CN110932791B - Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect - Google Patents
Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect Download PDFInfo
- Publication number
- CN110932791B CN110932791B CN201911122733.1A CN201911122733A CN110932791B CN 110932791 B CN110932791 B CN 110932791B CN 201911122733 A CN201911122733 A CN 201911122733A CN 110932791 B CN110932791 B CN 110932791B
- Authority
- CN
- China
- Prior art keywords
- microwave
- signal
- band
- filter
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Microwave Amplifiers (AREA)
Abstract
The invention provides a single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect, which comprises a single microwave quantum source, a broadband microwave noise source, a microwave low-noise linear amplifier, a microwave isolator and a first ultra-narrow band microwave filter, wherein the single microwave quantum source is connected with the first ultra-narrow band filter; the single microwave quantum output by the single microwave quantum source and the thermal noise output by the broadband microwave noise source are mixed and input into the microwave low-noise linear amplifier; the microwave low-noise linear amplifier amplifies the input mixed signal; after passing through the microwave isolator, the amplified signal is input into a first extremely narrow band microwave filter, so that the amplification of a single microwave quantum is realized; the bandwidth of the first very narrow band microwave filter is in the order of kHz. The components used in the invention have mature technology and stable performance, all the components can work at room temperature, special extremely low temperature (mK) refrigeration equipment is not needed, and the realization is convenient.
Description
Technical Field
The invention belongs to the technical field of microwave quanta, and particularly relates to a single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect.
Background
The detection of microwave quanta is the key point of current quantum information technology research, and because the energy of a single microwave quantum is low, the measurement by a conventional detection means is difficult. The existing realization modes comprise a superconducting Josephson junction technology, a micro-nano mechanism up-conversion technology, an echo wall up-conversion technology and a modulation type microwave optical up-conversion technology. Both the superconducting Josephson junction detector and the micro-nano mechanism up-conversion detector need ultralow temperature (10mK) refrigeration conditions, are difficult to design, process and experiment, and are not beneficial to engineering application. The performance of the conversion detector on the echo wall is very low, and can only reach the level of 0.2%. Compared with the three implementation modes, the modulation type up-conversion detector is technically easier to implement, has better performance, does not need extremely low temperature (10mK) refrigeration conditions, but needs a single microwave quantum amplifier, otherwise, the performance of the detector such as dark count and the like is rapidly deteriorated.
The existing microwave low-noise linear amplifiers are all small-signal amplifiers (amplification can be only realized when thousands of microwave quanta are input), and amplification of a single microwave quantum cannot be realized.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect. Firstly, a single microwave quantum to be amplified and a large number of microwave quanta (about ten thousand microwave quanta per microsecond) in a broadband noise source are mixed to form an input signal of a low-noise linear amplifier, then the mixed input signal is amplified by the low-noise linear amplifier, then ultra-narrow-band filtering is carried out, noise signals outside a pass band of the filter are filtered, mixed signals obtained after amplification of the single microwave quantum and a small number of noise quanta are left, when the bandwidth of the filter is very small relative to the bandwidth of the noise, the probability of occurrence of noise in the pass band of the filter in the input mixed signals is far smaller than that of the single quanta, so that the amplified residual signals after filtering are mainly signals obtained by amplifying the single microwave quantum, namely, the amplification of the single microwave quantum is realized.
The technical scheme of the invention is as follows:
the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: the microwave low-noise linear amplifier comprises a broadband microwave noise source, a microwave low-noise linear amplifier, a microwave isolator and a first extremely narrow-band microwave filter;
the single microwave quantum to be amplified output by the single microwave quantum source and the thermal noise output by the broadband microwave noise source are mixed and input into the microwave low-noise linear amplifier; the microwave low-noise linear amplifier amplifies the input mixed signal; the amplified signal is input to a first extremely narrow band microwave filter after passing through a microwave isolator; the first ultra-narrow band microwave filter outputs the amplified single microwave quantum; the bandwidth of the first very narrow band microwave filter is in the order of kHz.
