CN108844970A - A kind of the circular polarisation microwave control system and method for diamond colour center energy level - Google Patents
A kind of the circular polarisation microwave control system and method for diamond colour center energy level Download PDFInfo
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- CN108844970A CN108844970A CN201810797368.3A CN201810797368A CN108844970A CN 108844970 A CN108844970 A CN 108844970A CN 201810797368 A CN201810797368 A CN 201810797368A CN 108844970 A CN108844970 A CN 108844970A
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Abstract
The invention discloses a kind of circular polarisation microwave control system of diamond colour center energy level and method, which includes diamond sample, microwave source system, phase-adjusting system, microwave transmission system and control system.Wherein, microwave source system can provide two way microwave signals, when wherein signal passes through phase-adjusting system all the way, control system program controls the change of the road signal phase, microwave transmission system receives two paths of signals, due to the special shape and size design of microstrip antenna resonance device, generated return loss is low, the broadband circle polarized microwave magnetic field of field homogeneity can be used for the precision manipulation to diamond colour center energy level in area, this process is the important foundation of quantum accurate measurement.Experimental situation of the present invention is simple, small in size, and energy consumption is few, and robustness is good, and is more convenient for manipulating the overturning between electron spin ground states energy level, provides support for technologies such as quantum calculation, quantum sensing, Quantum Teleportations based on diamond colour center.
Description
Technical field
The present invention relates to quantum Technology of Precision Measurement field more particularly to a kind of circular polarisation microwaves of diamond colour center energy level
Control system and method.
Background technique
Diamond colour center carries out pole of the quantum accurate measurement by the realization of confocal fluorescent microscopic system to NV colour center assemblage
Change and detects.System mainly includes：Optical control system, microwave control system, magnetic field control system etc..Wherein microwave manipulation system
System is overturn using circular polarisation microwave precision manipulation colour center electron spin ground states energy level, carries out the survey of quantum precision for diamond colour center
Amount provides important foundation.In high concentration diamond, microwave magnetic field precision manipulates colour center electron spin assemblage ground state level
Difficulty it is big.The microwave control system of existing diamond colour center ground state level mainly has and makes colour center by the external magnetic field of 500Gs
The system of Zeeman splitting, microwave radio resonance field polar system occur for ground state level, and the microwave control system volume is big, cost
Height, and low with greater need for return loss, field homogeneity in area broadband circle polarized microwave magnetic field is tested in quantum accurate measurement.
Summary of the invention
According to one embodiment of present invention, provide a kind of diamond colour center energy level circular polarisation microwave control system and
Method.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of circular polarisation microwave behaviour of diamond colour center energy level
Control system, the system include：Diamond sample, microwave source system, phase-adjusting system, microwave transmission system, control system.Its
In,
The diamond sample containing NV colour center, is placed on microwave transmission system；
The microwave source system can provide two way microwave signals, and amplify microwave signal according to demand；
The phase-adjusting system carries out phase shift behaviour after receiving microwave source signal, to source signal wherein all the way
Make；
The microwave transmission system generates return loss using diamond sample as core, using microstrip antenna resonance device
Low, field homogeneity in area broadband circle polarized microwave magnetic field, and the microwave signal modulated is imported into diamond sample；
The control system and above-mentioned microwave source system, phase-adjusting system and microwave transmission system has connection, unites
Running between one regulation above system.
Wherein, microwave source system includes：Microwave source, switch, amplifier etc.；Microwave source, switch and amplifier and described
Control system connection, the system are used to generate the microwave signal of manipulation colour center quantum transition between states；
Wherein, phase-adjusting system includes：Phase shifting equipment and level converter.Phase shifting equipment receives microwave source system
Change its phase after signal all the way, changes its phase, level conversion dress after the signal all the way of phase shifting equipment reception microwave source system
It sets and phase shifting equipment is connected with control system.
Wherein, microwave transmission system includes：Microstrip antenna resonance device and impedance.The special shape of microstrip antenna resonance device
Shape and size design can produce return loss is low, in area field homogeneity broadband circle polarized microwave magnetic field, and will modulate
Microwave signal imports diamond sample；
Wherein, control system uniformly regulates and controls the running of microwave source system, phase-adjusting system and microwave transmission system.
