CN108415064A - A kind of polar system of diamond colour center nucleon - Google Patents
A kind of polar system of diamond colour center nucleon Download PDFInfo
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- CN108415064A CN108415064A CN201810075893.4A CN201810075893A CN108415064A CN 108415064 A CN108415064 A CN 108415064A CN 201810075893 A CN201810075893 A CN 201810075893A CN 108415064 A CN108415064 A CN 108415064A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/32—Measuring polarisation of particles
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Abstract
The invention discloses a kind of polar system of diamond colour center nucleon, which includes optical control system, microwave control system, magnetic field control system, control and data collecting system.Wherein, optical control system, microwave control system and magnetic field control system are mutual indepedent, are connected to data collecting system and related component by control, form diamond colour center nuclear polarisation system.The method for acting on diamond by design sequential by laser, microwave, magnetic field, radio frequency multiple physical field, it is highly sensitive, rapidly weaken diamond colour center and around it nucleon interaction, nucleon high polarization efficiency can be achieved, it improves quantum and measures and use the decoherence time, support is provided for technologies such as quantum calculation, quantum sensing, Quantum Teleportations based on diamond colour center.
Description
Technical field
The present invention relates to quantum calculation, quantum Technology of Precision Measurement fields, and in particular to a kind of diamond colour center nucleon
Polar system.
Background technology
Diamond colour center nuclear polarisation is the basis that quantum accurate measurement is carried out using diamond colour center.High concentration diamond
In material, diamond colour center with it is a large amount of13C atoms and NV0、P1There is mixed and disorderly coupling phenomenon etc. a variety of colour centers.Existing Buddha's warrior attendant
Stone heart nuclear spin polarization system mainly has through colour center excited level anti-cross (ESLAC) under 500 Gauss high-intensity magnetic field states
Polar system, the double resonance polar system manipulated by microwave radio resonance field and bias magnetic field.ESLAC polar system volumes
Greatly, of high cost, double resonance system nuclear polarisation rate is low.
Invention content
According to one embodiment of present invention, a kind of polar system of diamond colour center nucleon is provided, which includes：
Diamond sample, optical control system, microwave control system, magnetic field control system, control and data collecting system.Wherein,
The diamond sample is processed by special process, is fixed on platform by fixing device；
The optical control system is set to using diamond sample as core before and after sample, and the laser modulated is imported
The fluorescence signal generated after sample and collection and sample effect；
The microwave control system is set to sample both sides using diamond sample as core, and the microwave modulated is believed
Number import diamond sample, microwave control system and optical control system are mutual indepedent, are independent of each other each other；
The magnetic field control system by diamond sample be included in its device in central area, optical control system with it is micro-
Wave control system part of devices is contained in the control system of magnetic field；
The control is connect with data collecting system with above-mentioned optical control system and microwave control system, unified
Regulate and control the running between above system and exports data result.
Wherein, optical control system includes：(1) diamond colour center electronic polarization light path system, the main group of the light path system
It is lasing light emitter, beam modulation device and respective optical component at part, wherein each component part is connected by space optical path
It connects, beam modulation device is connect with the control with data collecting system, which is to complete diamond
Colour center electronics quantum state polarizes；(2) diamond colour center coherent layout imprison nuclear spin decouples light path system, and the light path system is main
Component part is lasing light emitter, beam modulation device and respective optical component, wherein each component part is connected by space optical path
It connects, beam modulation device is connect with the control with data collecting system, which is that generation is accurate right
Quasi- diamond colour center hyperfine levels transition realizes that the decoupling of colour center and surrounding nucleon is completed in Coherent Population Trapping imprison；(3) fluorescence is received
Collect light path system, which is detector, light path regulator and related component, wherein
Each component part is connected by space optical path, and detector is connect with the control with data collecting system, the light path system
Main function is to carry out the detection of photon sideband phosphor collection and zero-phonon line detection, tracking observation Buddha's warrior attendant to diamond colour center fluorescence
The situation of stone heart nuclear spin polarization.
Wherein, microwave control system includes：Microwave source, switch, amplifier, transmission antenna and load, microwave source and are opened
Pass is connect with the control with data collecting system, and the system is for generating control diamond colour center electronics in ground state quantum state
Between the microwave pulse sequence that overturns.
Wherein, magnetic field control system includes：Power supply and field generator for magnetic, the system generate accurate electricity by regulating and controlling power supply
Flow control field generator for magnetic, and then generate the stable magnetic field for making diamond colour center electronics generate Zeeman splitting.
Wherein, it is anti-that the above-mentioned three kinds of control systems progress joint debugging of ordered pair, system when including design are controlled with data collecting system
Feedback regulation and control and data acquisition process.