Further preferred, the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: the ultra-narrow band microwave filter comprises a multistage down converter, a multistage up converter, a multistage filter and a surface acoustic wave filter;
the received microwave signal is input into a first-stage down converter;
each stage of down converter in the multistage down converter is connected with a filter, and the signal after down conversion is filtered and then output to the next stage of down converter; the band-pass band of each filter corresponds to the band of the signal output by the connected upper-stage down converter, the signal output by the upper-stage down converter is filtered, the side frequency signal and the spurious generated by the upper-stage down converter are filtered, and the useful signal in the pass band is reserved; the multistage down converter and the filter therein finally down-convert the input microwave signal to a video signal;
the video signal is input into a surface acoustic wave filter, and the surface acoustic wave filter is a video band-pass filter corresponding to the video signal band;
a filter is connected behind each level of up-converter in the multi-level up-converter, and the up-converted signal is filtered and then output to the next level of up-converter; the band-pass band of each stage of filter corresponds to the band-pass band of the signal output by the connected upper stage of upper frequency converter, the signal output by the upper stage of upper frequency converter is filtered, the side frequency signal and the stray generated by the upper stage of upper frequency converter are filtered, and the useful signal in the band-pass band is reserved; the multistage up-converter and the filter therein finally convert the video signal input from the surface acoustic wave filter into a microwave band signal;
and inputting the microwave band signal obtained by frequency conversion into a microwave band-pass filter to realize the kHz ultra-narrow band-pass filtering of the microwave signal.
Further preferred, the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: the single microwave quantum source comprises cold air, a first low-sidelobe corrugated horn and a second dipolar narrow-band microwave filter;
the cold air has cosmic background noise and atmospheric thermal noise;
the first low-sidelobe corrugated horn does not receive the heat radiation of the earth from the ground and receives the noise of cold air;
and the second extreme narrow-band microwave filter receives an output signal of the first low-sidelobe corrugated horn, and the bandwidth is in the kHz magnitude.
Further preferred, the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: the single microwave quantum source also comprises a microwave signal source and a second low-sidelobe corrugated horn;
microwave signals generated by the microwave signal source are radiated by the second low-sidelobe corrugated horn aiming at the first low-sidelobe corrugated horn, and the free space between the second low-sidelobe corrugated horn and the first low-sidelobe corrugated horn realizes the simultaneous attenuation of signals and noise.
Further preferred, the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: and the second ultra-narrow band microwave filter realizes 0.05-10 microwave quanta output per microsecond in band.
Further preferred, the single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect is characterized in that: the microwave power output by the first low-sidelobe corrugated horn is controlled by controlling the transmitting power of the microwave signal source, and then the single microwave quantum output with different numerical rates is realized.
Advantageous effects
The invention provides a novel single microwave quantum amplification implementation mode, namely, under the normal temperature condition (liquid nitrogen low temperature, liquid helium low temperature or lower temperature), the input single microwave quantum is mixed into the noise of a broadband, namely, a weak signal is mixed into stronger noise, a low-noise linear amplifier amplifies the stronger noise and the weak signal together by utilizing the back-crossing effect of the stronger noise signal, then an extremely narrow-band microwave filter is utilized to filter out the stronger noise outside a band, and the in-band signal is left, so that the amplification of the single microwave quantum amplifier is realized.
The components used in the invention have mature technology and stable performance, and all the components work at room temperature (or at the low temperature of liquid nitrogen, liquid helium or lower temperature), and special extremely low temperature (mK) refrigeration equipment is not needed, so that the realization is convenient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of a single microwave quantum amplifier;
FIG. 2 a single microwave quantum amplifier embodiment 1;
FIG. 3 Single microwave Quantum Amplifier embodiment 2;
FIG. 4 is a functional block diagram of a thermal noise single microwave quantum source;
FIG. 5 is a functional block diagram of a single microwave quantum source with microwave input;
FIG. 6 is a schematic block diagram of a microwave band kHz ultra-narrow band microwave filter operating at normal temperature.