A kind of circular polarisation microwave control method of diamond colour center energy level, including：
Diamond sample is placed on to the center of microstrip antenna resonance device, two of them port is respectively connected to microwave source system
The signal of system and phase-adjusting system output, remaining port is connected with impedance respectively；
The microwave source system exports two paths of signals, and process control phase-adjusting system changes it to control system according to demand
In signal all the way phase；
After the microwave transmission system receives two paths of signals, microstrip antenna resonance device therein be can produce with echo
Be lost low, wide bandwidth, in circular polarisation and area field homogeneity feature microwave magnetic field；
The microwave magnetic field that the microstrip antenna resonance device generates can be realized to diamond nitrogen-vacancy colour center electron spin base
The accurate manipulation of state energy level.
The advantages of the present invention over the prior art are that：The systemic effect can be mentioned in diamond sample, microwave source system
For two way microwave signals, wherein for signal after phase-adjusting system, control system program controls the road signal phase all the way
Change, after microwave transmission system receives two paths of signals, due to the special shape and size design of microstrip antenna resonance device, is produced
Raw microwave magnetic field can be used for the precision manipulation to diamond colour center electron spin ground states energy level, this process is that quantum precision is surveyed
The important foundation of amount.The microwave magnetic field that the system generates has that return loss is low, field homogeneity in wide bandwidth, circular polarisation and area
The characteristics of.The low high coupling efficiency meaned in diamond nitrogen-between vacancy colour center and microwave magnetic field of return loss；Wide bandwidth
Mean that there are the ranges of broadband in quantum accurate measurement experiment convenient for the manipulation to electron spin ground states；Circular polarisation microwave
Magnetic field realize can selective excitation nitrogen-vacancy colour center electron spin ground states energy level transition in the environment of approximate zero magnetic field,
Compared with existing system, the system bulk is small, experimental situation is simple and energy consumption is few；It is reduced the characteristics of field homogeneity in area pair
Nitrogen-vacancy colour center assemblage electron spin ground states energy level precision manipulation complexity, the robustness of system are good.
Detailed description of the invention
Fig. 1 is a kind of base of the circular polarisation microwave control system of diamond colour center energy level provided by one embodiment of the present invention
This structural schematic diagram；
Fig. 2 is the basic structure schematic diagram of microwave transmission system provided by one embodiment of the present invention；
Fig. 3 is the structural representation of the microstrip antenna resonance device in microwave transmission system provided by one embodiment of the present invention
Figure；
Fig. 4 is a kind of showing for circular polarisation microwave control method of diamond colour center energy level provided by one embodiment of the present invention
Meaning property flow chart.
Specific embodiment
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 base of the circular polarisation microwave control system of diamond colour center energy level provided by one embodiment of the present invention
This structural schematic diagram, the system include：Diamond sample 101, microwave source system 103, phase-adjusting system 104, microwave transmission
System 105, control system 102.Wherein,
The diamond sample 101 containing NV colour center, is placed on microwave transmission system；
The microwave source system 103 can provide two way microwave signals, and amplify microwave signal according to demand；
The phase-adjusting system 104 carries out phase shift after receiving microwave source signal, to source signal wherein all the way
Operation；
The microwave transmission system 103 generates echo using diamond sample as core, using microstrip antenna resonance device
Low, field homogeneity in area broadband circle polarized microwave magnetic field is lost, and the microwave signal modulated is imported into diamond sample；
The control system 102 and above-mentioned microwave source system 103, phase-adjusting system 104 and microwave transmission system 105
There are connection, the running between unified regulation above system.
The systemic effect is used in diamond sample 101, generated microwave magnetic field to diamond colour center electron spin base
The accurate manipulation of state energy level, is the important foundation of quantum accurate measurement.The system generate microwave magnetic field have return loss it is low,
In wide bandwidth, circular polarisation and area the characteristics of field homogeneity.This system improves in diamond nitrogen-vacancy colour center and microwave magnetic field
Between coupling efficiency, and reduce to colour center assemblage electron spin ground states energy level precision manipulation complexity.The system has
The range of broadband is convenient for manipulating electron spin ground states in quantum accurate measurement experiment, the circular polarisation microwave magnetic of generation
It field can selective excitation nitrogen-vacancy colour center electron spin ground states energy level transition in the environment of approximate zero magnetic field.The system body
Product is small, energy consumption is few, and experimental situation is simply and the robustness of system is good.
