CN109004990A - A kind of two-way controllable long-range preparation system of light quantum state - Google Patents
A kind of two-way controllable long-range preparation system of light quantum state Download PDFInfo
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Abstract
The present invention relates to Technique on Quantum Communication field, the two-way controllable long-range preparation system of specially a kind of light quantum state, including sending module, receiving module and control module.Under control module control, protocol requirement sending module transmits light particle quantum state toward receiving module, sending module is also used as receiving module to receive the light particle quantum state that other side transmits simultaneously, forms a kind of two-way controllable long-range preparation system of any light quantum state in the case where non-maximum tangles channel based on linear optical element.Since the quantum information of this system is transmitted in both directions, therefore the more efficient of light quantum state is remotely prepared, to improve the efficiency of quantum remote state preparation, simultaneously whole system only use linear optical element can be realized any single-photon state bidirectional remote preparation, therefore have many advantages, such as structure it is simple, it is easy to operate, can be in large-scale application.
Description
Technical field
The present invention relates to Technique on Quantum Communication field, the two-way controllable long-range preparation system of specially a kind of light quantum state.
Background technique
Quantum communications carry out information transmission and processing by information carrier of quantum state, are ensured with fundamental principles of quantum mechanics
The safety of communication tangles particle non-localized correlation principle according to based on shared in advance, and quantum number defect can be completed arbitrarily
Quantum state is transmitted from object.Since light quantum state has many advantages, such as that transmission speed is fast, propagation distance is remote, light quantum state is remote
The desirable information carrier of journey quantum communications.
From the point of view of current quantum information transmission mode, most quantum remote state preparation technical solutions are all one-way transmissions
The shortcomings that i.e. quantum information is transferred to recipient by sender, this mode is exactly that efficiency is more low, and can only use at present
The reason of one-way transmission is to be difficult to find that quantum entanglement channel appropriate and corresponding linear optical element how is arranged
At the monochromatic light sub-operation in the two-way controllable long-range preparation of light quantum state, so resulting in the existing light based on linear optical element
It is to tangle channel based on non-maximum using multi-photon maximal entangled state as quantum entanglement channel that quantum state, which controllably remotely prepares agreement all,
The two-way controllable long-range preparation agreement of light quantum state it is few, therefore cannot achieve non-maximum in existing quantum manipulation technology and entangle
It twines the light quantum state under channel and remotely prepares required multi-photon manipulation.And in current quantum communications sphere of learning, about light
The research of quantum computing method is also very much, such as " light quantum calculates and its algorithm by China Science & Technology University Ph.D. Dissertation
Realize ", author: Cai Xindong, the time: in May, 2015, usually this kind of research are all the detailed algorithms of only light quantum, but without tool
The preparation system of body realizes the transmitted in both directions of light quantum, therefore needs a kind of novel light quantum state system in the communications industry at present
Realize the two-way controllable remote transmission of light quantum, for system to improve quantum remote state preparation efficiency.
Summary of the invention
For above-mentioned problem, a kind of two-way controllable long-range preparation system of light quantum state of the present invention is set by scientific and reasonable
The linear optical element set in optical path constitutes sending module, receiving module and control module.It is controlled by control module, agreement is wanted
Sender is asked to transmit particle quantum state toward recipient, while sender is also used as recipient to receive the particle weight that other side transmits
Sub- state forms a kind of two-way controllable long-range preparation of any light quantum state in the case where non-maximum tangles channel based on linear optical element
System.Since quantum information is duplex simultaneous transmission in the present system, the more efficient of light quantum state is prepared, thus significantly
The efficiency for improving quantum remote state preparation, efficiently solves the above problem.