Detailed Description
In the field of signal processing, the back-crossing effect exists, that is, when a weak signal is lower than a signal processing threshold, the weak signal detection can be realized by mixing the weak signal with a strong signal, and the method is called as a back-crossing effect method. The invention uses this thought to mix the input single microwave quantum into the noise of the broad band, that is, mixing the weak signal (single microwave quantum) into the strong noise signal, the low noise linear amplifier amplifies the strong noise signal and the single microwave quantum together under the normal temperature condition (the effect of liquid nitrogen low temperature, liquid helium low temperature or lower temperature is better), then filters out the strong noise outside the band by the very narrow band microwave filter, keeps the in-band signal, and remains the mixed signal after amplifying the single microwave quantum and a small amount of noise quantum, when the bandwidth of the filter is much smaller than the noise bandwidth, the noise occurrence probability in the pass band of the filter in the input mixed signal is far less than the single quantum occurrence probability, so the rest signal after amplification is mainly the signal amplified to the single microwave quantum, namely, the amplification of a single microwave quantum is realized. The broadband noise therein plays a role of the back-crossing effect in signal processing.
As shown in fig. 1, the present invention includes a broadband microwave noise source, a microwave low noise linear amplifier, a microwave isolator, and a first very narrow band microwave filter. Firstly, inputting a single microwave quantum to be amplified output by a single microwave quantum source and thermal noise output by a broadband microwave noise source into a microwave low-noise linear amplifier together to form stronger power input; the broadband microwave noise source can also be common source with a single microwave quantum source. Then the microwave low-noise linear amplifier amplifies the mixed signal; the amplified signal passes through a microwave isolator, and the device prevents the influence of the stopband reflection of a first ultra-narrow band microwave filter behind on the performance of the microwave low-noise linear amplifier and absorbs the reflected signal of the filter; the first very narrow band microwave filter only allows the signal and noise in the microwave very narrow band pass band to pass through, and the out-of-band noise is filtered, namely the signal passing through the very narrow band microwave filter is equivalent to a single microwave quantum signal emitted by a single microwave quantum source to be amplified, so that the amplification of the single microwave quantum signal is realized.
The single microwave quantum source adopted in the invention is realized by combining a low-sidelobe corrugated horn, a very narrow-band microwave filter and free space noise attenuation, can work at normal temperature and does not need special refrigeration equipment. As shown in fig. 4, it basically consists of a cold air, a first low sidelobe corrugated horn and a second infiniband microwave filter.
The air-cooling system has cosmic background noise to increase air-heating noise, wherein the cosmic background noise is about 2.7K, and the air-heating noise is generally about 10K.
The first low sidelobe corrugated horn has an extremely low sidelobe level, does not receive the heat radiation of the earth from the ground, and receives the noise of cold air.
The bandwidth of the second-pole narrow-band microwave filter is in the kHz magnitude, out-of-band noise power and interference are filtered, and a small amount of in-band noise and signals are left to realize 0.05-10 microwave quanta per microsecond.
The ultra-narrow band microwave filter is a key technical characteristic in the invention:
the existing microwave band-pass filter is usually realized in a waveguide filter mode, and the bandwidth can only reach hundreds of kHz magnitude and cannot reach the kHz level. The ultra-narrow band microwave filter adopted by the invention reduces the passband bandwidth to the level of kHz by carrying out multi-stage down-conversion filtering, surface acoustic wave filtering and multi-stage up-conversion filtering on microwave frequency, does not need low-temperature refrigeration equipment and environment, and realizes ultra-narrow band microwave band-pass filtering of microwave wave band kHz.
As shown in fig. 6, the very narrow band microwave filter includes a multistage down-converter, a multistage up-converter, a multistage filter, and a surface acoustic wave filter.
The received microwave signal is input into the first stage down converter.
