CN109029741A - Based on light quantum Quadrant detector fully differential equilibrium random number generation method - Google Patents
Based on light quantum Quadrant detector fully differential equilibrium random number generation method Download PDFInfo
- Publication number
- CN109029741A CN109029741A CN201810733009.1A CN201810733009A CN109029741A CN 109029741 A CN109029741 A CN 109029741A CN 201810733009 A CN201810733009 A CN 201810733009A CN 109029741 A CN109029741 A CN 109029741A
- Authority
- CN
- China
- Prior art keywords
- signal
- random number
- quantum
- quadrant
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000003321 amplification Effects 0.000 claims abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000000284 extract Substances 0.000 claims abstract description 9
- 230000008030 elimination Effects 0.000 claims abstract description 6
- 238000003379 elimination reaction Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000001228 spectrum Methods 0.000 claims description 9
- 230000005622 photoelectricity Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation 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
- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
Abstract
One kind being based on light quantum Quadrant detector fully differential equilibrium random number generation method, and using the LED of matching wavelength as light source, method by 4 quadrant detector diagonal pixel and connecing extracts two-way photo-signal, realizes that two-way balanced homodyne detects；Two symmetrical preamplifiers carry out fully differential amplification into two-way current signal respectively, eliminate the electrical noise generated in common mode interference signal and the further classical optical noise and level-one amplification process of elimination low-frequency range.The quantum random number noise generated through processing, meets Gaussian Profile, true random number sequence can be obtained in Gaussian Profile binaryzation.Integrated level is high, improves signal quality, reduces product cost；Photo-signal is converted through IV, reverse phase is amplified, fully differential processing, and the quantum random number sequence of high quality is generated after high frequency modulated demodulation, FIR filtering, the direct current that disappears, distribution process.The equipment such as beam splitter, optical fiber are saved, structure is more simple.
Description
Technical field
The present invention relates to IPC classification G06F7/58 random number or pseudorandom number generator technologies, belong to field of cryptography, especially
It is based on light quantum Quadrant detector fully differential equilibrium random number generation method.
Background technique
Vacuum quantum random number, refers to uncertain using the quantization of vacuum state fluctuation, it is acquired, amplify and
Output generates random data stream.And the shot noise (shot noise) of photodetector is then to reflect rising for light quantum
It falls, therefore can be by extracting the shot noise of photodetector, amplification, identifying output realization in technology realization.
The principle that shot noise is extracted in balanced homodyne detection 1 beam light is usually divided into 2 tunnels and be incident on respectively 2 it is complete same
Photodetector on, then by two-way photoelectric current difference, and differentiated signal is amplified, with extract shot noise electricity
Stream.
In classical electron or optics, shot noise refers to the reading noise in experimental observation.When the particle being observed
When quantity is lacked to a certain extent, the statistic fluctuation of observation data can be caused, probability meets Poisson distribution.In quantum optices
Vacuum shot noise mechanism with it is not identical in classical optics, its essence is the systems of the observation data caused due to vacuum fluctuation
Count fluctuation.
The system principle of vacuum quantum random number generator is as shown in Fig. 1.
Patent document is less for correlative technology field.
Shanghai Communications University provides a kind of amount based on amplification vacuum state in Chinese patent application CN 103793198A
Sub- randomizer, comprising: light path module and circuit module；Wherein, the output end of the light path module connects the circuit
The input terminal of module.The light path module includes laser, beam splitter, balanced homodyne detector, vacuum state generator and light
Amplifier；Wherein, the output end of the vacuum state generator connects the input terminal of the image intensifer；The image intensifer it is defeated
Outlet is connected with an input terminal of the beam splitter；The output end of the laser connects another input of the beam splitter
End；The output end of the beam splitter connects the input terminal of the balanced homodyne detector.It is produced by the vacuum state after measuring and amplifying
It gives birth to quantum random number and deviation processing is carried out using pseudo-noise code and original bit exclusive or mode, to generate higher speed
Rate, the better true random number of randomness.