The technical solution adopted by the present invention is that:
The two-way controllable long-range preparation system of a kind of light quantum state, it is characterised in that: including the first Quantum Entangled States modulation module, the
Two Quantum Entangled States modulation modules and third Quantum Entangled States modulation module, the first of the first Quantum Entangled States modulation module
Signal output end, second signal output end are defeated with the first signal input part of the first quantum measurement module, second signal respectively
Entering end connection, the first quantum measurement module by signal output end is connect with the first signal input part of first phase turnover door,
First signal output end of the second Quantum Entangled States modulation module, second signal output end respectively with the second quantum measurement
First signal input part of module, the connection of second signal input terminal, the second quantum measurement module by signal output end and the
The second signal input terminal of two phase turnover door connects, the first signal output end of the third Quantum Entangled States modulation module,
Second signal output end is connect with the first signal input part of third quantum measurement module, second signal input terminal respectively, institute
It states third quantum measurement module by signal output end to connect with first phase turnover door second signal input terminal all the way, the third
The another way of quantum measurement module by signal output end is connect with the third signal input part of second phase turnover door, and described first
Phase turnover door signal output end with the first signal receiving device signal input part for connecting, the second phase turnover door letter
Number output end with second signal reception device signal input part for connecting；
The first Quantum Entangled States modulation module signal input part, the first signal input part of second phase turnover door, third
Quantum Entangled States modulation module signal input part, the third signal input part of first phase turnover door, the second Quantum Entangled States tune
Molding block signal input terminal is orderly used to be connect with the first to the 5th signal output end.
First Quantum Entangled States modulation module, the second Quantum Entangled States modulation module and third Quantum Entangled States modulation module
It is responsible for modulation photon Entangled State, quantum measurement module executes the measurement of X base to modulated photon or Z base measures.External signal
Source provides five photon entanglement states, and photon 1 is the first transmission photon, and photon 2 is the first reception photon, and photon 3 is control particle, use
In control quantum state output, photon 4 second receives particle, and photon 5 is the second transmission particle.Photon 1 is through the first Quantum Entangled States
Modulation module modulation, the first quantum measurement module execute and X base measurement result are transmitted to first phase overturning after X base measures
Door, photon 5 is modulated through the second Quantum Entangled States modulation module, the second quantum measurement module measures X base after executing the measurement of X base
As a result it is transmitted to second phase turnover door, photon 3 is through the modulation of third Quantum Entangled States modulation module, third quantum measurement module
It executes and X base measurement result is transmitted separately to first phase turnover door and second phase turnover door after X base measures, photon 2 is collapsed
To state corresponding with the second phase turnover door received X base measurement result of institute, photon 4 is collapsed to and first phase turnover door
The corresponding state of the received X base measurement result of institute, the second last phase turnover door according to received X base measurement result with
The corresponding relationship selection of 2 state of photon executes corresponding local to photon 2 and is just operating, i.e., sends particle photon 5 for second
State assigns first and receives particle photon 2；First phase turnover door is according to received X base measurement result and 4 state of photon
Corresponding relationship selection corresponding local executed to photon 4 just operating, i.e., assign for the state that first sends particle photon 1
Two receive particle photon 4, thus the quantum state preparation of any two transmitted in both directions photon needed for completing.
Further, the first quantum measurement module, the second quantum measurement module and third quantum measurement module are equal
Identical, the quantum measurement module includes that a Hadamard door H and two identical quantum measure operating device, described two
Identical quantum measurement operating device distinguishes the first quantum measurement operating device, the second quantum measures operating device, Ah the reaching
Horse door H signal output end is connect with first quantum measurement operating device signal input part.
The the first quantum measurement operating device connecting with Hadamard door is for executing the measurement of photon X base, the measurement of the second quantum
Operating device is for executing the measurement of light particle Z base, therefore the first quantum measurement module executes the measurement of X base and Z base to light particle 1
Measurement, and X base measurement result is transmitted to by first phase turnover door by classical channel, the second quantum measurement module is to light bead
Son 5 executes the measurement of X base and the measurement of Z base, and X base measurement result is transmitted to second phase turnover door, third by classical channel
Quantum measurement module executes the measurement of X base to light particle 3 and Z base measures, and is passed X base measurement result respectively by classical channel
Transport to first phase turnover door, second phase turnover door.