Each stage of down converter in the multistage down converter is connected with a filter, and the signal after down conversion is filtered and then output to the next stage of down converter; the band-pass band of each filter corresponds to the band of the signal output by the connected upper-stage down converter, the signal output by the upper-stage down converter is filtered, the side frequency signal and the spurious generated by the upper-stage down converter are filtered, and the useful signal in the pass band is reserved; the multi-stage downconverter and filters therein ultimately downconvert the input microwave signal to a video signal.
And the video signal is input into a surface acoustic wave filter, and the surface acoustic wave filter is a video band-pass filter corresponding to the video signal band.
A filter is connected behind each level of up-converter in the multi-level up-converter, and the up-converted signal is filtered and then output to the next level of up-converter; the band-pass band of each stage of filter corresponds to the band-pass band of the signal output by the connected upper stage of upper frequency converter, the signal output by the upper stage of upper frequency converter is filtered, the side frequency signal and the stray generated by the upper stage of upper frequency converter are filtered, and the useful signal in the band-pass band is reserved; the multistage up-converter and the filters therein finally frequency-convert the video signal input from the surface acoustic wave filter to a microwave band signal.
And inputting the microwave band signal obtained by frequency conversion into a microwave band-pass filter to realize the kHz ultra-narrow band-pass filtering of the microwave signal.
For example, when the input microwave signal is an X-band signal:
the first-stage down converter converts the X-waveband signal into an L-waveband signal, an L-waveband band-pass filter is adopted to filter the L-waveband signal, the second-stage down converter converts the filtered L-waveband signal into an intermediate-frequency signal, the intermediate-frequency band-pass filter is adopted to filter the intermediate-frequency signal, and the third-stage down converter converts the filtered intermediate-frequency signal into a video signal (about 100 kHz);
the sound surface wave filter filters a video signal, the first-stage up-converter up-converts the filtered video signal into an intermediate-frequency signal, the intermediate-frequency signal obtained by up-conversion is filtered by an intermediate-frequency band-pass filter, the second-stage up-converter converts the filtered intermediate-frequency signal obtained by up-conversion into an L-band signal, the L-band signal obtained by up-conversion is filtered by an L-band-pass filter, and the third-stage up-converter converts the filtered L-band signal obtained by up-conversion into an X-band signal;
and filtering the X-band signal obtained by up-conversion by adopting an X-band-pass filter to realize the kHz extremely-narrow band-pass filtering of the X-band microwave signal.
As shown in fig. 4, under normal temperature conditions, the low temperature of the cold air is utilized, so that the cold air thermal noise received by the first low-side lobe corrugated horn is equivalent to a cold load with a terminal of about 15K; after the noise output by the first low-sidelobe corrugated horn passes through the second pole narrow-band microwave filter, the total thermal noise power is reduced to-180 dBW power level, at the moment, about one single microwave quantum output is correspondingly output every 20 microseconds, namely about 0.05 microwave quantum number is output every microsecond, the single microwave quantum source is equivalent to a single microwave quantum source, and therefore the noise output per se forms a typical thermal noise single microwave quantum source.
When a microwave signal is used, a microwave signal source and a second low sidelobe corrugated horn are added as shown in figure 5. The second low side lobe corrugated horn also has extremely low side lobe level, and the influence of multipath effect and transmitted signal quality caused by reflection of side lobes to the first low side lobe corrugated horn after the side lobes are radiated to the ground is avoided. The second low-sidelobe corrugated horn radiates in alignment with the first low-sidelobe corrugated horn, and the free space between the second low-sidelobe corrugated horn and the first low-sidelobe corrugated horn realizes the simultaneous attenuation of signals and noise, so that the influence of the thermal noise, the phase noise and the like of a microwave signal source on the final signal quality is reduced.