Tsinghua University provides a kind of quantum random number generator and amount in Chinese patent application 201611232731.4
Sub- random digit generation method.Method therein includes: the compression set transformation of quantum states that sends stochastic source for two-dimentional quantum state
And it is sent to measuring device；Measuring device randomly uses one group in preset three groups of measurement bases according to preset measurement probability
Measurement base two-dimentional quantum state received to institute measures, and obtains measurement result and is sent to assessment device；Device is assessed by institute
The measurement result for using random number measurement base to obtain received is estimated as initial random number, and according to the measurement result received
The averag density matrix for calculating each quantum state that stochastic source is sent, further according to averag density matrix, calculate initial random number with
Machine；It according to the randomness for the initial random number being calculated, amplifies, obtains final random number.To the no vacation in source
Under conditions of if, realizes the quantum random number generator for being originated from detection, generate required quantum random number.
China Science & Technology University discloses a kind of unbiased true random number generation in Chinese patent application CN 104216678A
Device, including APD module, avalanche signal screen shaping amplification module, time-to-digital converter module and coder module, by institute
The electronics pulse for stating the generation of APD module is encoded, and random sequence is generated.And a kind of generation method of unbiased true random number
And a kind of unbiased real random number generator chip.The random number sequence of generation is not necessarily to lead to by complicated last handling process
Cross random statistical detection.Device and method have very high integrated level, can be encapsulated into chip-scale using integrated circuit technology
Device.Can work without light source, the light quantum that can also be generated by optical fiber or free space coupling external light source adjust with
The formation efficiency of machine number.Therefore, there is good compatibility for environment, without particular job conditions such as low temperature, tight shadings
It can work normally.
Widely used polynary non-imaged photodetector is mostly four-quadrant photo detector part in photoelectric detecting system.
Four-quadrant photo detector is realized by the way of the processing of discrete optics combination electrical signal, is that four performances are complete
Identical photodiode requires photoelectric detector made of arrangement according to rectangular co-ordinate, is usually used in laser guidance or laser quasi
In straight.It includes silicon photocell and four-quadrant photodiode, such as four-quadrant PIN photodiode, four-quadrant avalanche optoelectronic
Diode etc..Four-quadrant photo detector signal processing system is mainly used using peak detection circuit and peak holding circuit as core
The pulse signal of the heart broadens and acquisition mode works, and under the irradiation of target-designator pulse laser, four-quadrant photoelectricity is visited
It surveys device and exports narrow pulse electrical signals, narrow pulse electrical signals meet the amplitude and noise of data acquisition by preposition amplification and filtering
Than requiring.Peak holding circuit broadens narrow pulse electrical signals, to mitigate the bandwidth limitation of analog-digital converter.Peak detection
The effect of circuit is the peak value for detecting narrow pulse electrical signals, provides the accurate peak value sampling moment for analog-digital converter.At signal
Control discharge circuit is in peak holding circuit after reason unit receives the pulse signal amplitude digital quantity that analog-digital converter exports
Storage capacitor discharge, then pulse signal amplitude digital quantity is calculated and is handled, obtain spot center position letter
It ceases and exports to upper computer control system.Since peak holding circuit charges come temporarily to storage capacitor using trsanscondutance amplifier
Narrow pulse electrical signals peak value is deposited with stretched pulse width, so storage capacitor becomes the critical component for influencing system performance.Although
In this way, but the charge leakage due to storage capacitor and discrete capacitor parameter inconsistency, lead to collected laser pulse
Distorted signals reduces system accuracy.Further, since there are biggish individual differences for the characteristic that varies with temperature of discrete capacitor parameter
The opposite sex causes the laser pulse signal processing gain in four channels inconsistent, and spot center positional accuracy measurement is vulnerable to environment temperature
Degree influences.
Summary of the invention
The object of the present invention is to provide one kind to be based on light quantum Quadrant detector fully differential equilibrium random number generation method.
Quantum random number method for generation according to the present invention realizes to include: LED light source, four-quadrant in the device of this method
Photodetector, preamplifier, fully-differential amplifier, multiplier, low-pass filter, ADC analog-digital converter and FPGA
Chip, wherein LED light source face installs four-quadrant photo detector, before connecting two symmetrically by four-quadrant photo detector
Operational amplifier is set, this two symmetrical preamplifiers connect multiplier by fully-differential amplifier, then, further
Be sequentially connected after low-pass filter, ADC analog-digital converter QRNG sequence connected by fpga chip；LED light source generates light quantity
Son, four-quadrant photo detector receive light quantum and are converted into current signal, and two symmetrical preamplifiers are electric current
Signal is converted into voltage signal and then extracts high-frequency signal and amplify, and two paths of signals is done difference and removed altogether by fully-differential amplifier
Mould interference, multiplier are modulated aforementioned signal using high frequency sinusoidal signal, and low-pass filter carries out modulated signal
Demodulation, ADC analog-digital converter acquire aforementioned signal, and QRNG sequence completes signal output；The fpga chip is filtered comprising FIR
Device, disappear DC Module and distribution process module；Aforementioned signal is post-processed to obtain quantum random sequence.
