CN209542712U - Microwave list quantum detector based on Microwave Optics modulator - Google Patents
Microwave list quantum detector based on Microwave Optics modulator Download PDFInfo
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- CN209542712U CN209542712U CN201821899480.XU CN201821899480U CN209542712U CN 209542712 U CN209542712 U CN 209542712U CN 201821899480 U CN201821899480 U CN 201821899480U CN 209542712 U CN209542712 U CN 209542712U
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Abstract
The utility model proposes a kind of microwave list quantum detector based on Microwave Optics modulator, including microwave signal input unit, low-noise amplifier, microwave filter, laser, microwave photon converter, optical filter, photon controllable attenuator and single-photon detector.The utility model is based on Microwave Optics modulator, and optical signalling will be converted in microwave signal, realizes the detection of microwave list quantum.Microwave list quantum detector of the utility model based on Microwave Optics modulator, microwave signal is inputted at microwave signal input unit, microwave signal is by amplification filtering, electro-optic conversion, photon filtering, into photon detector, single photon signal is obtained, for the signal processing of rear end, the electromagnetic property of analysis input microwave signal.The utility model has the characteristics that detection efficient is high, counting rate is high, dark counting is low, and all device work at room temperature, are not necessarily to dedicated refrigeration equipment, and without using the big micro-nano mechanism of processing technology difficulty, it is convenient to realize.
Description
Technical field
The utility model belongs to microwave quantum accurate measurement and quantum field of radar, specially a kind of to be based on Microwave Optics tune
The microwave list quantum detector of device processed.
Background technique
The detection of microwave list quantum is the key technology that quantum field of precision measurement is badly in need of, and has achievable technology in the world,
Prior art includes direct microwave list quantum detection and the detection of indirect microwave list quantum.
Direct microwave quantum detection is using under the conditions of extremely low temperature, using the response of the peering single microwave quantum of Josephson,
Realize the detection of microwave list quantum.The detector operating temperature is the extremely low temperature of 10mK, and Josephson junction is processed using micrometer structure
Technique is realized.This method can be the competitive implementation of microwave quantum Radar Technology with direct detection microwave list quantum
One of.
The indirect implementation method of microwave list quantum detector is under the conditions of the extremely low temperature of 10mK, using micro-nano structure machine
Tool resonant cavity generates coupling response to the momentum of microwave list quantum, by microwave quantum using microwave resonance and optical resonance mechanism
It is converted into optics single photon, then is detected by optics single-photon detector, realizes microwave list quantum detector.This method is microwave
Another competitive implementation of quantum Radar Technology.
The first implementation method of the prior art, i.e., the direct microwave list quantum Detection Techniques realized using Josephson junction,
Under the conditions of 10mK extremely low temperature, using the response of the peering microwave list quantum of Josephson, the detection of microwave list quantum is realized.The detection
Device works in the operating temperature of the extremely low temperature of 10mK, and the building of extremely low temperature working environment needs to set using the dedicated of dilution refrigeration technology
Standby, technology is complicated, involves great expense.Josephson junction manufacturing process is complicated simultaneously, realizes that difficulty is big.
Microwave list quantum is coupled realization with optics single photon by micro-nano structure by second of implementation method of the prior art
Microwave list quantum indirect detection method, maximum shortcoming be equally place microwave device the pole 10mK low temperature environment, skill
Art is complicated, involves great expense.Mechanical cavity switching mechanism simultaneously is micro-nano structure, and process is complicated, realizes that technology difficulty is big.
Utility model content
The utility model is directed to microwave quantum radar signal characteristic and microwave quantum radar growth requirement, proposes a kind of new
The microwave list quantum detector implementation method that can be worked under normal temperature environment, i.e., the microwave realized based on Microwave Optics modulator
Single quantum detector realizes the detection of microwave list quantum, meets mesh using the integrated of current existing conventional microwave and optical device
The demand of preceding microwave quantum radar.
The utility model is using switch technology, optically filtering in microwave signal amplification filter preprocessing technology, Microwave Optics
The method that technology and optics single-photon detecting survey technology combine realizes the microwave list quantum detection based on Microwave Optics modulator
Device.