The advantages of the present invention over the prior art are that：
By laser, microwave, magnetic field multiple physical field diamond sample is acted on by design sequential, it is highly sensitive, rapidly subtract
Weak diamond colour center and around it nucleon interaction, in conjunction with Coherent Population Trapping imprison Polarization technique pass through imprison colour center quantum state
I on population, reduce diamond colour center homogeneously broadening, while reducing diamond colour center14The coupling of N nuclear spins assemblage and cluttered environment
It closes, hyperfine energy level is made to be more clear, by the accurate manipulation to hyperfine energy level, realize14N nuclear spin assemblages polarize.This is
Reaction rate of uniting is fast, experimental situation is simple, robustness is good.The system both can provide the superfinishing for being easy to be aligned to stablize polarization state
Thin energy level high-precision, and the decoherence time of diamond colour center can be extended to a certain extent, for stabilization14N nuclear spin assemblages polarize
The Uncoupled procedure of state provides time guarantee.In the experiment for carrying out quantum accurate measurement using diamond colour center, it can effectively improve
Quantum, which measures, uses the decoherence time, to improve the sensitivity measured based on diamond colour center quantum.
Description of the drawings
Fig. 1 is a kind of basic structure signal of diamond colour center nuclear polarisation system provided by one embodiment of the present invention
Figure；
Fig. 2 is the diamond colour center electronic polarization light path system in optical control system provided by one embodiment of the present invention
Schematic diagram；
Fig. 3 is that the diamond colour center coherent layout in optical control system provided by one embodiment of the present invention imprisons core certainly
Rotation decoupling light path system schematic diagram；
Fig. 4 is the phosphor collection light path system signal in optical control system provided by one embodiment of the present invention
Figure；
Fig. 5 is microwave control system schematic diagram provided by one embodiment of the present invention；
Fig. 6 is a kind of polar system schematic diagram of diamond colour center nucleon provided by one embodiment of the present invention.
Specific implementation mode
To make the technical solution of the embodiment of the present invention and becoming apparent from for advantage expression, below by drawings and examples,
Technical scheme of the present invention will be described in further detail.
Fig. 1 is a kind of basic structure signal of diamond colour center nuclear polarisation system provided by one embodiment of the present invention
Figure, the system necessary technology core include：Diamond sample 101, optical control system 105, microwave control system 104, magnetic field
Control system 103, control and data collecting system 102.Wherein,
The diamond sample 101 is processed by special process, is fixed on platform by fixing device；
The optical control system 105 is set to using diamond sample as core before and after sample, and the laser modulated is led
The fluorescence signal for entering sample and being generated after collection and sample effect；
The microwave control system 104 is set to sample both sides using diamond sample as core, the microwave that will be modulated
Signal imports diamond sample, and microwave control system and optical control system are mutual indepedent, are independent of each other each other；
Diamond sample is included in central area in its device, optical control system by the magnetic field control system 103
It is contained in the control system of magnetic field with microwave control system part of devices；
The control is connect with data collecting system 102 with above-mentioned optical control system and microwave control system,
Unification regulates and controls the running between above system and exports data result.
Control is with data collecting system by designing timing control optical control system, microwave control system, magnetic field manipulation
Service system makes system operate as stated above, generate laser, microwave, magnetic field series of composite act on diamond-like
Product, highly sensitive, reaction speed weaken the interaction of diamond colour center and nucleon around it, realization nuclear polarisation soon.It carries
High quantum, which measures, uses the decoherence time, to improve the sensitivity measured based on diamond colour center quantum.
Its necessary technology core of optical control system includes diamond colour center polar system, diamond colour center coherent layout prisoner
Prohibit nuclear spin decoupling light path system and phosphor collection light path system.Optical control system is mainly characterized by：Complete gold
The polarization of hard rock colour center prepares, and the decoupling and fluorescence that colour center and nucleon are completed under the cooperation of microwave and magnetic field control system are believed
Number collection and detection.Next for the convenience of elaboration, the composition of each subsystem and effect will be explained.
Diamond colour center polar system chief component be lasing light emitter, beam modulation device and respective optical component,
Wherein, each component part is connected by space optical path, and beam modulation device is connect with control with data collecting system, the light path
System main function is to complete the polarization of diamond colour center electronics quantum state.Fig. 2 grasps for optics provided by one embodiment of the present invention
In control system diamond colour center polarization light path system schematic diagram, for example, by the laser that laser 201 generates pass sequentially through every
Light path characteristic is adjusted from device 202, first sound-optic modulator 203, the first dichroscope 204 and modulation wave plate 205, then passes through copolymerization
The convergence of focus objective lens 206 acts on diamond sample, and special amount is prepared into using the special level characteristic of diamond colour center
Sub- state, wherein first sound-optic modulator 203 is manipulated by controlling with data collecting system 102.Diamond colour center polarization light path system
Fluorescence is imported phosphor collection light path system by the fluorescent reflection that reflecting optics 207 release diamond sample 101.