Further, the first Quantum Entangled States modulation module includes the polarization point of the first polarization beam splitter PBS1 and second
Beam device PBS2 and the two are horizontally disposed, the first signal output end of the first polarization beam splitter PBS1 and the second polarization beam splitting
The first signal input part of device PBS2 connects and composes optical path a0, in the optical path a0On be provided with the first slide, described
The second signal output end of one polarization beam splitter PBS1 and the second signal input terminal of the second polarization beam splitter PBS2 connect and compose
Optical path a1, the first polarization beam splitter PBS1 signal input part connect with the first signal output end, the second polarization beam splitting
The first signal output end of device PBS2 and the Hadamard door H signal input terminal of the first quantum measurement module connect and compose optical path a0',
The Hadamard door H signal output end of the first quantum measurement module and the first quantum of the first quantum measurement module measure
The connection of operating device G1 signal input part, the first quantum measurement operating device G1 signal output end and first phase turnover door
Zt1’The connection of first signal input part, the second polarization beam splitter PBS2 second signal output end and the first quantum measurement mould
The second quantum measurement operating device G1 ' signal input part of block connects and composes optical path a1’。
Further, the second Quantum Entangled States modulation module includes the polarization point of third polarization beam splitter PBS3 and the 4th
Beam device PBS4 and the two are horizontally disposed, the first signal output end of the third polarization beam splitter PBS3 and the 4th polarization beam splitter
The first signal input part of PBS4 connects and composes optical path b0, in the optical path b0On be provided with the second slide, the third pole
Change beam splitter PBS3 second signal output end and the 4th polarization beam splitter PBS4 second signal input terminal connects and composes optical path b1, institute
It states third polarization beam splitter PBS3 signal input part to connect with the 5th signal output end, the 4th polarization beam splitter PBS4 first
Signal output end and the Hadamard door H signal input terminal of the second quantum measurement module connect and compose optical path b0', second amount
The Hadamard door H signal output end of sub- state measurement module and the first quantum of the second quantum measurement module measure operating device G2
Signal input part connection, the first quantum measurement operating device G2 signal output end and second phase turnover door Zt2’Second
Signal input part connection, the quantum of the 4th polarization beam splitter PBS4 second signal output end and the second quantum measurement module
Measure the connection of operating device G2 ' signal input part.
Further, the third Quantum Entangled States modulation module includes the 5th polarization beam splitter PBS5 and sextupoleization point
Beam device PBS6 and the two are horizontally disposed, the first signal output end of the 5th polarization beam splitter PBS5 and the 6th polarization beam splitter
The first signal input part of PBS6 connects and composes optical path c0, the 5th polarization beam splitter PBS5 second signal output end and sextupole
Change beam splitter PBS6 second signal input terminal and connects and composes optical path c1, in the optical path c1On be provided with third slide, institute
It states the 5th polarization beam splitter PBS5 signal input part to connect with third signal output end, the 6th polarization beam splitter PBS6 first
Signal output end and the Hadamard door H signal input terminal of third quantum measurement module connect and compose optical path c0', the third amount
The Hadamard door H signal output end of sub- state measurement module and the first quantum of third quantum measurement module measure operating device G3
Signal input part connection, first quantum measurement operating device G3 signal output end all the way with first phase turnover door Zt1’'s
The connection of second signal input terminal, the first quantum measurement operating device G3 signal output end another way and second phase turnover door
Zt2’The connection of third signal input part, the 6th polarization beam splitter PBS6 second signal output end and third quantum measurement
The second quantum measurement operating device G3 ' signal input part of module connects and composes optical path c1’。
The first polarization beam splitter PBS1, which is split 1 Entangled State of photon and passes through, to be arranged in optical path a0The first glass
PieceBy optical path a0Photon polarized stateRotationAngle, the third polarization beam splitter PBS3 is to 5 Entangled State of photon
It is split and passes through and be arranged in optical path b0The second slideBy optical path b0Photon polarized stateRotationAngle,
The 5th polarization beam splitter PBS5, which is split 3 Entangled State of light particle and passes through, to be arranged in optical path c1Third slideBy optical path c1Photon polarized stateRotationAngle executes rotation behaviour to light particle 1, light particle 5, light particle 3
After work, five photon entanglement states are converted into corresponding state；The photon 1 forms optical path after the second polarization beam splitter PBS2
a0' and optical path a1', the photon 5 forms optical path b through the 4th polarization beam splitter PBS40' and optical path b1', the photon 3 is through the 6th
Polarization beam splitter PBS6 forms optical path c0' and optical path c1', if photon 1, photon 5, photon 3 be not in optical path a0’、b0’、c0' on, then
Five photon entanglement statesIt is converted into corresponding stateIf photon 1, photon 5, photon 3 are in optical path a0’、b0’、c0' in,
Then five photon entanglement stateIt is converted into corresponding state, following first quantum measurement module is to the execution X base of photon 1
It measures and measurement result t1 is passed through into classical transmission to first phase turnover door Zt1’, the second quantum measurement module is to light
Son 5 executes the measurement of X base and measurement result t2 is passed through classical transmission to second phase turnover door Zt2’, the survey of third quantum state
Amount module executes the measurement of X base to photon 3 and measurement result t3 is transmitted separately to first phase turnover door Z by classical channelt1’
With second phase turnover door Zt2’.After having executed the measurement of X base, first phase turnover door Zt1’Receive measurement result t1 and measurement knot
Fruit t3, then 4 Entangled State of photon is through first phase turnover door Zt1’After be collapsed into shape corresponding with X base measurement result (t1+t3)
State is usedIt indicates, second phase turnover door Zt2’Measurement result t2 and measurement result t3 are received, then 2 Entangled State of photon
Through second phase turnover door Zt2’After be collapsed into state corresponding with X base measurement result (t2+t3), useIt indicates, last first
Phase turnover door Zt1’According to X base measurement result (t1+t3) and 4 state of photonCorresponding relationship, photon 4 is executed accordingly
Local just operate, while second phase turnover door Zt2’According to X base measurement result (t2+t3) and 2 state of photonPair
It should be related to, corresponding local is executed to photon 2 and is just being operated, institute is made after completing the local just operation of photon 2 and photon 4
The photonic quantum state needed.