The technical solution of the utility model are as follows:
A kind of microwave list quantum detector based on Microwave Optics modulator, it is characterised in that: including microwave signal
Input unit, low-noise amplifier, microwave filter, laser, microwave photon converter, optical filter, photon controllably decline
Subtract device and single-photon detector；
Microwave filter is inputted after low-noise amplifier by the microwave signal that microwave signal input unit inputs, it is micro-
Wave filter is filtered the microwave signal of amplification, filters signal out-of-band noise and spuious；
The laser signal that the filtered microwave signal of microwave filter and laser generate inputs microwave photon converter；
Microwave signal is modulated in optical signalling by microwave photon converter, and modulated laser signal includes that laser is defeated
Main carrier and modulating subcarrier out, wherein on the first subcarrier of microwave signal frequency spectrum shift to laser signal；
Optical filter filters out the main carrier signal and high order subcarrier in microwave photon converter output optical signalling
Signal leaves behind the first subcarrier signal；
The signal strength of optical filter output signal decays to single-photon detector through photon controllable attenuator can be with work
The intensity of work；
Single-photon detector to by microwave quantum conversion Lai optical photons single photon reception and clock.
Further preferred embodiment, a kind of microwave list quantum detector based on Microwave Optics modulator, feature
It is: if the output signal of photon controllable attenuator is divided into main line by photon beam splitter, passes through light per output signal all the way
Sub- variable delay carries out delay adjustment and inputs the single-photon detecting on each road respectively after eliminating the time delay error between each road
It surveys in device, single photon detection is carried out to the optical photons that input comes per single-photon detector all the way and clocks, realize multi-pass
Road microwave list quantum is detected and is clocked.
Further preferred embodiment, a kind of microwave list quantum detector based on Microwave Optics modulator, feature
Be: photon variable delay adjusts amount of delay by noise signal coincidence counting pack peak method.
Further preferred embodiment, a kind of microwave list quantum detector based on Microwave Optics modulator, feature
Be: the signal-to-noise ratio degradation control that first signal conversion and treatment process introduce is being less than 0.1dB by the low-noise amplifier
In range.
Further preferred embodiment, a kind of microwave list quantum detector based on Microwave Optics modulator, feature
Be: the laser chooses wavelength 1550nm, 10~60mW of power, the laser that MHz grades of bandwidth.
Further preferred embodiment, a kind of microwave list quantum detector based on Microwave Optics modulator, feature
Be: the optical filter is micromicron grade pole narrow linewidth filter.
Beneficial effect
Utility model works under normal temperature conditions, are based on Microwave Optics modulator, optics will be converted in microwave signal
Signal realizes the detection of microwave list quantum, can be used for microwave quantum enhancing field of radar, realizes microwave quantum coincidence measurement and microwave
The purpose of quantum number state is analyzed.Microwave list quantum detector of the utility model based on Microwave Optics modulator, in microwave signal
At input unit input microwave signal, such as frequency be 10GHz microwave single-carrier signal, microwave signal by amplification filtering,
Electro-optic conversion, photon filtering, into photon detector, obtains single photon signal, and for the signal processing of rear end, analysis input is micro-
The electromagnetic property of wave signal.The utility model microwave signal can be single-carrier signal, be also possible to pulse signal, or any
Form (including thermal noise) microwave signal.
The utility model method is simple, practicability is good, can work at normal temperature, the microwave based on Microwave Optics modulator
Single quantum detector working frequency is 9.5GHz~10.5GHz, and detection efficient 60%, counting rate 10MHz, dark counting is
250, Josephson junction microwave list quantum detector and micro-nano structure microwave list quantum with work in the extremely low temperature of 10mK are visited indirectly
It surveys device to compare, the two performance is suitable.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1: the principle frame of the binary channels output type micro-wave list quantum detector in embodiment 1 based on Microwave Optics modulator
Figure；
Fig. 2: the principle frame of the single channel output type micro-wave list quantum detector in embodiment 2 based on Microwave Optics modulator
Figure；
Fig. 3: the microwave list quantum detection result figure that binary channels output type micro-wave list quantum detector obtains；
Fig. 4: the microwave list quantum detection result figure that single channel output type micro-wave list quantum detector obtains.
Specific embodiment
The embodiments of the present invention are described below in detail, the embodiment is exemplary, it is intended to for explaining this reality
With novel, and should not be understood as limiting the present invention.
Embodiment 1:
The present embodiment is that binary channels exports type micro-wave list quantum detector, and by microwave signal input unit (1), high-performance is low
Noise amplifier (2), microwave filter (3), laser (6), microwave photon converter (4), optical filter (5), photon can
It controls attenuator (7), photon beam splitter (8), photon variable delay (9) and single-photon detector (10) composition.