The microwave signal source emits a weak power signal (-50dBm to-10 dBm), which is changed according to the relative position between the first low sidelobe corrugated horn and the second low sidelobe corrugated horn, the second low sidelobe corrugated horn is aligned with the first low sidelobe corrugated horn to radiate, the microwave power emitted by the microwave signal source and the accompanying broadband thermal noise power (the noise temperature generally exceeds 290K) are attenuated together through free space attenuation, the thermal noise radiated in the signal source received by the first low sidelobe corrugated horn can be attenuated to a level far less than 1K noise temperature, and the part of noise can be ignored compared with the cold air thermal noise received by the low sidelobe corrugated horn. Therefore, the signal output from the first low side lobe corrugated horn includes only the received microwave signal emitted from the signal source and the thermal noise received from the cold air.
The microwave power output by the first low-side lobe corrugated horn is controlled by controlling the transmitting power of a microwave signal source, so that the output of single microwave quanta with different numerical rates is realized, for example, the microwave power output by the first low-side lobe corrugated horn is about-171.6 dBW, and about one single microwave quantum is output every microsecond. The microwave signal passes through the second narrow-band microwave filter, the microwave quantum number characteristic is unchanged, the noise is obviously reduced due to filtering, and the ratio of the quantum number to the signal quantum number is less than 10%, so that the output of the second narrow-band microwave filter still outputs about one microwave quantum per microsecond on average, and the microwave signal output result conforms to the definition and the requirement of a microwave quantum source.
Specific examples of the invention are given below:
example 1:
as shown in fig. 2, a single microwave quantum (outputting one single microwave quantum per microsecond) output by a single microwave quantum source and a thermal noise microwave quantum (inputting about 1000 single microwave quanta per microsecond) output by a broadband microwave noise source (broadband 1GHz microwave noise source) are output to a microwave low-noise linear amplifier together to form a stronger power input; the broadband microwave noise source and the single microwave quantum source do not share a common source. The microwave low-noise linear amplifier amplifies the mixed signals by 50 dB; the amplified signal passes through a microwave isolator, and the device prevents the influence of the reflection of a first extremely narrow band microwave filter on the performance of the microwave low-noise linear amplifier and absorbs the reflected signal of the filter; the first extremely-narrow band microwave filter only allows signals in a microwave extremely-narrow band pass band to pass through (3kHz pass band width), all frequency noises except for (3kHz pass band width) are filtered, and the remaining signals are signals obtained after single microwave quantum amplification, so that the amplification of the single microwave quantum is realized. In a detection experiment carried out by a single microwave quantum detector, a single microwave quantum is successfully detected.
Example 2:
as shown in fig. 3, under normal temperature conditions, a single microwave quantum (outputting one single microwave quantum per microsecond) output by a single microwave quantum source and a broadband noise source common-source device and a thermal noise microwave quantum (outputting about 1000 single microwave quanta per microsecond) are input into a microwave low-noise linear amplifier together to form a strong power input, and the microwave low-noise linear amplifier performs 60dB amplification on the mixed signal together; the device prevents the influence of the reflection of the first ultra-narrow band microwave filter on the performance of the microwave low-noise linear amplifier and absorbs the reflected signal of the first ultra-narrow band microwave filter after the amplified signal passes through the microwave isolator; the first extremely narrow band microwave filter only allows signals in a microwave extremely narrow band pass band to pass through (5kHz pass band width), all frequency noises except (5kHz pass band width) are filtered, and the remaining signals are equivalent to single microwave quanta to be subjected to single quantum amplification, so that the amplification of the single microwave quanta is realized.
The working environment of the invention can be normal temperature, low temperature or extremely low temperature. The single microwave quantum source outputs a single microwave quantum every 0.1-20 microseconds, the thermal noise output by the broadband microwave noise source requires a bandwidth range of 100 MHz-2 GHz, the broadband microwave noise source and the single microwave quantum source can be used for common source or not, the broadband noise source device outputs 500-2000 single microwave quanta every microsecond, the amplification factor of the microwave low-noise linear amplifier is 30-60 dB, and the passband bandwidth of the ultra-narrow band microwave filter device is 1-10 kHz.