As a kind of selection, it is sharp that diamond colour center coherent layout, which imprisons nuclear spin decoupling light path system chief component,
Light source, beam modulation device and respective optical component, wherein each component part is connected by space optical path, beam modulation
Device connect with control with data collecting system, and it is hyperfine which for generation precisely aligns diamond colour center
Energy level transition realizes that the decoupling of colour center and surrounding nucleon is completed in Coherent Population Trapping imprison.Fig. 3 is provided by one embodiment of the present invention
The diamond colour center coherent layout imprison nuclear spin of optical control decouples light path system schematic diagram.Using 2 tunable laser,
That is the second tunable laser 301, third tunable laser 305, the second tunable laser 301 pass through the second isolator
After 302, the frequency of second tunable laser 301 is strictly locked in pair with second sound-optic modulator 303 and frequency locker 304
It answers between two energy levels of colour center.The laser that third tunable laser 305 is sent out, after third isolator 306, using third sound
What is sent out with the second tunable laser 301 after optical modulator 307, first wave guide modulator 308, second waveguide modulator 309 swashs
Light gathers latter with 311 row of progress of the first detector is entered frequently in the first polarization splitting prism 310, then passes through feedback differential circuit
312 pairs of third tunable lasers 305 are accurately controlled into line frequency.The two beam laser modulated will pass through polarization splitting prism 402
Act on the decoupling that diamond sample 101 carries out colour center and nucleon.Wherein, second sound-optic modulator 303, third acousto-optic modulator
307, first wave guide modulator 308, second waveguide modulator 309 and the first detector 311 with control and data collecting system
102 are connected.
As a kind of selection, phosphor collection light path system chief component be detector, light path regulator and
Related component, wherein each component part is connected by space optical path, and detector is connect with control with data collecting system,
The light path system main function is to carry out the detection of photon sideband phosphor collection and zero-phonon line detection to diamond colour center fluorescence, with
Track observes the situation of diamond colour center nuclear spin polarization.Fig. 4 is that the fluorescence of optical control provided by one embodiment of the present invention is received
Collect light path system schematic.Fluorescence of the diamond sample 101 through return is filtered off polarization by the first dichroscope 204 to use
Laser, light beam is detached using the second dichroscope 401, the part fluorescence of reflection enter the second detector 406 into
Row sideband fluoroscopic examination；The fluorescence penetrated biases first reverses through the second Amici prism 402 using having modulation wave plate and third
The device for testing polarization 403 that Amici prism 403 forms carries out Polarization Detection, modulates and then enters by beam adjuster 404
Third detector 405 carries out zero-phonon line detection.Sideband fluorescent assay signal and zero-phonon line detection signal are filled by difference
It sets 407 and does difference processing, obtained differential signal input analyzer 408 carries out signal analysis, detection diamond colour center nucleon pole
Change situation.Wherein, analyzer 408 is connected with control with data collecting system 102.
As a kind of selection, its necessary component of microwave control system includes：Microwave source, switch, amplifier, transmission day
Line and load.Microwave source is connect with switch control with data collecting system.The system is for generating control diamond colour center electricity
The microwave pulse sequence that son is overturn between ground state quantum state realizes the quantum state manipulation between diamond colour center energy level splitting.Fig. 5 is
Microwave control method schematic diagram provided by one embodiment of the present invention；Behaviour of the microwave source 501 in control and data collecting system 102
Make lower generation microwave signal, then manipulates microwave switch 502 with data collecting system 102 by control and cut-off what interception microwave source was sent out
Microwave forms pulse train, and after amplifier 503, diamond sample 101, last microwave cut-off are acted on by microwave antenna
In load 504.Different microwave sequences can be formed to improve quantum state manipulation effect by designing timing control on off state.
As a kind of selection, diamond sample 101 is included in central area in its device, optics behaviour by magnetic field control system
Control system is contained in microwave control system part of devices in the control system of magnetic field.Magnetic field control system necessary component is magnetic
Field generating means and current source.Control method its necessary technology core in magnetic field includes the accurate manipulation of magnetic field size and Orientation.Its
It is mainly characterized by：Necessary magnetic field environment condition is provided for nuclear polarisation around diamond colour center.For example, as shown in fig. 6, selecting
Three axis hertz nurse hertz coil 103 accurately controls the size and Orientation in magnetic field by electric current.