The LED light source operating current need to be greater than 10mA, and far-field emission angle need to be greater than 6 degree.
The LED light source issues the light that central wavelength is 870nm wave band, is coupled on four-quadrant photo detector, passes through
Method four-quadrant photo detector diagonal pixel and connect obtains two-way current signal, to adjust the angle of LED light irradiation at this time
Degree, so that the photoelectric current of two paths of signals is equal.
It include radial successively tetra- picture dots of equally distributed A, B, C, D, four-quadrant on the four-quadrant photo detector
Photodetector is diagonal picture dot AC, BD and does joint reason respectively, to reduce to four when extracting two-way photo-signal
Pixel coherence request, and when optical light source and detector installation center point slightly has deviation improve output signal homogeneity, make
The photoelectric current for obtaining two paths of signals is equal.
It is described to handle the quantum random number noise generated through fpga chip, meet Gaussian Profile, and signal falls in Gauss point
The probability of cloth two sides is identical and independent, true random number sequence can be obtained in Gaussian Profile binaryzation, what is finally exported is true
Random sequence.
Described two symmetrical preamplifiers are converted to voltage letter into IV is carried out respectively to two-way current signal
Number, existing circuit noise and classical optical noise in signal, also there is quantum noise at this time, wherein circuit noise and classical optical noise master
If low frequency signal, quantum noise is mainly high-frequency signal, extracts high-frequency signal through high-pass filter, the signal extracted point
It does not amplify, then, the amplified two paths of signals carries out differential amplification through fully-differential amplifier, eliminates common mode interference signal
And the electrical noise further generated in the classical optical noise and level-one amplification process of elimination low-frequency range.
The FIR filter quantum noise signal into FPGA, first passes through a 100 rank FIR low pass filters, so
Afterwards, disappear DC Module through FIR filter treated that quantum noise subtracts the expectation of quantum noise signal eliminates direct current component；
The radio-frequency component in signal is eliminated further across the DC Module that disappears, FIR filter is equalization filter；Then pass through one
FIR filter is uniform by the frequency spectrum processing of its signal, and whether a pair of the frequency spectrum random number index generated be most important, and signal is logical
After crossing FIR filter, in the expectation by calculating all averages, the expected signal for meeting Gaussian Profile is obtained, and then
Random number sequence is generated by distribution process module.
Advantages of the present invention and effect: using the narrow of high-speed-differential analog-digital converter acquisition four-quadrant photo detector output
Pulse electrical signal, eliminates the distorted signals of conventional peak holding circuit introducing, while eliminating discrete capacitor parameter with temperature
The individual difference of variation, two symmetrical preamplifiers carry out fully differential amplification into two-way current signal respectively,
Eliminate the electrical noise generated in common mode interference signal and the further classical optical noise and level-one amplification process of elimination low-frequency range.Through
The quantum random number noise generated is handled, meets Gaussian Profile, true random number sequence is can be obtained into Gaussian Profile binaryzation.Collection
It is high at degree, meanwhile, when the variation range of ambient temperature is larger, the impacted very little of system accuracy.
Detailed description of the invention
Fig. 1 is the system principle schematic diagram of vacuum quantum random number generator in the present invention.
Fig. 2 is whole design structural schematic diagram in the embodiment of the present invention 1.
Fig. 3 is four-quadrant photo detector connection schematic diagram in the embodiment of the present invention 1.
Fig. 4 is FIR filter original signal spectrum schematic diagram in the embodiment of the present invention 1.
Fig. 5 is in the embodiment of the present invention 1 by the uniform spectrum diagram after FIR filter.
Fig. 6 is noise data Gaussian Profile situation schematic diagram in the embodiment of the present invention 1.