Fig. 2 is the basic structure schematic diagram of microwave transmission system 105 provided by one embodiment of the present invention.Microwave transmission system
System 105 includes microstrip antenna resonance device 201 and two impedances 202 (1)-(2).Its necessary technology core of microwave transmission system 105
The heart be microstrip antenna resonance device 201, two impedances 202 (1)-(2) be in order in signals transmission with information source internal impedance
Matching improves efficiency of transmission.Microstrip antenna resonance device 201 is mainly characterized by：It is to complete diamond colour center ground state level jump
The key moved, can produce return loss is low, in area field homogeneity broadband circle polarized microwave magnetic field.The microwave magnetic field is in resonance
The low high coupling efficiency meaned in diamond nitrogen-between vacancy colour center and microwave magnetic field of return loss at frequency, microwave magnetic
Wide bandwidth mean system have broadband range be convenient for quantum accurate measurement experiment in electron spin ground states into
Row manipulation, the realization of circular polarisation microwave magnetic field can make the electron spin ground states energy level of diamond colour center carry out selective transition.It connects
Get off for the convenience of elaboration, by microstrip antenna resonance device 201 composition and effect be explained.
Fig. 3 is the knot of the microstrip antenna resonance device 201 in microwave transmission system 105 provided by one embodiment of the present invention
Structure schematic diagram.Microstrip antenna resonance device includes：Substrate 301, microstrip antenna 302 and four ports 303 (1)-(4)
Wherein, diamond sample 101 is placed in the center of microstrip antenna resonance device 201, port 303 (1) and 303 (3) point
Not Jie Ru the signal that exports of microwave source system 103 and phase-adjusting system 104, the phase difference of two paths of signals is to realize that circular polarisation is micro-
Wave magnetic field provides condition.Port 303 (2) and 303 (4) are connected with impedance 202 (1) and 202 (2) respectively, are to believe
It is matched in number transmission process with information source internal impedance, improves efficiency of transmission.The special shape and size design of microstrip antenna 302 can produce
Raw return loss is low, in area field homogeneity broadband circle polarized microwave magnetic field.
Fig. 4 is a kind of circular polarisation microwave control method of diamond colour center ground state level provided by one embodiment of the present invention
Schematic flow chart, including：
410, diamond sample 101 is placed on to the center of microstrip antenna resonance device 201, port 303 (1) and 303 (3)
Be respectively connected to the signal that microwave source system 103 and phase-adjusting system 104 export, port 303 (2) and 303 (4) respectively with impedance
202 (1) are connected with 202 (2)；
420, microwave source system 103, after phase-adjusting system 104 receives microwave source signal, 102 journey of control system are opened
Sequence control phase-adjusting system 104 changes the phase of signal all the way therein；
430, two paths of signals is transferred in microwave transmission system 105, and microstrip antenna resonance device 201 therein can produce
Have the characteristics that low return loss, wide bandwidth, in circular polarisation and area field homogeneity microwave magnetic field.
440, the microwave magnetic field that microstrip antenna resonance device 201 generates is realized to diamond nitrogen-vacancy colour center electron spin
The accurate manipulation of ground state level.
What the present invention was not disclosed in detail partly belongs to techniques known.
Although the illustrative specific embodiment 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 embodiment, 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 column of protection.
Claims (6)
1. a kind of circular polarisation microwave control system of diamond colour center energy level, which is characterized in that the system includes：Diamond-like
Product, microwave source system, phase-adjusting system, microwave transmission system, control system, wherein
The diamond sample containing NV colour center, is placed on microwave transmission system；
The microwave source system can provide two way microwave signals, and amplify microwave signal according to demand；
The phase-adjusting system carries out phase shift operation after receiving microwave source signal, to source signal wherein all the way；
The microwave transmission system using diamond sample as core, using microstrip antenna resonance device generate return loss it is low,
The broadband circle polarized microwave magnetic field of field homogeneity in area, and the microwave signal modulated is imported into diamond sample；
The control system and above-mentioned microwave source system, phase-adjusting system and microwave transmission system has connection, unified to adjust
Control the running between above system.