As a kind of selection, its necessary technology core includes ordered pair above-mentioned three kinds of behaviour when designing with data collecting system for control
Control system carries out joint debugging, system feedback regulation and control and data acquisition process.It is mainly characterized by：It is above-mentioned to provide clock signal control
Laser, microwave and field system complete nuclear polarisation, and gathered data is simultaneously analyzed.For example, as shown in fig. 6, control is acquired with data
System 102 generates the first sound-optic modulator 202 in design timing control diamond colour center polar system；Diamond colour center is relevant
Second sound-optic modulator, third acousto-optic modulator, first wave guide modulator in layout imprison nuclear spin decoupling light path system
308, second waveguide modulator 309；Microwave source 501, microwave switch 502 in microwave control system；And collect the first detector
311, the second detector 406, third detector 405 signal data analyzed.
Fig. 6 is a kind of polar system schematic diagram of diamond colour center nucleon provided by one embodiment of the present invention.The polarization
System includes Fig. 2-5 systems, magnetic field control system.Wherein, optics, microwave and magnetic field control system are mutual indepedent, pass through
Control is connected to data collecting system and related component, forms diamond colour center nuclear polarisation system.By laser, microwave,
Magnetic field multiple physical field acts on diamond by design sequential, and highly sensitive, reaction speed weakens diamond colour center and its week soon
The interaction of nucleon is enclosed, realizes nuclear polarisation, quantum measurement is improved and uses the decoherence time, diamond colour center is based on to improve
The sensitivity that quantum measures, increases the type of detection mode.
What the present invention was not disclosed in detail partly belongs to techniques known.
Although the illustrative specific implementation mode of the present invention is described above, in order to the technology people of this technology neck
Member understands the present invention, it should be apparent that the present invention is not limited to the range of specific implementation mode, to the ordinary skill of the art
For personnel, as long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these become
Change is it will be apparent that all utilize the innovation and creation of present inventive concept in the row of protection.
Claims (5)
1. a kind of polar system of diamond colour center nucleon, it is characterised in that：The system includes：Diamond sample, optical control
System, microwave control system, magnetic field control system, control and data collecting system, wherein：
The diamond sample is fixed on platform by fixing device；
The optical control system is set to using diamond sample as core before and after sample, and the laser modulated is imported sample
And the fluorescence signal generated after collection and sample effect；
The microwave control system is set to sample both sides using diamond sample as core, and the microwave signal modulated is led
Enter diamond sample, microwave control system and optical control system are mutual indepedent, are independent of each other each other；
Diamond sample is included in central area in its device by the magnetic field control system, and optical control system is grasped with microwave
Control components of system as directed device is contained in the control system of magnetic field；
The control is connect with data collecting system with above-mentioned optical control system and microwave control system, unified regulation and control
Running between above system simultaneously exports data result.
2. a kind of polar system of diamond colour center nucleon according to claim 1, it is characterised in that：Wherein, optics is grasped
Control system includes：(1) diamond colour center electronic polarization light path system, the light path system chief component are lasing light emitter, light beam
Modulation device and respective optical component, wherein each component part is connected by space optical path, beam modulation device with it is described
Control connect with data collecting system, the light path system main function be complete diamond colour center electronics quantum state polarization；(2)
Diamond colour center coherent layout imprisons nuclear spin and decouples light path system, which is lasing light emitter, light beam
Modulation device and respective optical component, wherein each component part is connected by space optical path, beam modulation device with it is described
Control connect with data collecting system, the light path system main function be generate precisely align the hyperfine energy level of diamond colour center
Transition realizes that the decoupling of colour center and surrounding nucleon is completed in Coherent Population Trapping imprison；(3) phosphor collection light path system, the light path system
System chief component is detector, light path regulator and related component, wherein each component part passes through space optical path phase
Connection, detector are connect with the control with data collecting system, which is glimmering to diamond colour center
Light carries out the detection of photon sideband phosphor collection and zero-phonon line detection, the situation of tracking observation diamond colour center nuclear spin polarization.
3. a kind of polar system of diamond colour center nucleon according to claim 1, it is characterised in that：Microwave control system
Including：Microwave source, switch, amplifier, transmission antenna and load, microwave source and switch are with the control and data acquisition
System connection, the system are used to generate the microwave pulse sequence that control diamond colour center electronics is overturn between ground state quantum state.
4. a kind of polar system of diamond colour center nucleon according to claim 1, it is characterised in that：Magnetic field control system
Including：Power supply and field generator for magnetic, which generates precision current control field generator for magnetic by regulating and controlling power supply, and then produces
The raw stable magnetic field for making the generation Zeeman splitting of diamond colour center electronics.
5. a kind of polar system of diamond colour center nucleon according to claim 1, it is characterised in that：Control is adopted with data
The above-mentioned three kinds of control systems of ordered pair carry out joint debugging, system feedback regulation and control and data acquisition process when collecting system includes design.
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| CN109946281A (en) * | 2019-04-11 | 2019-06-28 | 北京航空航天大学 | A kind of the quantum sensing device and method of the solid defects colour center based on transparent material microwave antenna |
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