Specific embodiment
The principle of the invention is, uses four quadrant photoelectric detector as the receiving portion of optical module, designs photoelectricity and visit
It surveys device and receives and dispatches innovation scheme, the requirement of reasonable product economy cost control passes through four using the LED of matching wavelength as light source
Method quadrant detector diagonal pixel and connect extracts two-way photo-signal, realizes the detection of two-way balanced homodyne；Meanwhile if
Data Post module is set, post-processing module is solidificated in fpga chip, at FIR filter, disappear DC Module and distribution
Manage module.Wherein, FPGA (Field-Programmable Gate Array), i.e. field programmable gate array, it be
The product further developed on the basis of the programming devices such as PAL, GAL, CPLD.It is led as specific integrated circuit (ASIC)
One of domain semi-custom circuit and occur, not only solved the deficiency of custom circuit, but also overcome original programming device door
The limited disadvantage of circuit number.
In the present invention: as shown in Fig. 2, comprising: LED light source, for generating light quantum；Four-quadrant photo detector is used
In reception light quantum and it is converted into current signal；Two symmetrical preamplifiers, for current signal to be converted into electricity
Then pressure signal extracts high-frequency signal and amplifies；Fully-differential amplifier, for two paths of signals to be done difference and removes common mode interference；
Multiplier, for signal and sinusoidal signal to be modulated；Low-pass filter, for modulated signal to be demodulated；ADC
Analog-digital converter, for acquiring aforementioned signal；Fpga chip post-processes aforementioned signal to obtain random sequence.
Workflow: LED light source issues light quantum, receives light quantum by four-quadrant photo detector and is converted into electric current letter
Number, signal is multiplied after IV conversion, reverse phase amplification, fully differential with a high frequency sinusoidal signal, then low-pass filtered completion signal
Modulation /demodulation；Sampling is completed by ADC again to send to FPGA, is generated after completing FIR filtering, the direct current that disappears, distribution process by FPGA
Quantum random number.
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1:
Specific implementation step includes:
As shown in Fig. 3, include radial successively equally distributed A, B, C, D tetra- on four-quadrant photo detector as
Member is diagonal picture dot AC, BD to four-quadrant photo detector and does joint reason respectively, to extract two-way photo-signal
When, it reduces to four pixel coherence requests, and output letter is improved when optical light source and detector installation center point slightly has deviation
Number homogeneity.Four-quadrant photo detector passes through diagonal pixel and connects；LED light issues the light that central wavelength is 870nm wave band,
It is coupled on four-quadrant photo detector, the method by four-quadrant photo detector diagonal pixel and connecing obtains two-way electric current
Signal will adjust the angle of LED light irradiation, so that the photoelectric current of two paths of signals is equal at this time.
Two symmetrical preamplifiers are converted to voltage signal into carrying out IV respectively to two-way current signal, this
When signal in existing circuit noise and classical optical noise, also have quantum noise, wherein circuit noise and classical optical noise are mainly
Low frequency signal, quantum noise are mainly high-frequency signal, extract high-frequency signal through high-pass filter, the signal extracted respectively into
Row amplification, then, the amplified two paths of signals carries out differential amplification through fully-differential amplifier, eliminates common mode interference signal and goes forward side by side
The electrical noise generated in the classical optical noise and level-one amplification process of one step elimination low-frequency range.
Aforementioned signal is modulated by multiplier using the sine wave of high-frequency signal frequency, further to eliminate low frequency
The classical optical noise and electrical noise of section centered on sine wave signal frequency, acquire the letter of its ± 10MHz to improve signal-to-noise ratio
Number.Then demodulation is carried out to the signal after aforementioned modulation using the low-pass filter of 10MHz and obtains quantum noise signal, used
The ADC of 40MHz carries out sample conversion to quantum noise signal and is sent into FPGA progress data processing.
In aforementioned, LED light source operating current need to be greater than 10mA, and far-field emission angle need to be greater than 6 degree.
In aforementioned, into the FIR filter quantum noise signal in FPGA, a 100 rank FIR low-pass filtering are first passed through
Device, then, treated that quantum noise subtracts the expectation of quantum noise signal eliminates direct current through FIR filter for the DC Module that disappears
Part.The radio-frequency component in signal is eliminated further across the DC Module that disappears, FIR filter is equalization filter, such as 4 institute of attached drawing
Show；Then by a FIR filter that the frequency spectrum processing of its signal is uniform, whether a pair of random number index generated of frequency spectrum
It is most important, after signal passes through FIR filter, in the expectation by calculating all averages, obtains the expected Gauss that meets and divide
The signal of cloth generates random number sequence followed by distribution process module, as shown in Fig. 5.