The invention has simple structure and good practicability, can work under the condition of normal temperature, and meets the requirement of a single microwave quantum amplifier required by a single microwave quantum detector experiment.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (5)
1. A single microwave quantum amplifier based on extremely narrow band filtering and back-crossing effect is characterized in that: the microwave low-noise linear amplifier comprises a broadband microwave noise source, a microwave low-noise linear amplifier, a microwave isolator and a first extremely narrow-band microwave filter;
the single microwave quantum to be amplified output by the single microwave quantum source and the thermal noise output by the broadband microwave noise source are mixed and input into the microwave low-noise linear amplifier; the microwave low-noise linear amplifier amplifies the input mixed signal; the amplified signal is input to a first extremely narrow band microwave filter after passing through a microwave isolator; the bandwidth of the first extremely-narrow band microwave filter is in the kHz magnitude;
the first ultra-narrow band microwave filter comprises a multistage down converter, a multistage up converter, a multistage filter and a surface acoustic wave filter;
the received microwave signal is input into a first-stage down converter;
each stage of down converter in the multistage down converter is connected with a filter, and the signal after down conversion is filtered and then output to the next stage of down converter; the band-pass band of each filter corresponds to the band of the signal output by the connected upper-stage down converter, the signal output by the upper-stage down converter is filtered, the side frequency signal and the spurious generated by the upper-stage down converter are filtered, and the useful signal in the pass band is reserved; the multistage down converter and the filter therein finally down-convert the input microwave signal to a video signal;
the video signal is input into a surface acoustic wave filter, and the surface acoustic wave filter is a video band-pass filter corresponding to the video signal band;
a filter is connected behind each level of up-converter in the multi-level up-converter, and the up-converted signal is filtered and then output to the next level of up-converter; the band-pass band of each stage of filter corresponds to the band-pass band of the signal output by the connected upper stage of upper frequency converter, the signal output by the upper stage of upper frequency converter is filtered, the side frequency signal and the stray generated by the upper stage of upper frequency converter are filtered, and the useful signal in the band-pass band is reserved; the multistage up-converter and the filter therein finally convert the video signal input from the surface acoustic wave filter into a microwave band signal;
and inputting the microwave band signal obtained by frequency conversion into a microwave band-pass filter to realize the kHz ultra-narrow band-pass filtering of the microwave signal.
2. The single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect as claimed in claim 1, wherein: the single microwave quantum source comprises cold air, a first low-sidelobe corrugated horn and a second dipolar narrow-band microwave filter;
the cold air has cosmic background noise and atmospheric thermal noise;
the first low-sidelobe corrugated horn does not receive the heat radiation of the earth from the ground and receives the noise of cold air;
and the second extreme narrow-band microwave filter receives an output signal of the first low-sidelobe corrugated horn, and the bandwidth is in the kHz magnitude.
3. The single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect as claimed in claim 2, wherein: the single microwave quantum source also comprises a microwave signal source and a second low-sidelobe corrugated horn;
microwave signals generated by the microwave signal source are radiated by the second low-sidelobe corrugated horn aiming at the first low-sidelobe corrugated horn, and the free space between the second low-sidelobe corrugated horn and the first low-sidelobe corrugated horn realizes the simultaneous attenuation of signals and noise.
4. The single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect as claimed in claim 2, wherein: and the second ultra-narrow band microwave filter realizes 0.05-10 microwave quanta output per microsecond in band.