Further, the route of the connection includes wireless transmission connection line and connection line of optic fibre road；When the two of connection
Transmission range between a optical element uses connection line of optic fibre road when being more than or equal to 1km；When connection two optical elements it
Between transmission range be less than 1km when using wireless transmission connection line.
In conclusion by adopting the above-described technical solution, beneficial effects of the present invention:
A kind of two-way controllable long-range preparation system of light quantum state of the present invention, passes through the linear optics member in scientific and reasonable setting optical path
Part constitutes sending module, receiving module and control module.Under control module control, by executing corresponding monochromatic light sub-operation,
Sending module transmits light particle quantum state toward receiving module as sender, while sending module itself is also received as recipient
The light particle quantum state that other side transmits, and receiving module is also used as other than receiving the light particle that other side transmits and sends
Direction other side send light particle quantum state, thus formed it is a kind of in the case where non-maximum tangles channel based on any of linear optical element
The two-way controllable long-range preparation system of light quantum state, realizes the bidirectional remote transmission of light quantum state, with existing one-way transmission skill
Art is compared, and the present invention has many advantages, such as that the long-range light quantum state for preparing is more efficient, effectively increases quantum remote state preparation efficiency, together
When this system be made of common linear optical element, therefore have many advantages, such as that structure is simple, easy to operate, feasibility is strong, can be big
Scale promotes and applies.
Detailed description of the invention
In order to illustrate more clearly of example or technical solution in the prior art of the invention, below will to embodiment or
Required attached drawing, which is done, in description of the prior art simply introduces, it is clear that the accompanying drawings in the following description is only of the invention one
A little examples under the premise of not paying creativeness, can also obtain according to these attached drawings to those skilled in the art
Obtain other attached drawings.
A kind of two-way controllable long-range preparation system structural block diagram of light quantum state of Fig. 1；
A kind of two-way controllable long-range preparation system structure chart of light quantum state of Fig. 2；
Fig. 3 the first Quantum Entangled States modulation module structure chart；
Fig. 4 the second Quantum Entangled States modulation module structure chart；
Fig. 5 third Quantum Entangled States modulation module structure chart；
Fig. 6 quantum measurement function structure chart.