Microwave signal input unit (1) is for inputting quantum radar return signal, signal source input signal and/or noise source
Input signal.
High performance low noise amplifier (2) controls the signal-to-noise ratio degradation that first signal conversion and treatment process introduce small
In within the scope of 0.1dB.
Microwave filter (3) is filtered the microwave signal of amplification, filters signal out-of-band noise and spuious.
The laser signal that the filtered microwave signal of microwave filter (3) and laser (6) generate inputs microwave photon
Converter (4), wherein laser choose wavelength 1550nm, 10~60mW of power, MHz grades of bandwidth.Microwave photon converter (4) is adopted
Microwave signal is modulated in optical signalling by the Microwave Optics modulator for being 10GHz with modulating frequency, realization.According to modulated signal
Theory and technology, modulated laser signal include the main carrier and modulating subcarrier of laser output, wherein microwave signal frequency
Spectrum is moved on the first subcarrier of laser signal.
Optical filter (5) is micromicron (pm) grade pole narrow linewidth filter, filters out microwave photon converter (4) output
Main carrier signal and high order subcarrier signal in optical signalling, leave behind the first subcarrier signal, the signal spectrum characteristic and
Microwave signal characteristic (in addition to centre frequency is different) is identical.
First subcarrier signal of the photon controllable attenuator (7) for optical filter (5) output that decays, makes signal strength
Decay to the intensity that single-photon detector can work.
Photon beam splitter (8) realizes signal equal part；Since the time delay of photon beam splitter two-way output is there are error,
Delay adjustment is carried out to the two paths of signals that photon beam splitter exports by photon variable delay (9), is met by noise signal
It counts pack peak method and adjusts amount of delay, eliminate two-way time delay error.
Single-photon detector (10) is the independent single-photon detector of two-way, carries out single photon to the optical photons that input comes
It detects and clocks, realize that binary channels output type micro-wave list quantum is detected and clocked.
Optical beam-splitter (8) can be multichannel beam splitter, including two, three, four, five or more multichannel, pass through photon
Beam splitter (8) realizes signal equal part.By photon variable delay (9), to photon beam splitter (8) output per signal all the way into
Line delay, it is ensured that the photon signal that is input in multichannel photon detector (10) while receiving, realize that multichannel exports type micro-wave
Single quantum is detected and is clocked.
In the binary channels output type micro-wave list quantum detector system that the utility model specific embodiment 1 is realized, microwave
Signal is single carrier 10GHz microwave signal, is filtered by amplification, electro-optic conversion, photon filtering, optical beam splitting, into binary channels
Photon detector, obtained binary channels output type micro-wave list quantum detection result is as shown in figure 3, solid line is logical for detector in figure
The Counting Characteristics response curve that road 1 detects, dotted line are that the Counting Characteristics response that probe access 2 detects is bent
Line, each pulse represent detector and receive a photon.
Embodiment 2:
The present embodiment is that single channel exports type micro-wave list quantum detector, and by microwave signal input unit (1), high-performance is low
Noise amplifier (2), microwave filter (3), microwave photon converter (4), laser (6), optical filter (5), photon can
It controls attenuator (7), single-photon detector (10) composition.
Microwave signal input unit (1) is for inputting quantum radar return signal, signal source input signal or noise source
Input signal
High performance low noise amplifier (2) controls the signal-to-noise ratio degradation that first signal conversion and treatment process introduce small
In within the scope of 0.1dB
Microwave filter (3) is filtered the microwave signal of amplification, filters signal out-of-band noise and spuious；Microwave filtering
The laser signal that the filtered microwave signal of device (3) and laser (6) generate inputs microwave photon converter (4), wherein swashing
Light device choose wavelength 1550nm, 10~60mW of power, MHz grades of bandwidth.Microwave photon converter (4) use modulating frequency for
Microwave signal is modulated in optical signalling by the Microwave Optics modulator of 10GHz, realization.According to modulated signal theory and technology,
Modulated laser signal includes the main carrier and modulating subcarrier of laser output, wherein microwave signal frequency spectrum shift to laser
On first subcarrier of signal.
Optical filter (5) is micromicron (pm) grade pole narrow linewidth filter, filters out microwave photon converter (4) output
Main carrier signal and high order subcarrier signal in optical signalling, leave behind the first subcarrier signal, the signal spectrum characteristic and
Microwave signal characteristic (in addition to centre frequency is different) is identical.