Since noise gain of the four-quadrant photo detector to different frequency is different, amplifier, true difference, multiplier are equally
It can not accomplish that the gain of each Frequency point keeps uniform, this leads to the frequency spectrum of the collected signal of final ADC and injustice.
As shown in Fig. 6, the quantum random number noise generated is handled through fpga chip, meets Gaussian Profile, and signal is fallen
Probability in Gaussian Profile two sides is identical and independent, and true random number sequence can be obtained in Gaussian Profile binaryzation, finally exports
Obtained true random sequence.
In the embodiment of the present invention, use four-quadrant photo detector as the receiver of opticator.It is visited by four-quadrant
The method surveying the diagonal pixel of device and connecing, extracts two-way photo-signal, not only reduces to four pixel coherence requests, Er Qie
Optical light source and detector installation center point improves the homogeneity of output signal when slightly having deviation.The quantum random number signal of output, can
It, can also be using the communication interface standard of SPI protocol or other more clock types to use usb protocol.Two-way photoelectricity is flowed into
The preamplifier of row calculation process answers height consistent with all resistance that fully-differential amplifier is related to, capacitance parameter, with
So that two paths of signals balance is uniform, is handled by differential amplification and curb common mode interference, to obtain the quantum noise of high quality
Signal.
In the embodiment of the present invention, the equipment such as beam splitter, optical fiber are eliminated, structure is more simple, and avoids these and set
Standby influence of error for random number itself.Using silicon substrate four-quadrant photo detector, compares and use APD avalanche photodide
Randomizer have lower cost.
Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above embodiments, and various changes made within the protection scope of the independent claims of the invention are at this
In the protection scope of invention.
Claims (7)
1. being based on light quantum Quadrant detector fully differential equilibrium random number generation method, which is characterized in that LED light source issues light quantity
Son receives light quantum by four-quadrant photo detector and is converted into current signal, and signal is converted through IV, reverse phase is amplified, fully differential
It is multiplied afterwards with a high frequency sinusoidal signal, then the low-pass filtered modulation /demodulation for completing signal；Again by ADC complete sampling send to
FPGA generates quantum random number after completing FIR filtering, the direct current that disappears, distribution process by FPGA；It realizes and is wrapped in the device of this method
It includes: LED light source, four-quadrant photo detector, preamplifier, fully-differential amplifier, multiplier, low-pass filter, ADC
Analog-digital converter and fpga chip, wherein LED light source face installs four-quadrant photo detector, by four-quadrant photo detector
Two symmetrical preamplifiers are connected, this two symmetrical preamplifiers are multiplied by fully-differential amplifier connection
Then musical instruments used in a Buddhist or Taoist mass is further sequentially connected after low-pass filter, ADC analog-digital converter and connects QRNG sequence by fpga chip；
LED light source generates light quantum, and four-quadrant photo detector receives light quantum and is converted into current signal, two symmetrical preposition fortune
It calculates amplifier current signal is converted into voltage signal then to extract high-frequency signal and to amplify, fully-differential amplifier is by two paths of signals
It does difference and removes common mode interference, multiplier is modulated aforementioned signal using high frequency sinusoidal signal, and low-pass filter is tune
Signal after system is demodulated, and ADC analog-digital converter acquires aforementioned signal, and QRNG sequence completes signal output；The FPGA core
Piece, comprising FIR filter, disappear DC Module and distribution process module；Aforementioned signal is post-processed to obtain quantum stochastic ordering
Column.
2. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
In LED light source operating current need to be greater than 10mA, and far-field emission angle need to be greater than 6 degree.
3. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
In LED light source issues the light that central wavelength is 870nm wave band, is coupled on four-quadrant photo detector, passes through four-quadrant photoelectricity
Method detector diagonal pixel and connect obtains two-way current signal, the angle of LED light irradiation is adjusted at this time, so that two-way
The photoelectric current of signal is equal.
4. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
In including radial successively tetra- picture dots of equally distributed A, B, C, D, four-quadrant photo detector on four-quadrant photo detector
It is diagonal picture dot AC, BD and does joint reason respectively, to reduce to four pixel consistency when extracting two-way photo-signal
It is required that and when optical light source and detector installation center point slightly has deviation improve output signal homogeneity so that two paths of signals
Photoelectric current it is equal.
5. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
Voltage signal is converted into carrying out IV respectively to two-way current signal in, two symmetrical preamplifiers, is believed at this time
Existing circuit noise and classical optical noise, also there is quantum noise in number, and wherein circuit noise and classical optical noise are mainly low frequency
Signal, quantum noise are mainly high-frequency signal, extract high-frequency signal through high-pass filter, and the signal extracted is put respectively
Greatly, then, the amplified two paths of signals carries out differential amplification through fully-differential amplifier, and elimination common mode interference signal is simultaneously further
Eliminate the electrical noise generated in the classical optical noise and level-one amplification process of low-frequency range.
6. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
In the quantum random number noise generated through fpga chip processing meets Gaussian Profile, and signal falls in the general of Gaussian Profile two sides
Rate is identical and independent, true random number sequence can be obtained in Gaussian Profile binaryzation, the true random sequence finally exported.
7. being based on light quantum Quadrant detector fully differential equilibrium random number generation method as described in claim 1, feature exists
In first passing through a 100 rank FIR low pass filters, then, disappear direct current into the FIR filter quantum noise signal in FPGA
Treated that quantum noise subtracts the expectation of quantum noise signal eliminates direct current component through FIR filter for module；Further pass through
The radio-frequency component in the DC Module elimination signal that disappears is crossed, FIR filter is equalization filter；Then pass through a FIR filter
The frequency spectrum processing of its signal is uniform, and whether a pair of the frequency spectrum random number index generated be most important, and signal is filtered by FIR
After device, in the expectation by calculating all averages, the expected signal for meeting Gaussian Profile is obtained, at distribution
It manages module and generates random number sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733009.1A CN109029741B (en) | 2018-07-05 | 2018-07-05 | Full-differential balanced random number generation method based on light quantum four-quadrant detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733009.1A CN109029741B (en) | 2018-07-05 | 2018-07-05 | Full-differential balanced random number generation method based on light quantum four-quadrant detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109029741A true CN109029741A (en) | 2018-12-18 |
| CN109029741B CN109029741B (en) | 2024-02-06 |
Family
ID=64640497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810733009.1A Active CN109029741B (en) | 2018-07-05 | 2018-07-05 | Full-differential balanced random number generation method based on light quantum four-quadrant detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109029741B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196710A (en) * | 2019-05-13 | 2019-09-03 | 弦海（上海）量子科技有限公司 | The quantum random number generator of chip structure zero-difference detection |
| CN110333842A (en) * | 2019-06-28 | 2019-10-15 | 深圳市永达电子信息股份有限公司 | A kind of true random number generation method and system |
| CN111522530A (en) * | 2019-02-03 | 2020-08-11 | 华为技术有限公司 | Quantum random number generator and key generation system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2096422A1 (en) * | 2006-11-29 | 2009-09-02 | Fujitsu Limited | Optical noise index calculating method, optical noise index calculating device, and optical sampling oscilloscope |
| CN103793198A (en) * | 2014-01-24 | 2014-05-14 | 上海交通大学 | Quantum random number generator based on amplified vacuum state |
| US20140337400A1 (en) * | 2011-12-07 | 2014-11-13 | Quintessencelabs Pty Ltd. | Integrated quantum-random noise generator using quantum vacuum states of light |
| CN104698217A (en) * | 2015-04-03 | 2015-06-10 | 重庆理工大学 | Non-contact differential difference correlation instantaneous speed sensing method |
| CN104748844A (en) * | 2015-03-24 | 2015-07-01 | 中国科学院长春光学精密机械与物理研究所 | Signal processing system for four-quadrant photoelectric detector |
| CN107797964A (en) * | 2017-09-22 | 2018-03-13 | 中国科学院西安光学精密机械研究所 | Multiphase pseudo-random sequence based on single photon detection quickly generates and coding/decoding method |
| CN207396340U (en) * | 2017-06-23 | 2018-05-22 | 南京富岛信息工程有限公司 | Low noise MEMS optical interference signals high speed acquisition devices |
| CN208350216U (en) * | 2018-07-05 | 2019-01-08 | 弦海（上海）量子科技有限公司 | Light quantum Quadrant detector fully differential equilibrium random number generator |
-
2018