Specific embodiment
Below in conjunction with the attached drawing in present example, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Embodiment:
As shown in Figure 1, a kind of two-way controllable long-range preparation system of light quantum state, including the first Quantum Entangled States modulation module, the
Two Quantum Entangled States modulation modules and third Quantum Entangled States modulation module, the first of the first Quantum Entangled States modulation module
Signal output end, second signal output end are defeated with the first signal input part of the first quantum measurement module, second signal respectively
Entering end connection, the first quantum measurement module by signal output end is connect with the first signal input part of first phase turnover door,
First signal output end of the second Quantum Entangled States modulation module, second signal output end respectively with the second quantum measurement
First signal input part of module, the connection of second signal input terminal, the second quantum measurement module by signal output end and the
The second signal input terminal of two phase turnover door connects, the first signal output end of the third Quantum Entangled States modulation module,
Second signal output end is connect with the first signal input part of third quantum measurement module, second signal input terminal respectively, institute
It states third quantum measurement module by signal output end to connect with first phase turnover door second signal input terminal all the way, the third
The another way of quantum measurement module by signal output end is connect with the third signal input part of second phase turnover door, and described first
Phase turnover door signal output end is connect with the first signal receiving device signal input part, and the second phase overturning gate signal is defeated
Outlet is connect with second signal reception device signal input part, the first Quantum Entangled States modulation module signal input part,
The first signal input part, the third Quantum Entangled States modulation module signal input part, first phase turnover door of two phase turnover door
Third signal input part, the second Quantum Entangled States modulation module signal input part successively with outside source first to the 5th
Signal output end connection；
As shown in fig. 6, the first quantum measurement module, the second quantum measurement module and third quantum measurement module are equal
Identical, the quantum measurement module includes that a Hadamard door H and two identical quantum measure operating device, described two
Identical quantum measurement operating device distinguishes the first quantum measurement operating device, the second quantum measures operating device, Ah the reaching
Horse door H signal output end is connect with first quantum measurement operating device signal input part；
As shown in Figures 2 and 3, the first Quantum Entangled States modulation module includes the polarization of the first polarization beam splitter PBS1 and second
Beam splitter PBS2 and the two are horizontally disposed, the first signal output end of the first polarization beam splitter PBS1 and the second polarization point
The first signal input part of beam device PBS2 connects and composes optical path a0, in the optical path a0On be provided with the first slide, described
The second signal output end of first polarization beam splitter PBS1 connect structure with the second signal input terminal of the second polarization beam splitter PBS2
At optical path a1, the first polarization beam splitter PBS1 signal input part connect with the first signal output end of signal source, and described second
The first signal output end of polarization beam splitter PBS2 and the Hadamard door H signal input terminal of the first quantum measurement module connect and compose
Optical path a0', the first of the Hadamard door H signal output end of the first quantum measurement module and the first quantum measurement module
Quantum measures the connection of operating device G1 signal input part, the first quantum measurement operating device G1 signal output end and the first phase
Bit flipping door Zt1’The connection of first signal input part, the second polarization beam splitter PBS2 second signal output end and the first quantum
The second quantum measurement operating device G1 ' signal input part of state measurement module connects and composes optical path a1'；
As shown in Figure 2 and Figure 4, the second Quantum Entangled States modulation module includes the polarization of third polarization beam splitter PBS3 and the 4th
Beam splitter PBS4 and the two are horizontally disposed, the first signal output end of the third polarization beam splitter PBS3 and the 4th polarization beam splitting
The first signal input part of device PBS4 connects and composes optical path b0, in the optical path b0On be provided with the second slide, the third
Polarization beam splitter PBS3 second signal output end and the 4th polarization beam splitter PBS4 second signal input terminal connect and compose optical path b1,
The third polarization beam splitter PBS3 signal input part is connect with the 5th signal output end of signal source, the 4th polarization beam splitter
The first signal output end of PBS4 and the Hadamard door H signal input terminal of the second quantum measurement module connect and compose optical path b0', institute
The first quantum measurement of the Hadamard door H signal output end and the second quantum measurement module of stating the second quantum measurement module is grasped
Make the connection of device G2 signal input part, the first quantum measurement operating device G2 signal output end and second phase turnover door
Zt2’The connection of second signal input terminal, the 4th polarization beam splitter PBS4 second signal output end and the second quantum measurement
The second quantum measurement operating device G2 ' signal input part connection of module；
As shown in Figure 2 and Figure 5, the third Quantum Entangled States modulation module includes the 5th polarization beam splitter PBS5 and sextupole
Beam splitter PBS6 and the two are horizontally disposed, the first signal output end of the 5th polarization beam splitter PBS5 and sextupole beam splitting
The first signal input part of device PBS6 connects and composes optical path c0, the 5th polarization beam splitter PBS5 second signal output end and the 6th
Polarization beam splitter PBS6 second signal input terminal connects and composes optical path c1, in the optical path c1On be provided with third slide,
The 5th polarization beam splitter PBS5 signal input part is connect with signal source third signal output end, the 6th polarization beam splitter
The first signal output end of PBS6 and the Hadamard door H signal input terminal of third quantum measurement module connect and compose optical path c0', institute
The first quantum measurement of the Hadamard door H signal output end and third quantum measurement module of stating third quantum measurement module is grasped
Make the connection of device G3 signal input part, the first quantum measurement operating device G3 signal output end is overturn with first phase all the way
Door Zt1’The connection of second signal input terminal, first quantum measurement operating device G3 signal output end another way and the second phase
Bit flipping door Zt2’The connection of third signal input part, the 6th polarization beam splitter PBS6 second signal output end and third amount
The second quantum measurement operating device G3 ' signal input part of sub- state measurement module connects and composes optical path c1'；
The route of the connection includes wireless transmission connection line and connection line of optic fibre road, when between two optical elements of connection
Transmission range be more than or equal to 1km when use connection line of optic fibre road, when the transmission range between two optical elements of connection is small
Using wireless transmission connection line when 1km.