Subcarrier signal of the photon controllable attenuator (7) for optical filter (5) output that decays, makes signal intensity attenuation
The intensity that can be worked to single-photon detector.
Single-photon detector (10) be single channel single-photon detector, to by microwave quantum conversion come optical photons carry out singly
Photon acceptor simultaneously clocks.
In the single channel output type micro-wave list quantum detector system that the utility model specific embodiment 2 is realized, microwave
Signal is single carrier 10GHz microwave signal, is filtered by amplification, electro-optic conversion, photon filtering, into single channel photon detection
Device, obtained single channel output type micro-wave list quantum detection result as shown in figure 4, in figure each pulse represent detector and connect
Receive a photon.
The utility model proposes the microwave list quantum detector based on Microwave Optics modulator, component technology used at
Ripe, performance is stablized.The microwave list quantum detector system of institute's utility model has high detection efficient, counting rate height, dark counting low
The characteristics of, all device work at room temperature, are not necessarily to dedicated refrigeration equipment, without using the big micro-nano machine of processing technology difficulty
Structure, it is convenient to realize.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.
Claims (6)
1. a kind of microwave list quantum detector based on Microwave Optics modulator, it is characterised in that: input and fill including microwave signal
Set, low-noise amplifier, microwave filter, laser, microwave photon converter, optical filter, photon controllable attenuator and
Single-photon detector；
Microwave filter, microwave filter are inputted after low-noise amplifier by the microwave signal that microwave signal input unit inputs
Wave device is filtered the microwave signal of amplification, filters signal out-of-band noise and spuious；
The laser signal that the filtered microwave signal of microwave filter and laser generate inputs microwave photon converter；
Microwave signal is modulated in optical signalling by microwave photon converter, and modulated laser signal includes what laser exported
Main carrier and modulating subcarrier, wherein on the first subcarrier of microwave signal frequency spectrum shift to laser signal；
Optical filter filters out the main carrier signal and high order subcarrier signal in microwave photon converter output optical signalling,
Leave behind the first subcarrier signal；
The signal strength of optical filter output signal decays to what single-photon detector can work through photon controllable attenuator
Intensity；
Single-photon detector to by microwave quantum conversion Lai optical photons single photon reception and clock.
2. a kind of microwave list quantum detector based on Microwave Optics modulator according to claim 1, it is characterised in that: light
If the output signal of sub- controllable attenuator is divided into main line by photon beam splitter, prolong per output signal all the way by the way that photon is variable
When device carry out delay adjustment inputted in the single-photon detector on each road respectively, often after eliminating the time delay error between each road
Single-photon detector carries out single photon detection to the optical photons that input comes and clocks all the way, realizes Multi-channel microwave list amount
Son is detected and is clocked.
3. a kind of microwave list quantum detector based on Microwave Optics modulator according to claim 2, it is characterised in that: light
Sub- variable delay adjusts amount of delay by noise signal coincidence counting pack peak method.
4. a kind of microwave list quantum detector based on Microwave Optics modulator according to claim 1, it is characterised in that: institute
It states low-noise amplifier the signal-to-noise ratio degradation control that first signal conversion and treatment process introduce is being less than within the scope of 0.1dB.
5. a kind of microwave list quantum detector based on Microwave Optics modulator according to claim 1, it is characterised in that: institute
It states laser and chooses wavelength 1550nm, 10~60mW of power, the laser that MHz grades of bandwidth.
6. a kind of microwave list quantum detector based on Microwave Optics modulator according to claim 1, it is characterised in that: institute
Stating optical filter is micromicron grade pole narrow linewidth filter.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521282A (en) * | 2018-11-16 | 2019-03-26 | 中国电子科技集团公司第三十九研究所 | Microwave list quantum detector based on Microwave Optics modulator |
| CN110932791A (en) * | 2019-11-16 | 2020-03-27 | 中国电子科技集团公司第三十九研究所 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
-
2018
- 2018-11-16 CN CN201821899480.XU patent/CN209542712U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521282A (en) * | 2018-11-16 | 2019-03-26 | 中国电子科技集团公司第三十九研究所 | Microwave list quantum detector based on Microwave Optics modulator |
| CN110932791A (en) * | 2019-11-16 | 2020-03-27 | 中国电子科技集团公司第三十九研究所 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
| CN110932791B (en) * | 2019-11-16 | 2022-08-09 | 中国电子科技集团公司第三十九研究所 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
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