2. the circular polarisation microwave control system of diamond colour center energy level according to claim 1, it is characterised in that：Wherein,
Microwave source system includes：Microwave source, switch, amplifier etc.；Microwave source, switch and amplifier are connect with the control system,
The system is used to generate the microwave signal of manipulation colour center quantum transition between states.
3. the circular polarisation microwave control system of diamond colour center energy level according to claim 1, it is characterised in that：Wherein,
Phase-adjusting system includes：Phase shifting equipment and level converter, phase shifting equipment receive microwave source system signal all the way after change
Become its phase, phase shifting equipment is connected by level converter with control system.
4. the circular polarisation microwave control system of diamond colour center energy level according to claim 1, it is characterised in that：Wherein,
Microwave transmission system includes：Microstrip antenna resonance device and impedance, the special shape and size design of microstrip antenna resonance device
Can produce return loss is low, in area field homogeneity broadband circle polarized microwave magnetic field, and the microwave signal modulated is imported
Diamond sample.
5. the circular polarisation microwave control system of diamond colour center energy level according to claim 1, it is characterised in that：Wherein,
Control system uniformly regulates and controls the running of microwave source system, phase-adjusting system and microwave transmission system.
6. a kind of circular polarisation microwave control method of diamond colour center energy level, which is characterized in that including：
Diamond sample is placed on to the center of microstrip antenna resonance device, two of them port be respectively connected to microwave source system and
The signal of phase-adjusting system output, remaining port is connected with impedance respectively；
The microwave source system exports two paths of signals, and the change of process control phase-adjusting system is therein according to demand for control system
The phase of signal all the way；
After the microwave transmission system receives two paths of signals, microstrip antenna resonance device therein be can produce with return loss
The microwave magnetic field of field homogeneity feature in low, wide bandwidth, circular polarisation and area；
The microwave magnetic field that the microstrip antenna resonance device generates can be realized to diamond nitrogen-vacancy colour center electron spin ground states energy
The accurate manipulation of grade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810797368.3A CN108844970A (en) | 2018-07-19 | 2018-07-19 | A kind of the circular polarisation microwave control system and method for diamond colour center energy level |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459449A (en) * | 2018-12-28 | 2019-03-12 | 北京航空航天大学 | A kind of NV colour center automatic phase control circular polarisation microwave control system and method |
| CN109633290A (en) * | 2019-01-07 | 2019-04-16 | 中国科学院地质与地球物理研究所 | A kind of microwave field field strength measurement system and measurement method |
| CN109921188A (en) * | 2019-04-11 | 2019-06-21 | 北京航空航天大学 | A kind of solid colour center frequency adjustable microwave control system and method |
| CN110600880A (en) * | 2019-09-19 | 2019-12-20 | 北京航空航天大学 | Circularly polarized frequency-adjustable solid color center microwave control system and method without phase shifter |
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| CN105444749A (en) * | 2015-11-07 | 2016-03-30 | 中北大学 | Bailey phase shift-based solid-state spinning resonant gyroscope of crowded NV colored core diamond |
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| CN105444749A (en) * | 2015-11-07 | 2016-03-30 | 中北大学 | Bailey phase shift-based solid-state spinning resonant gyroscope of crowded NV colored core diamond |
| CN106229686A (en) * | 2016-08-31 | 2016-12-14 | 上海捷士太通讯技术有限公司 | A kind of Broadband Circular Polarization Microstrip Antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459449A (en) * | 2018-12-28 | 2019-03-12 | 北京航空航天大学 | A kind of NV colour center automatic phase control circular polarisation microwave control system and method |
| CN109633290A (en) * | 2019-01-07 | 2019-04-16 | 中国科学院地质与地球物理研究所 | A kind of microwave field field strength measurement system and measurement method |
| CN109633290B (en) * | 2019-01-07 | 2021-03-23 | 中国科学院地质与地球物理研究所 | Microwave field intensity measurement system and measurement method |
| CN109921188A (en) * | 2019-04-11 | 2019-06-21 | 北京航空航天大学 | A kind of solid colour center frequency adjustable microwave control system and method |
| CN110600880A (en) * | 2019-09-19 | 2019-12-20 | 北京航空航天大学 | Circularly polarized frequency-adjustable solid color center microwave control system and method without phase shifter |
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