In the present embodiment, the first signal receiving device and second signal reception device are quantum state memory.The present invention
The course of work it is as follows:
Step 1: the known any 2 photons bit state for needing achievable transmitted in both directions to be prepared isWith
, described、, whereinPhoton level polarization state is represented,It represents
Photon perpendicular polarisation state, plural number、、、Meet Normalized Relation:、；
Step 2: signal source provides 5 photon entanglement states
, wherein
, ,, 5 photons point
It Wei not the first transmission reception of photon 1, first photon 2, control photon 3, second reception photon 4 and the second transmission photon 5；
Step 3: the first polarization beam splitter PBS1 sends 1 beam splitting of photon to first, and by being arranged in optical path a0
The first slideBy optical path a0Photon polarized stateRotationAngle:
, wherein、；
Step 4: third polarization beam splitter PBS3 sends 5 beam splitting of photon to second, and by being arranged in optical path b0The second slide
SlideTo optical path b0Photon polarized stateRotationAngle:
, wherein、；
Step 4: the 5th polarization beam splitter PBS5 to control 3 beam splitting of photon, and by be arranged in optical path c1Third slideTo optical path c1Photon polarized stateRotationAngle:
, wherein,；
Step 5: 5 photon entanglement states are converted into corresponding state after executing rotation process to photon 1, photon 3, photon 5,
,
Wherein a0、a1Represent two different light paths of the photon 1 after the first polarization beam splitter PBS1 beam splitting where photon, b0、b1
Represent two different light paths of the photon 5 after third polarization beam splitter PBS3 beam splitting where photon, c0、c1Represent the process of photon 3
Two articles of different light paths after 5th polarization beam splitter PBS5 beam splitting where photon；
Step 6: from 5 photon superposition statesIn isolate required for light quantum state, i.e., photon 1 is through the second polarization beam splitter
Through the 4th polarization beam splitter PBS4, photon 3 after the 6th polarization beam splitter PBS6,5 photon entanglement channels are converted for PBS2, photon 5
For corresponding state,
,
Wherein a0 ', a1 ' represent two different light paths of the photon 1 after the second polarization beam splitter PBS2 where photon, b0’、b1' generation
Two article different light paths of mass color 5 after the 4th polarization beam splitter PBS4 where photon, c0’、c1' photon 3 is represented by sextupole
Change two different light paths after beam splitter PBS6 where photon, in formulaPhoton 1, photon 5, photon 3 are represented not in optical path a0', light
Road b0', optical path c0' state, when photon 1, photon 5, photon 3 are respectively in optical path a0', optical path b0', optical path c0' when, then 5 photons entangle
It twines channel and is converted into corresponding states；
Step 7: when photon 1 is in optical path a0' when, the first quantum measurement module executes the measurement of X base to photon 1 and obtains measurement knot
Fruit t1, when photon 5 is in optical path b0' when, the second quantum measurement module executes the measurement of X base to photon 5 and obtains measurement result t2, when
Photon 3 is in optical path c0' when, third quantum measurement module executes the measurement of X base to photon 3 and obtains measurement result t3, and the X base is surveyed
Amount is、, t1=0 or 1, t2=0 or 1, t3=0 or 1, execution X base measure
Afterwards, 2 state of photon is collapsed to state corresponding with measurement result (t2+t3), is expressed as, in formula, 4 state of photon is collapsed to state corresponding with measurement result (t1+t3), is expressed as,
In formula, photon 2 and photon 4 be in corresponding states:；
Step 8: first phase turnover door is according to measurement result (t1+t3) and 4 state of photonCorresponding relationship select to light
Son 4 executes corresponding local and just operates, by the state of photon 4The light quantum state prepared needed for being converted to, whereinFor Pauli operation, second phase turnover door is according to measurement result (t2+t3) and photon
2 statesCorresponding relationship selection to photon 2 execute corresponding local just operate, by 2 state of photonIt is converted to
The light quantum state of required preparation, whereinFor Pauli operation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of two-way controllable long-range preparation system of light quantum state, it is characterised in that: including the first Quantum Entangled States modulation module,
Second Quantum Entangled States modulation module and third Quantum Entangled States modulation module, the of the first Quantum Entangled States modulation module
One signal output end, second signal output end respectively with the first signal input part of the first quantum measurement module, second signal
Input terminal connection, the first quantum measurement module by signal output end and the first signal input part of first phase turnover door connect
Connect, the first signal output end of the second Quantum Entangled States modulation module, second signal output end respectively with the second quantum state
