CN110146162A - The device and method of real-time lock single photon intensity - Google Patents
The device and method of real-time lock single photon intensity Download PDFInfo
- Publication number
- CN110146162A CN110146162A CN201910540579.3A CN201910540579A CN110146162A CN 110146162 A CN110146162 A CN 110146162A CN 201910540579 A CN201910540579 A CN 201910540579A CN 110146162 A CN110146162 A CN 110146162A
- Authority
- CN
- China
- Prior art keywords
- intensity
- single photon
- photon
- signal
- output
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4413—Type
- G01J2001/442—Single-photon detection or photon counting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/444—Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of device and methods of real-time lock single photon intensity.Discrete single photon signal is converted into TTL pulse signal by single photon detection, photon counter carries out the analog voltage signal of output respective magnitudes after digital-to-analogue conversion to digital pulse signal, analog voltage signal and setting reference voltage are carried out the bias voltage control port that negative-feedback operation output error signal is loaded into intensity modulator by simulation proportional plus integral plus derivative controller, realize real-time lock single photon intensity to setting intensity by continuously adjusting single photon intensity then.The present invention can be effectively compressed the intensity fluctuation of single photon, solve the problems, such as that single photon intensity can not be locked and export with continuous tuning.The present invention has the features such as of simple structure and strong practicability, stability is high, tunable output, can be applied to the fields such as quantum communications, sensing detection, quantum imaging.
Description
Technical field
The invention belongs to laser technology field, the device and method of specifically a kind of real-time lock single photon intensity is based on
Single photon detection simultaneously combines digital-to-analogue conversion to convert analog voltage output for discrete single photon signal, micro- using simulation proportional integration
Analog voltage and reference voltage are carried out negative-feedback operation and obtain error signal by sub-controller, and error signal is loaded into intensity tune
Device processed carries out continuously adjusting single photon intensity, finally by single photon intensity real-time lock in setting intensity.
Background technique
Currently, accurate lock single photon intensity have in fields such as quantum communications, sensing detection, quantum imagings it is very important
Meaning.In quantum communications field, single photon is the carrier of quantum information transmission, and single photon intensity fluctuation can cause system at code rate
It drifts about, the safety of system is caused to reduce.In sensing detection field, single photon intensity fluctuation can reduce detection precision and
Sensitivity.In quantum imaging field, single photon intensity fluctuation can reduce imaging definition, cause imaging to thicken and cause information
It loses.So how to lock extensive concern of the single photon intensity by scientific research personnel.
Summary of the invention
It is an object of the present invention to provide a kind of device and methods of real-time lock single photon intensity, can be with real-time lock single photon
Intensity to setting intensity.
The present invention is achieved by the following technical scheme:
A kind of device of real-time lock single photon intensity, including laser, isolator, attenuator, intensity modulator, fiber strength
Beam splitter, single-photon detector, photon counter, simulation proportional plus integral plus derivative controller, oscillograph.
The laser output laser successively enters fiber strength beam splitting after isolator, attenuator, intensity modulator
First output end of device, the fiber strength beam splitter is connected with the input terminal of single-photon detector, the fiber strength beam splitting
The second output terminal output laser (be used for experimental study) of device, the output end of the single-photon detector and photon counter it is defeated
Enter end be connected, the output end of the photon counter respectively with simulation proportional plus integral plus derivative controller and oscillograph input terminal phase
Even, the output end of the simulation proportional plus integral plus derivative controller is connected with the bias voltage control end of intensity modulator.
The method for carrying out real-time lock single photon intensity using above-mentioned apparatus is as follows: laser exports continuous laser signal and passes through
It is exported after crossing isolator, the function of isolator is to prevent from the reflected light of way of escape optical device from entering laser to cause unstable, warp
The output light for crossing isolator enters attenuator decay intensity to single photon magnitude, and single photon signal discrete later enters intensity tune
Device processed transmission, laser signal transmission efficiency are controlled by the bias voltage of intensity modulator, the output light by intensity modulator into
Enter fiber strength beam splitter to be divided into two bundles, wherein light beam is used for experimental study, and another light beam enters single-photon detector, monochromatic light
Sub- detector measurement single photon signal is simultaneously converted to TTL pulse signal input photon counter, and photon counter is integrated in setting
Analog voltage is answered by digital-to-analogue conversion output phase in time, analog voltage amplitude is directly proportional to discrete light subnumber, then simulation electricity
It presses signal input simulation proportional plus integral plus derivative controller and carries out operation with simulation proportional plus integral plus derivative controller internal reference voltage
Afterwards, the bias voltage control port that simulation proportional plus integral plus derivative controller output error signal is loaded into intensity modulator adjusts single photon
The single photon signal measured is converted to TTL pulse signal and exported by efficiency of transmission, single-photon detector, and photon counter will count
Word pulse signal carries out digital-to-analogue conversion and exports new analog voltage, and simulation proportional plus integral plus derivative controller is electric by the new simulation measured
Pressure is compared analysis with reference voltage again and obtains new error signal, and new error signal is loaded into the bias control of intensity modulator
Port processed adjusts single photon efficiency of transmission again, and so constantly circulation continuously adjusts single photon intensity, can be strong by single photon
Real-time lock is spent in setting intensity.Simulation proportional plus integral plus derivative controller parameter is adjusted later, so that observed on oscillograph
Analog voltage fluctuating is minimum, illustrates single photon intensity fluctuation being compressed to minimum.And after locking single photon intensity, pass through adjusting
The tunable output of locking single photon intensity may be implemented in the reference voltage for simulating proportional plus integral plus derivative controller.
The present invention is based on single photon detections to be converted to TTL pulse signal for discrete single photon signal, passes through photon counter
Digital pulse signal is converted into corresponding analog voltage output, it is using simulation proportional plus integral plus derivative controller that measurement simulation is electric
Pressure carries out negative-feedback operation with preset reference voltage and obtains error signal, and error signal is loaded into intensity modulator
Bias port continuously adjusts single photon intensity, realizes the locking of closed loop single photon intensity, and the intensity for being effectively compressed single photon rises
Volt, and the tunable output of locking single photon intensity may be implemented.
The present invention has rational design, proposes a kind of device and method of real-time lock single photon intensity, and solving cannot be effective
The problem of compressing single photon intensity fluctuation and locking strength tunable output.The present invention has of simple structure and strong practicability, stablizes
Property it is high, the features such as tunable output.
Detailed description of the invention
Fig. 1 shows the connection schematic diagram of device of the present invention (dotted line represents optical signal, and solid line represents electric signal).
Fig. 2 indicates the test result that efficiency of transmission of the laser signal Jing Guo intensity modulator changes with bias voltage.
Fig. 3 indicates unlocked single photon intensity and locks the measurement result of single photon intensity.
In figure: 1- laser, 2- isolator, 3- attenuator, 4- intensity modulator, 5- fiber strength beam splitter, 6- monochromatic light
Sub- detector, 7- photon counter, 8- simulate proportional plus integral plus derivative controller, 9- oscillograph.
Specific embodiment
Specific embodiments of the present invention are described in detail with reference to the accompanying drawing.
A kind of device of real-time lock single photon intensity, including laser 1, isolator 2(THORLABS, IO-G-1550),
Attenuator 3(THORLABS, VOA50PM-APC), intensity modulator 4(CODEON, Mach-10), fiber strength beam splitter 5
(THORLABS, PN1550R5A1), single-photon detector 6(Princeton Lightwave, PGA), photon counter 7(SRS,
SR400), simulate proportional plus integral plus derivative controller 8(SRS, SIM960), oscillograph 9(YOKOGAWA, DLM2054).
As shown in Figure 1, laser 1, which exports 1550nm linearly polarized laser, successively passes through isolator 2, attenuator 3, intensity modulated
Enter 50:50 fiber strength beam splitter 5 after device 4, the first output end of fiber strength beam splitter 5 is defeated with single-photon detector 6
Enter end to be connected, the second output terminal output laser of fiber strength beam splitter 5 is used for experimental study, the output of single-photon detector 6
End be connected with the input terminal of photon counter 7, the output end of photon counter 7 respectively with simulate proportional plus integral plus derivative controller 8
It is connected with the input terminal of oscillograph 9, simulates the output end of proportional plus integral plus derivative controller 8 and the bias voltage control of intensity modulator 4
End is connected.
As follows using the method that above-mentioned apparatus carries out real-time lock single photon intensity: laser 1 exports continuous linear polarization and swashs
Optical signal exports after isolator 2, and the function of isolator is to prevent from the reflected light of way of escape optical device from entering laser to cause
It is unstable, enter 3 decay intensity of attenuator to single photon magnitude by the output light of isolator 2, average photon number is about 0.01,
Single photon signal discrete later enter intensity modulator 4 transmission, laser signal transmission efficiency by intensity modulator 4 biased electrical
Voltage-controlled system, Fig. 2 indicate the test result that efficiency of transmission of the laser signal Jing Guo intensity modulator 4 changes with bias voltage, selection
It is locked in the linear operating region of intensity modulator 4, the output light by intensity modulator 4 enters fiber strength beam splitting
Device 5 is divided into two bundles, and wherein light beam is used for experimental study, and another light beam enters single-photon detector 6, and single-photon detector 6 is surveyed
Amount single photon signal is simultaneously converted to TTL pulse signal, and pulse number is directly proportional to input light intensity, and digital pulse signal enters later
Photon counter 7, photon counter 7 to digit pulse statistical counting and pass through digital-to-analogue conversion output phase within the setting time of integration
The analog voltage answered, output analog voltage amplitude is directly proportional to discrete light subnumber, and analog voltage signal inputs simulation ratio later
Integral-derivative controller 8 is simultaneously compared operation generation error signal with simulation 8 internal reference voltage of proportional plus integral plus derivative controller.
The bias voltage for adjusting simulation proportional plus integral plus derivative controller 8 is -2.4V, and the error signal for exporting it is in intensity modulator
The efficiency of transmission that single photon is adjusted in 4 linear operating region is simulated if analog voltage amplitude is greater than reference voltage amplitude
Proportional plus integral plus derivative controller 8, which reduces error signal amplitude, makes single photon efficiency of transmission be lower；If analog voltage amplitude is less than
Reference voltage amplitude, then simulating the increase of proportional plus integral plus derivative controller 8 error signal amplitude makes single photon efficiency of transmission become larger, single
The single photon signal measured is converted to the output of TTL pulse signal by photon detector 6, and photon counter 7 believes digit pulse
It number carries out digital-to-analogue conversion and exports new analog voltage, simulation proportional plus integral plus derivative controller 8 is by the new analog voltage measured and ginseng
It examines voltage and is compared the new error signal of analysis acquisition again, new error signal is loaded into the bias voltage control end of intensity modulator 4
Mouth adjusts single photon intensity again, and so constantly circulating repetition can then lock single photon intensity to setting intensity.Lead to after locking
Simulation 8 parameter of proportional plus integral plus derivative controller is overregulated, the minimum so that analog voltage observed on oscillograph 9 rises and falls,
The intensity fluctuation of single photon is compressed to minimum.Single photon intensity to be locked is 600k in experiment, then setting ratio integral differential
The reference voltage of device is 0.6V.Fig. 3 indicates unlocked single photon intensity and locks the measurement result of single photon intensity, it can be seen that
Since external environment random perturbation and equipment imperfections etc. cause single photon intensity in random random change when being not carried out intensity locking
Change, when executing negative feedback closed loop locking, feedback system can be effectively compressed the intensity fluctuation of single photon, the monochromatic light in 1800s
Sub- intensity fluctuation is less than 4%.
The present invention is based on single photon detections to be converted to TTL pulse signal for discrete single photon signal, passes through photon counter
Digital pulse signal is converted to analog voltage to export, using simulation proportional plus integral plus derivative controller by measurement analog voltage and in advance
The reference voltage first set carries out negative-feedback operation and obtains error signal, and error signal is loaded into the bias terminal of intensity modulator
Mouth continuously adjusts the efficiency of transmission of single photon, realizes the locking of closed loop single photon intensity, and the intensity for being effectively compressed single photon rises
Volt, and the tunable output of locking single photon intensity may be implemented.
The present invention has the features such as of simple structure and strong practicability, stability is high, tunable output, can be applied to quantum
The fields such as communication, relevant detection, quantum imaging.
It should be pointed out that for the those skilled in the art of the art, without departing from the principle of the present invention,
Several improvement and application can also be made, these are improved and application is also considered as protection scope of the present invention.
Claims (2)
1. a kind of device of real-time lock single photon intensity, it is characterised in that: including laser (1), isolator (2), attenuator
(3), intensity modulator (4), fiber strength beam splitter (5), single-photon detector (6), photon counter (7), simulation ratio product
Divide derivative controller (8), oscillograph (9)；
Laser (1) the output laser successively enters optical fiber after isolator (2), attenuator (3), intensity modulator (4)
First output end of intensity beam splitter (5), the fiber strength beam splitter (5) is connected with the input terminal of single-photon detector (6),
The second output terminal of the fiber strength beam splitter (5) exports laser, the output end and photon meter of the single-photon detector (6)
Number device (7) input terminal be connected, the output end of the photon counter (7) respectively with simulation proportional plus integral plus derivative controller (8)
It is connected with the input terminal of oscillograph (9), the output end of simulation proportional plus integral plus derivative controller (8) and intensity modulator (4)
Bias voltage control end be connected.
2. a kind of method of real-time lock single photon intensity, it is characterised in that: laser (1) export continuous laser signal pass through every
It is exported afterwards from device (2), enters attenuator (3) decay intensity to single photon magnitude by the output light of isolator (2), it is discrete later
Single photon signal enter intensity modulator (4) transmission, the output light by intensity modulator (4) enters fiber strength beam splitter
(5) it is divided into two bundles, wherein light beam is used for experimental study, and another light beam enters single-photon detector (6), single-photon detector
(6) it measures single photon signal and is converted to TTL pulse signal input photon counter (7), photon counter (7) is integrated in setting
Analog voltage is answered by digital-to-analogue conversion output phase in time, analog voltage amplitude is directly proportional to discrete light subnumber, then simulation electricity
Press signal input simulation proportional plus integral plus derivative controller (8) and with simulation proportional plus integral plus derivative controller (8) internal reference voltage into
After row operation, simulation proportional plus integral plus derivative controller (8) output error signal is loaded into the bias voltage control end of intensity modulator (4)
Mouthful single photon efficiency of transmission is adjusted, it is defeated that the single photon signal measured is converted to TTL pulse signal by single-photon detector (6)
Out, digital pulse signal is carried out digital-to-analogue conversion and exports new analog voltage by photon counter (7), simulates PID control parameter
The new analog voltage measured and reference voltage are compared analysis again and obtain new error signal by device (8), by new error signal
The bias voltage control port for being loaded into intensity modulator (4) adjusts single photon efficiency of transmission again, and so constantly circulation continuously adjusts
Single photon intensity, can be by single photon intensity real-time lock in setting intensity；Simulation PID control parameter is adjusted later
Device (8) parameter, the minimum so that analog voltage observed on oscillograph (9) rises and falls, illustrates for single photon intensity fluctuation to be compressed to
It is minimum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540579.3A CN110146162B (en) | 2019-06-21 | 2019-06-21 | Device and method for locking single photon intensity in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540579.3A CN110146162B (en) | 2019-06-21 | 2019-06-21 | Device and method for locking single photon intensity in real time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110146162A true CN110146162A (en) | 2019-08-20 |
| CN110146162B CN110146162B (en) | 2024-04-05 |
Family
ID=67596228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910540579.3A Active CN110146162B (en) | 2019-06-21 | 2019-06-21 | Device and method for locking single photon intensity in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110146162B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111327366A (en) * | 2020-04-17 | 2020-06-23 | 忻州师范学院 | System and method for quickly locking minimum bias point of electro-optic intensity modulator |
| CN111679459A (en) * | 2020-06-28 | 2020-09-18 | 合肥师范学院 | Proportion-adjustable single photon beam splitter based on cold atom storage |
| CN111896096A (en) * | 2020-06-30 | 2020-11-06 | 太原理工大学 | Device for accurately measuring mechanical vibration by utilizing photon counter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9414465D0 (en) * | 1994-07-18 | 1994-09-07 | Lawrence M | A method of stabilising or locking to a reference the output intensity and or output frequency of an optical light source |
| KR20010076611A (en) * | 2000-01-27 | 2001-08-16 | 오길록 | Opto-electronic Hybrid Apparatus and Method for Optical Clock Recovery |
| CN105973277A (en) * | 2016-05-03 | 2016-09-28 | 华南师范大学 | Realization apparatus and method for distributed optical fiber sensing system based on single photon detection |
| CN109193323A (en) * | 2018-11-16 | 2019-01-11 | 忻州师范学院 | Lock the device and method of optical communicating waveband twin-laser frequency |
| CN209820629U (en) * | 2019-06-21 | 2019-12-20 | 忻州师范学院 | Device for locking single photon intensity in real time |
-
2019
- 2019-06-21 CN CN201910540579.3A patent/CN110146162B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9414465D0 (en) * | 1994-07-18 | 1994-09-07 | Lawrence M | A method of stabilising or locking to a reference the output intensity and or output frequency of an optical light source |
| KR20010076611A (en) * | 2000-01-27 | 2001-08-16 | 오길록 | Opto-electronic Hybrid Apparatus and Method for Optical Clock Recovery |
| CN105973277A (en) * | 2016-05-03 | 2016-09-28 | 华南师范大学 | Realization apparatus and method for distributed optical fiber sensing system based on single photon detection |
| CN109193323A (en) * | 2018-11-16 | 2019-01-11 | 忻州师范学院 | Lock the device and method of optical communicating waveband twin-laser frequency |
| CN209820629U (en) * | 2019-06-21 | 2019-12-20 | 忻州师范学院 | Device for locking single photon intensity in real time |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111327366A (en) * | 2020-04-17 | 2020-06-23 | 忻州师范学院 | System and method for quickly locking minimum bias point of electro-optic intensity modulator |
| CN111327366B (en) * | 2020-04-17 | 2024-04-12 | 忻州师范学院 | System and method for fast locking minimum bias point of electro-optic intensity modulator |
| CN111679459A (en) * | 2020-06-28 | 2020-09-18 | 合肥师范学院 | Proportion-adjustable single photon beam splitter based on cold atom storage |
| CN111679459B (en) * | 2020-06-28 | 2023-04-25 | 合肥师范学院 | Proportion-adjustable single photon beam splitter based on cold atom storage |
| CN111896096A (en) * | 2020-06-30 | 2020-11-06 | 太原理工大学 | Device for accurately measuring mechanical vibration by utilizing photon counter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110146162B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110146162A (en) | The device and method of real-time lock single photon intensity | |
| Chung et al. | Ambiguity of ultrashort pulse shapes retrieved from the intensity autocorrelation and the power spectrum | |
| CN109388374B (en) | Random number generation method based on chaos amplification quantum noise | |
| DE10202759A1 (en) | Real-time wavelength calibration for scanned lasers | |
| CN105428990A (en) | Certainty soliton mode locking method for Kerr optical frequency comb in optical microcavity | |
| CN110851111B (en) | High-safety source-independent quantum random number generation device and method | |
| CN109346913A (en) | A kind of round trip flight second laser optics frequency comb locking device based on fibre delay line | |
| CN103575511B (en) | The measurement apparatus of a kind of relative intensity noise of laser and method | |
| CN105006727A (en) | Dual-channel microwave frequency comb generator based on optoelectronic feedback VCSEL | |
| CN108075886A (en) | A kind of automatic timing adjusting method and device for quantum key distribution system | |
| Giacomelli et al. | Optical networks as complex lasers | |
| CN204885802U (en) | Double - circuit microwave frequency comb generator based on photoelectricity feedback VCSEL | |
| Masud et al. | Highly sensitive microsensor based on absorption spectroscopy: Design considerations for optical receiver | |
| CN109921893A (en) | A kind of system and method enhancing chaotic laser light randomness | |
| CN104516715A (en) | Tbps all-optical parallel true random number generator with extra-strong scalability | |
| CN209820629U (en) | Device for locking single photon intensity in real time | |
| Okubo et al. | Frequency measurements of the 2 ν 3 A 1-ν 3 band transitions of methane in comb-referenced infrared-infrared double-resonance spectroscopy | |
| Yang et al. | Spectrogram of Carrier Transient in Semiconductor Optical Amplifier With Dispersive Pump-Probe Spectroscopy | |
| Wang et al. | High-speed tomography of time-bin-entangled photons using a single-measurement setting | |
| CN112490843B (en) | Device and method for generating broadband noise source based on quantum dot micro-column laser | |
| CN211959218U (en) | Photoelectric quantization device based on light injection semiconductor laser | |
| CN104409960A (en) | Automatic laser frequency stabilizing device and method | |
| CN108494494A (en) | The method of real-time lock single photon phase | |
| Wang et al. | Extreme events generated in microcavity lasers and their predictions by reservoir computing | |
| CN104461456A (en) | Tbps all-optical parallel true random number producing method having ultra-strong scalability |
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 |