- 2018-07-05 CN CN201810733009.1A patent/CN109029741B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2096422A1 (en) * | 2006-11-29 | 2009-09-02 | Fujitsu Limited | Optical noise index calculating method, optical noise index calculating device, and optical sampling oscilloscope |
| US20140337400A1 (en) * | 2011-12-07 | 2014-11-13 | Quintessencelabs Pty Ltd. | Integrated quantum-random noise generator using quantum vacuum states of light |
| CN103793198A (en) * | 2014-01-24 | 2014-05-14 | 上海交通大学 | Quantum random number generator based on amplified vacuum state |
| CN104748844A (en) * | 2015-03-24 | 2015-07-01 | 中国科学院长春光学精密机械与物理研究所 | Signal processing system for four-quadrant photoelectric detector |
| CN104698217A (en) * | 2015-04-03 | 2015-06-10 | 重庆理工大学 | Non-contact differential difference correlation instantaneous speed sensing method |
| CN207396340U (en) * | 2017-06-23 | 2018-05-22 | 南京富岛信息工程有限公司 | Low noise MEMS optical interference signals high speed acquisition devices |
| CN107797964A (en) * | 2017-09-22 | 2018-03-13 | 中国科学院西安光学精密机械研究所 | Multiphase pseudo-random sequence based on single photon detection quickly generates and coding/decoding method |
| CN208350216U (en) * | 2018-07-05 | 2019-01-08 | 弦海（上海）量子科技有限公司 | Light quantum Quadrant detector fully differential equilibrium random number generator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522530A (en) * | 2019-02-03 | 2020-08-11 | 华为技术有限公司 | Quantum random number generator and key generation system |
| CN110196710A (en) * | 2019-05-13 | 2019-09-03 | 弦海（上海）量子科技有限公司 | The quantum random number generator of chip structure zero-difference detection |
| CN110196710B (en) * | 2019-05-13 | 2023-06-16 | 弦海（上海）量子科技有限公司 | Quantum random number generator for homodyne detection of chip structure |
| CN110333842A (en) * | 2019-06-28 | 2019-10-15 | 深圳市永达电子信息股份有限公司 | A kind of true random number generation method and system |
| CN110333842B (en) * | 2019-06-28 | 2021-08-17 | 深圳市永达电子信息股份有限公司 | True random number generation method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109029741B (en) | 2024-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109029741A (en) | Based on light quantum Quadrant detector fully differential equilibrium random number generation method | |
| CN106354476B (en) | Quantum random number generator based on laser phase fluctuation and quantum random number generation method | |
| CN103793198B (en) | Based on quantum random number generator and the method for amplifying vacuum state | |
| US8493573B2 (en) | High-resolution optical position sensing with sparse, low-resolution detectors | |
| CN101980146B (en) | Photon-number distinguishable detection-based true random number generator | |
| CN106053433B (en) | Laser-induced spectral analysis method and apparatus are perceived based on light modulation compression dimensionality reduction | |
| CN110687518B (en) | On-chip integrated balanced detection receiving system and method | |
| CN105258798B (en) | Photo detector spectral response test system and its measuring method | |
| CN111609918A (en) | Optical fiber distributed vibration sensing system based on envelope detection circuit | |
| CN110851111B (en) | High-safety source-independent quantum random number generation device and method | |
| CN208350216U (en) | Light quantum Quadrant detector fully differential equilibrium random number generator | |
| CN105975248A (en) | Quantum random number generator based on amplified spontaneous emission and generation method | |
| CN107014496A (en) | A kind of pure-phase object imaging system based on photon trajectory angular momentum | |
| CN102262224A (en) | Amplitude-modulated wave phase-locked laser ranging method and device | |
| CN206115423U (en) | Quantum random number generator based on enlarge spontaneous radiation | |
| CN114268375A (en) | Photon compression sensing method and system based on chirped fiber grating | |
| CN110208726A (en) | For the detection system for the outside electromagnetic interference for influencing magnetic resonance system image quality | |
| US11493613B2 (en) | Method of generating a time domain echo waveform and electromagnetic radiation echo waveform generation system | |
| CN110596630B (en) | Frequency calibration system and method based on diamond NV color center quantum precision measurement device | |
| CN113325439A (en) | Depth camera and depth calculation method | |
| CN110196710B (en) | Quantum random number generator for homodyne detection of chip structure | |
| CN111385021A (en) | Multi-wavelength optical power monitoring system and method based on carrier modulation | |
| CN109783059A (en) | A kind of quantum random number production method and device | |
| CN112595424B (en) | Laser wavelength real-time acquisition and measurement system and method | |
| CN108801602A (en) | Device and method for reducing low-frequency noise in dual-beam optical trap system |
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 |