First signal input part of measurement module, the connection of second signal input terminal, the second quantum measurement module by signal output end
It is connect with the second signal input terminal of second phase turnover door, the first signal output of the third Quantum Entangled States modulation module
End, second signal output end are connect with the first signal input part of third quantum measurement module, second signal input terminal respectively,
The third quantum measurement module by signal output end is connect with first phase turnover door second signal input terminal all the way, and described
The another way of three quantum measurement module by signal output ends is connect with the third signal input part of second phase turnover door, and described
One phase turnover door signal output end with the first signal receiving device signal input part for connecting, the second phase turnover door
Signal output end with second signal reception device signal input part for connecting；
The first Quantum Entangled States modulation module signal input part, the first signal input part of second phase turnover door, third
Quantum Entangled States modulation module signal input part, the third signal input part of first phase turnover door, the second Quantum Entangled States tune
Molding block signal input terminal is orderly used to be connect with the first to the 5th signal output end.
2. a kind of two-way controllable long-range preparation system of light quantum state according to claim 1, it is characterised in that: described first
Quantum measurement module, the second quantum measurement module and third quantum measurement module are all the same, the quantum measurement mould
Block includes a Hadamard door H and two identical quantum measure operating device, described two identical quantum measurement operation dresses
Set respectively the first quantum measurement operating device, the second quantum measurement operating device, the Hadamard door H signal output end with it is described
First quantum measurement operating device signal input part connection.
3. a kind of two-way controllable long-range preparation system of light quantum state according to claim 1, it is characterised in that: described first
Quantum Entangled States modulation module include the first polarization beam splitter PBS1 and the second polarization beam splitter PBS2 and the two be it is horizontally disposed,
The first signal output end of the first polarization beam splitter PBS1 and the first signal input part of the second polarization beam splitter PBS2 connect
It connects and constitutes optical path a0, in the optical path a0On be provided with the first slide, the second letter of the first polarization beam splitter PBS1
The second signal input terminal of number output end and the second polarization beam splitter PBS2 connect and compose optical path a1, first polarization beam splitter
PBS1 signal input part is connect with the first signal output end, the first signal output end of the second polarization beam splitter PBS2 and first
The Hadamard door H signal input terminal of quantum measurement module connects and composes optical path a0', the first quantum measurement module Ah
Da Mamen H signal output end is connect with the first quantum of the first quantum measurement module measurement operating device G1 signal input part,
The first quantum measurement operating device G1 signal output end and first phase turnover door Zt1’The connection of first signal input part, institute
State the second quantum measurement operating device of the second polarization beam splitter PBS2 second signal output end and the first quantum measurement module
G1 ' signal input part connects and composes optical path a1’。
4. a kind of two-way controllable long-range preparation system of light quantum state according to claim 1, it is characterised in that: described second
Quantum Entangled States modulation module include third polarization beam splitter PBS3 and the 4th polarization beam splitter PBS4 and the two be it is horizontally disposed,
The first signal output end of the third polarization beam splitter PBS3 connect structure with the 4th the first signal input part of polarization beam splitter PBS4
At optical path b0, in the optical path b0On be provided with the second slide, the third polarization beam splitter PBS3 second signal output
End connects and composes optical path b with the 4th polarization beam splitter PBS4 second signal input terminal1, the third polarization beam splitter PBS3 signal
Input terminal is connect with the 5th signal output end, and the first signal output end of the 4th polarization beam splitter PBS4 and the second quantum state are surveyed
The Hadamard door H signal input terminal of amount module connects and composes optical path b0', the Hadamard door H of the second quantum measurement module
Signal output end is connect with the first quantum of the second quantum measurement module measurement operating device G2 signal input part, and described first
Quantum measures operating device G2 signal output end and second phase turnover door Zt2’Second signal input terminal connection, the described 4th
Polarization beam splitter PBS4 second signal output end and the second quantum of the second quantum measurement module measure operating device G2 ' signal
Input terminal connection.
5. a kind of two-way controllable long-range preparation system of light quantum state according to claim 1, it is characterised in that: the third
Quantum Entangled States modulation module include the 5th polarization beam splitter PBS5 and the 6th polarization beam splitter PBS6 and the two be it is horizontally disposed,
The first signal output end of the 5th polarization beam splitter PBS5 connect structure with the 6th the first signal input part of polarization beam splitter PBS6
At optical path c0, the 5th polarization beam splitter PBS5 second signal output end and the 6th polarization beam splitter PBS6 second signal input
End connects and composes optical path c1, in the optical path c1On be provided with third slide, the 5th polarization beam splitter PBS5 signal
Input terminal is connect with third signal output end, and the first signal output end of the 6th polarization beam splitter PBS6 and third quantum state are surveyed
The Hadamard door H signal input terminal of amount module connects and composes optical path c0', the Hadamard door H of the third quantum measurement module
Signal output end is connect with the first quantum of third quantum measurement module measurement operating device G3 signal input part, and described first
Quantum measure operating device G3 signal output end all the way with first phase turnover door Zt1’Second signal input terminal connection, it is described
First quantum measures operating device G3 signal output end another way and second phase turnover door Zt2’Third signal input part connect
It connects, the second quantum of the 6th polarization beam splitter PBS6 second signal output end and third quantum measurement module, which measures, to be operated
Device G3 ' signal input part connects and composes optical path c1’。
6. a kind of two-way controllable long-range preparation system of light quantum state described in -5 any one, feature exist according to claim 1
In: the route of the connection includes wireless transmission connection line and connection line of optic fibre road；When between two optical elements of connection
Transmission range be more than or equal to 1km when use connection line of optic fibre road；When the transmission range between two optical elements of connection is small
Using wireless transmission connection line when 1km.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555821A (en) * | 2020-04-27 | 2020-08-18 | 太原师范学院 | Flexible and controllable multi-component quantum ion matter transport network system and construction method thereof |
| CN113746566A (en) * | 2021-07-29 | 2021-12-03 | 暨南大学 | Entanglement concentration method of 5-particle quantum linear entanglement state based on linear optical device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490751A (en) * | 2015-11-24 | 2016-04-13 | 广西民族大学 | Remote combined preparation method for any two-photon state based on linear optical element |
| CN107346086A (en) * | 2017-07-27 | 2017-11-14 | 山西大学 | The generation device of continuous variable quantum entanglement between quantum channel and quantum nodes |
| CN209184601U (en) * | 2018-10-23 | 2019-07-30 | 广西民族大学 | The two-way controllable long-range preparation system of light quantum state |
-
2018
- 2018-10-23 CN CN201811233825.2A patent/CN109004990A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490751A (en) * | 2015-11-24 | 2016-04-13 | 广西民族大学 | Remote combined preparation method for any two-photon state based on linear optical element |
| CN107346086A (en) * | 2017-07-27 | 2017-11-14 | 山西大学 | The generation device of continuous variable quantum entanglement between quantum channel and quantum nodes |
| CN209184601U (en) * | 2018-10-23 | 2019-07-30 | 广西民族大学 | The two-way controllable long-range preparation system of light quantum state |
Non-Patent Citations (2)
| Title |
|---|
| PING ZHOU等: ""Linear-Optics-Based Bidirectional Controlled Remote State Preparation via Five-Photon Cluster-Type States for Quantum Communication Network"", 《INTERNATIONAL JOUNRAL OF THEORETICAL PHYSICS》, pages 2 - 3 * |
| 郑晓毅: "基于五粒子Cluster态的受控双向量子隐形传态", 量子电子学报, no. 02 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555821A (en) * | 2020-04-27 | 2020-08-18 | 太原师范学院 | Flexible and controllable multi-component quantum ion matter transport network system and construction method thereof |
| CN111555821B (en) * | 2020-04-27 | 2023-04-21 | 太原师范学院 | Flexibly controllable multi-component ion object-transfer network system and construction method thereof |
| CN113746566A (en) * | 2021-07-29 | 2021-12-03 | 暨南大学 | Entanglement concentration method of 5-particle quantum linear entanglement state based on linear optical device |
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