5. The single microwave quantum amplifier based on the ultra-narrow band filtering and the back-crossing effect as claimed in claim 3, wherein: the microwave power output by the first low-sidelobe corrugated horn is controlled by controlling the transmitting power of the microwave signal source, and then the single microwave quantum output with different numerical rates is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122733.1A CN110932791B (en) | 2019-11-16 | 2019-11-16 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122733.1A CN110932791B (en) | 2019-11-16 | 2019-11-16 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110932791A CN110932791A (en) | 2020-03-27 |
| CN110932791B true CN110932791B (en) | 2022-08-09 |
Family
ID=69853346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122733.1A Active CN110932791B (en) | 2019-11-16 | 2019-11-16 | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110932791B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9589236B1 (en) * | 2015-09-28 | 2017-03-07 | International Business Machines Corporation | High fidelity and high efficiency qubit readout scheme |
| 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 |
| CN110006541A (en) * | 2019-02-01 | 2019-07-12 | 中国科学院西安光学精密机械研究所 | A kind of microwave quantum association detection device and method |
| CN209542712U (en) * | 2018-11-16 | 2019-10-25 | 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4591859A (en) * | 1982-09-20 | 1986-05-27 | Raytheon Company | Radar transmitter |
-
2019
- 2019-11-16 CN CN201911122733.1A patent/CN110932791B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9589236B1 (en) * | 2015-09-28 | 2017-03-07 | International Business Machines Corporation | High fidelity and high efficiency qubit readout scheme |
| 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 |
| CN209542712U (en) * | 2018-11-16 | 2019-10-25 | 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 |
| CN110006541A (en) * | 2019-02-01 | 2019-07-12 | 中国科学院西安光学精密机械研究所 | A kind of microwave quantum association detection device and method |
Non-Patent Citations (3)
| Title |
|---|
| Influence of Josephson mixer equivalent circuit parameters on three-wave mixing intensity;Li Xiang等;《Chinese Journal of Quantum Electronics》;20160731;第33卷(第4期);全文 * |
| Microwave Photon Counter Based on Josephson Junctions;Chen,YF等;《PHYSICAL REVIEW LETTERS》;20111114;第107卷(第21期);全文 * |
| 弱测量问题的信息处理方法初探;胡卫东;《雷达学报》;20140708;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110932791A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101682304B (en) | Multiport amplifiers in communications satellites | |
| US6285863B1 (en) | System and method for providing automatic gain control with high dynamic range | |
| US7639998B1 (en) | RF receiver utilizing dynamic power management | |
| KR100765721B1 (en) | Portable installation for detecting passive intermodulation distortion signal and method thereof | |
| CN208401840U (en) | A kind of millimeter wave transceiving device | |
| CN109257064A (en) | A kind of double antenna RF front-end module | |
| CN210431394U (en) | Millimeter wave frequency converter | |
| CN110932791B (en) | Single microwave quantum amplifier based on ultra-narrow band filtering and back-crossing effect | |
| CN208386538U (en) | A kind of mm wave RF receive-transmit system | |
| CN210444257U (en) | Two-channel S-band down converter | |
| CN103001587A (en) | X-frequency-range extra-low inter-modulation frequency converter device of measurement and control system | |
| US7260363B1 (en) | Universal power amplifier | |
| CN111220854B (en) | Single microwave quantum inspection device based on second-order coherence measurement | |
| CN110927677A (en) | Broadband low-power-consumption four-in-one receiver | |
| CN110932696B (en) | Single microwave quantum source device based on low-sidelobe corrugated horn working at normal temperature | |
| KR101029598B1 (en) | Radar receiver | |
| CN212341452U (en) | Phased array weather radar and transceiving module thereof | |
| WO2021223121A1 (en) | Bidirectional multi-frequency amplifier, transceiver, control method and storage medium | |
| CN210246725U (en) | C-band receiving channel assembly | |
| KR100682714B1 (en) | Backward noise detection device for repeater and method thereof | |
| KR100728625B1 (en) | Mobile Communication Repeater for Marine and Controlling Method thereof | |
| CN206313737U (en) | L-band down converter | |
| KR100838287B1 (en) | Apparatus and method for gain control in broadband receiver | |
| CN210274043U (en) | VUC receiving module | |
| CN216216882U (en) | Unmanned aerial vehicle ad hoc network radio frequency front end circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |