CN106648541B - A kind of device and method generating true random number based on twin light beam - Google Patents
A kind of device and method generating true random number based on twin light beam Download PDFInfo
- Publication number
- CN106648541B CN106648541B CN201610903070.7A CN201610903070A CN106648541B CN 106648541 B CN106648541 B CN 106648541B CN 201610903070 A CN201610903070 A CN 201610903070A CN 106648541 B CN106648541 B CN 106648541B
- Authority
- CN
- China
- Prior art keywords
- random number
- signal
- true random
- light beam
- processing system
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
- G06F7/588—Random number generators, i.e. based on natural stochastic processes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
A kind of device and method generating true random number based on twin light beam, described device includes laser, nondegenerate optical parametric oscillator, optical beam splitting system, detection and signal processing system.Detection and signal processing system include two photodetectors and follow-up signal processing system；The pump light of laser output is injected into nondegenerate optical parametric oscillator, the twin light beam of exportable a pair of of the polarized orthogonal of nondegenerate optical parametric oscillator, twin light beam is divided into two bundles light field by its own polarization through optical beam splitting system, the intensity noise of two beam twin light beams is separately detected with two photodetectors, intensity noise signal therefrom extracts two column true random numbers through follow-up signal processing system.The present invention is operable with both of which, by the intensity noise of direct detection twin light beam, can export true random number or two of two column with quantum randomness simultaneously and arrange associated true random number completely.The true random number of generation, rate and randomness with higher.
Description
Technical field
The invention belongs to random signal source technical fields.More particularly to a kind of dress for generating true random number based on twin light beam
It sets and method.
Background technique
Random number cryptography, communication, in terms of extensive application.Random number can be divided into pseudo random number and very with
Machine number.Pseudo random number generally passes through computerized algorithm and has the generation of limit for length's seed sequence, has some cycles and predictability,
Once grasping operation law can crack easily.The generation of true random number is derived from and extracts random information from actual physical phenomenon,
The random number of generation has very high uncertain and reliability.The physical resource for generating true random number at present has: chaotic systems, heat
Noise, the oscillator of free-running, quantum random process etc..
Quantum random number generator generates random number using the Quantum Properties in physical accidental source.Compared to classical random number,
The uncertainty of quantum random number randomness caused by collapse after measurement or vacuum disturbance in the quantum event introduce with
Machine noise, in the higher field of confidentiality requirement, quantum random number has higher repellence to hacker attack and information leakage
And safety.
Miguel Herrero-Collantes et al. delivered entitled " Quantum in 2016 on arXiv
The review paper [arXiv:/quant-ph 1604.03304v1] of Random Number Generators ", wherein outlining
Currently based on the method that light field generates quantum random number, photon counting, decaying pulse, laser phase noise, Raman are specifically included that
Scattering, quantum vacuum fluctuating, optical parametric oscillator etc..
Christian Gabriel et al. delivered entitled " A in 2010 on Nature Photonics
The paper of generator for unique quantum random numbers based on vacuum states "
[Nat. Photon. 4,711-715, (2010)], the job applications homodyne detection technology pass through the orthogonal of measurement vacuum state
Amplitude component, obtains that quantum randomness is very strong, the very high quantum random number of environment immunity.
Theoretical and experimental study shows to work in twin light caused by the nondegenerate optical parametric oscillator of threshold value or more
Beam has very strong Quantum Correlation characteristic, their intensity difference noise is lower than shot noise limit.It is 1987, French
Giacobino study group is for the first time using frequency stabilization argon ion laser as light source, by converting under nondegenerate parametric by twin light beam
Between intensity difference noise power be reduced to shot noise limit or less 30% [Phys. Rev. Lett. 59,2555-2557,
(1987)]；1998,88%) it is that the experiment of photoelectricity research institute, University Of Shanxi, which is obtained lower than the shot noise limit 9.2dB(degree of association,
Twin light beam [Opt. Lett. 23,870 (1998)]；2013, Julien Laurat et al. used semi-monolithic lumen type
Three Resonant parametric oscillators, produce intensity difference squeezed state light field (the twin light lower than shot noise limit 9.7dB
Beam) [Opt. Lett. 30,1177-1179, (2005)]；2015, Avik Dutt et al. utilized silicon nitride micro-optical
Parametric oscillator generates the intensity difference squeezed state light field (twin light beam) for being lower than shot noise limit 1.7dB, realizes based on light
Learn the preparation [Phys. Rev. Appl. 3,044005, (2015)] of the twin light beam of chip.
Summary of the invention
The object of the present invention is to provide a kind of device and methods that true random number is generated based on twin light beam.
A kind of device generating true random number based on twin light beam of the present invention adopts the following technical solutions realization
: it is a kind of based on twin light beam generate true random number device, including laser, sequentially be located at laser emitting optical path on it is non-
Degenerate Optical Parametric Oscillator and optical beam splitting system；It further include detection and signal processing system；Detection and signal processing system
System includes the first photodetector, the second photodetector and follow-up signal processing system；Two photodetectors distinguish position
In on two emitting light paths of optical beam splitting system；The signal output end of two photodetectors with follow-up signal processing system
Signal input part be connected；Follow-up signal processing system exports the true random number or two that two column have quantum randomness outward
Arrange associated true random number completely.
The pump light of the laser output is injected into nondegenerate optical parametric oscillator.
The nondegenerate optical parametric oscillator works in threshold value or more, the twin light of exportable a pair of polarized orthogonal
Beam, the intensity noise completely random of twin light beam, and also there are intensity correlations and quantum entanglement between twin light beam.Twin light beam
It is divided into two bundles light field by its own polarization through optical beam splitting system, it is separately detected using two photodetectors.
Two photodetectors pass through balance calibration, and common-mode rejection ratio with higher is distinguished with two photodetectors
The intensity noise for detecting two beam twin light beams, converts optical signal into corresponding electric signal.Intensity noise signal (i.e. photodetection
The electric signal that device is acquired and converted) through follow-up signal processing system, it is converted into initial random data.By the way that follow-up signal is arranged
The parameter of random number post processor in processing system can make device work in two kinds of different modes (mode 1 and mode 2).?
Under mode 1, by the way that the random number recovery rate of random number post processor is arranged, extractable two column out of device have quantum randomness
True random number and output；Under mode 2, by the way that random number post processor is arranged, to being selected after initial random data, then
It is handled through random number post processor, device is extractable two to be arranged associated true random number completely and export out.
Further, follow-up signal processing system includes signal source, the first frequency mixer, the second frequency mixer, the first low pass filtered
Wave device, the second low-pass filter and a data acquisition and after-treatment system；The signal source respectively with two frequency mixers
Signal input part is connected；The signal output end of first photodetector is connected with the signal input part of the first frequency mixer；The
The signal output end of two photodetectors is connected with the signal input part of the second frequency mixer；The signal output end of first frequency mixer
It is connected with the signal input part of the first low-pass filter, the letter of the signal output end of the second frequency mixer and the second low-pass filter
Number input terminal is connected；Signal input part of the signal output end of two low-pass filters with data acquisition and after-treatment system
It is connected.
A kind of method generating true random number based on twin light beam of the present invention (it is random with quantum to generate two column
Property true random number method) adopt the following technical solutions realization: it is a kind of based on twin light beam generate true random number side
The pump light of method, laser output is injected into nondegenerate optical parametric oscillator, and nondegenerate optical parametric oscillator works in threshold
More than value, the twin light beam of exportable a pair of polarized orthogonal, twin light beam is divided into two by its own polarization through optical beam splitting system
Beam light field, two photodetectors separately detect the intensity noise of two beam twin light beams, and the intensity noise of twin light beam is turned
It is input to follow-up signal processing system after being changed to corresponding intensity noise electric signal, what intensity noise electric signal and signal source exported
Local signal mixing and filtering is converted into initial random data through data acquisition and after-treatment system.It is acquired by setting data
Random number post processor with setting in after-treatment system, works in device under mode 1.In mode 1, random by being arranged
The random number recovery rate of number post processor, is allowed to equal with the minimum entropy of random number sequence, at random number post processor
Reason, extractable two column out of device have true random numbers and the output of quantum randomness.
A kind of method generating true random number based on twin light beam of the present invention (it is completely associated true to generate two column
The method of random number) adopt the following technical solutions realization: a method of true random number, laser are generated based on twin light beam
The pump light of device output is injected into nondegenerate optical parametric oscillator, and nondegenerate optical parametric oscillator works in threshold value or more,
The twin light beam of exportable a pair of polarized orthogonal, twin light beam are divided into two bundles light field by its own polarization through optical beam splitting system,
Two photodetectors separately detect the intensity noise of two beam twin light beams, and the intensity noise of twin light beam is converted to accordingly
Intensity noise electric signal after be input to follow-up signal processing system, the local signal of intensity noise electric signal and signal source output
Mixing and filtering is converted into initial random data through data acquisition and after-treatment system.It acquires and post-processes by setting data
The random number post processor set in system, works in device under mode 2.Under mode 2, post-processed by setting random number
Program, random number post processor filter out identical ratio in two column datas first to selecting after the initial random data of acquisition
Spy, then handled through random number post processor, device is extractable two to be arranged associated true random number completely and exports out.
The device and method provided by the invention for generating true random number based on twin light beam has following compared with congenic method
Advantage:
1. the present invention selects twin light beam as stochastic source, a nondegenerate optical parametric oscillator is only utilized, it can be simultaneously
Generate the true random number that two column have quantum randomness；
2. the intensity noise of direct detection twin light beam of the present invention generates truly random compared to general randomizer
Number, intensity noise is easy to obtain and production code rate is higher；
3. the present invention directly detects distribution of light intensity, a column random data can be obtained by a photodetector, very
Measuring device is simplified in big degree, cost is relatively low；
4. the present invention is operable with both of which (mode 1, mode 2).It works under mode 1, two column tool can be generated simultaneously
There is the true random number of quantum randomness；It works under mode 2, by the way that two can be generated simultaneously to selecting after initial random data
Arrange associated true random number completely.In the emulation of interconnected system, secret communication, before the fields such as quantum calculation have wide application
Scape.
Detailed description of the invention
Fig. 1, it is of the present invention it is a kind of based on twin light beam generate two column true random numbers device structural schematic diagram it
One.
Fig. 2, it is of the present invention it is a kind of based on twin light beam generate two column true random numbers device structural schematic diagram it
Two.
Two big powers' degree noise signal versus time curves that Fig. 3, the present invention generate, wherein (a), (b) is respectively to visit
Survey device 7A, the intensity noise signal versus time curve that 7B is generated.
Fig. 4 is the intensity noise signal versus time curve that detector 7A and 7B are generated.
Fig. 5 is the randomness testing result for the two column true random numbers that the present invention generates under operating mode 1.
Fig. 6 is the randomness testing result for the two column true random numbers that the present invention generates under operating mode 2.
1- laser, 2- nondegenerate optical parametric oscillator, 3- optical beam splitting system, 4- detection and signal processing system,
5- half-wave plate, 6- prism, the first photodetector of 7A-, the second photodetector of 7B-, 8- follow-up signal processing system, 9-KTP
Crystal, 10- concave mirror, 11- signal source, the first frequency mixer of 12A-, the second frequency mixer of 12B-, the first low-pass filter of 13A-,
The second low-pass filter of 13B-, the acquisition of 14- data and after-treatment system.
Specific embodiment
It is a kind of based on twin light beam generate true random number device, including laser 1, sequentially be located at 1 emergent light of laser
The nondegenerate optical parametric oscillator 2 and optical beam splitting system 3 of road；It further include detection and signal processing system 4；Detection and
Signal processing system 4 includes the first photodetector 7A, the second photodetector 7B and follow-up signal processing system 8；Two
Photodetector is located on two emitting light paths of optical beam splitting system 3；The signal output end of two photodetectors is equal
It is connected with the signal input part of follow-up signal processing system 8；Follow-up signal processing system 8 outward output two column have quantum with
The true random number of machine or two column associated true random number completely.
Follow-up signal processing system 8 includes signal source 11, the first frequency mixer 12A, the second frequency mixer 12B, the first low pass filtered
Wave device 13A, the second low-pass filter 13B and a data acquisition and after-treatment system 14；The signal source 11 is respectively with two
The signal input part of a frequency mixer is connected；The signal of the signal output end of first photodetector 7A and the first frequency mixer 12A
Input terminal is connected；The signal output end of second photodetector 7B is connected with the signal input part of the second frequency mixer 12B；The
The signal output end of one frequency mixer 12A is connected with the signal input part of the first low-pass filter 13A, the second frequency mixer 12B's
Signal output end is connected with the signal input part of the second low-pass filter 13B；The signal output end of two low-pass filters is equal
It is connected with the signal input part of data acquisition and after-treatment system 14.
The nondegenerate optical parametric oscillator 2 includes ktp crystal 9 and concave mirror 10.
The optical beam splitting system 3 includes the half-wave being sequentially located on 2 emitting light path of nondegenerate optical parametric oscillator
Piece 5 and prism 6；First photodetector 7A is located on the transmitted light path of prism 6, and the second photodetector 7B is located at prism 6
On reflected light path.
The laser 1 is Nd:YAP/LBO laser, and the laser that exportable central wavelength is 540nm is as pumping
Light is injected into nondegenerate optical parametric oscillator 2.
The nondegenerate optical parametric oscillator 2 includes the II class ktp crystal 9 and a concave mirror 10 of α cutting.
Lumen type uses semi-monolithic cavity configuration, to reduce by a hysteroscope, reduces excess loss.The front surface of ktp crystal 9 plates the@of T=3%
The reflectance coating (related with the wavelength of laser used) that 540nm and 1080nm are all-trans, as Input coupling mirror；The plating of concave mirror 10 T=
The reflectance coating that 12.5%@1080nm and 540nm is all-trans is fixed on a piezoelectric ceramics, as output coupling mirror for locking
Nondegenerate optical parametric oscillator 2 is long to resonant cavity.540nm pump light is incident in resonant cavity by ktp crystal 9, intracavitary
Annular after a week, is emitted from concave mirror 10.When nondegenerate optical parametric oscillator 2 works in threshold value or more, exportable a pair is partially
Shake orthogonal twin light beam, the intensity noise completely random of twin light beam, and there are intensity correlations and amount between twin light beam
Son tangles.
The optical beam splitting system 3 includes half-wave plate 5 and prism 6.Twin light beam is sent out by half-wave plate rear polarizer direction
Raw rotation.When the light that twin light beam plane of polarization is 22.5 degree relative to prism projecting direction angle, and two photodetectors export
Shot noise limit is corresponded to after current subtraction；When twin light beam plane of polarization is 0 degree relative to prism projecting direction angle, twin light
Beam is divided into two bundles light field by its own polarization after optical beam splitting system 3, measures two beams respectively using two photodetectors
The intensity noise of light field, the photoelectric current of two photodetectors output correspond to the intensity difference noise of twin light beam after subtracting each other.
The photoelectric tube that two photodetectors use is FD500W, by balance calibration, common-mode rejection ratio with higher.
The intensity noise that two beam twin light beams are separately detected with two photodetectors, converts optical signal into electric signal.Frequency mixer is
The integrated-optic device of Mini-Circuits company production, model ZAD-6+.The cutoff frequency of low-pass filter is
300kHz.The 4MHz local signal that the AC signal of two photodetectors output is exported with signal source 11 is mixed through frequency mixer
Frequently, low-pass filtered device filters out high-frequency signal to mixed frequency signal respectively, to extract the intensity noise letter of 3.7MHz ~ 4.3MHz
Number.Data acquisition and after-treatment system 14 include 5153 high-speed data acquisition card of NI and random number post processor.NI 5153
High-speed data acquisition card samples intensity noise signal with 10MHz sample rate, and by sampled point be converted into the two of 8 bits into
Code processed, to obtain the initial random data of two column.
Random number post processor uses SHA-512 one way hash function.By the way that random number post processor is arranged, make to fill
It sets and works in two kinds of different modes (mode 1, mode 2).
Under operating mode 1, initial random data is divided into multiple sons by specific length by random number post processor
Section, subsegment length is obtained by calculating the minimum entropy of random number sequence, so as to which the random of random number post processor is arranged
Number recovery rate, is allowed to equal with the minimum entropy of random number sequence.Input value of each subsegment as SHA-512 function, through SHA-512
Function filters out classical noise, finally extracts true random number of two column with quantum randomness and output.
Under operating mode 2, by the way that random number post processor is arranged, random number post processor is first to the initial of acquisition
Random data after select, identical bit in two column datas is filtered out, as the input value of SHA-512 function, through SHA-512
Function processing, finally extracts the completely associated true random number of two column and exports.
Fig. 3 provides two big powers' degree noise signal versus time curves that the present invention generates, wherein (a), (b) is respectively
Detector 7A, the intensity noise signal versus time curve that 7B is generated, Fig. 4 are the intensity noise that detector 7A and 7B are generated
Signal versus time curve.It can be seen that two column signals associate feature with higher.Twin light beam is measured in experiment
Intensity quantum correlated noise is lower than corresponding 5.9 dB of shot noise limit, and the degree of association corresponding to two column noise signals is about
74.3%.If improving the intensity quantum correlated noise of twin light beam, that is, the degree of association of this two column noise signal can be improved.
We are using the NIST-STS statistical check packet for examining randomness general to two kinds of operating modes (mode 1, mode 2)
Under obtained two column true random numbers detected respectively, to judge the quality of random number sequence.The testing result of mode 1 such as Fig. 5,
15 testing standards that there is two column of output the true random number of quantum randomness to have passed through NIST-STS statistical check packet, it was demonstrated that
The device and method proposed using us can generate the true random number that two column have quantum randomness；The detection knot of mode 2
Fruit such as Fig. 6, the two of output arrange 15 testing standards that associated true random number completely has passed through NIST-STS statistical check packet, and
The testing result of two column random numbers is identical, it was demonstrated that it is completely associated that the device and method proposed using us can generate two column
True random number.
Claims (4)
1. a kind of device for generating true random number based on twin light beam, which is characterized in that including laser (1), be sequentially located at and swash
Nondegenerate optical parametric oscillator (2) and optical beam splitting system (3) on light device (1) emitting light path；It further include detection and letter
Number processing system (4)；Detection and signal processing system (4) include the first photodetector (7A), the second photodetector (7B)
And follow-up signal processing system (8)；Two photodetectors are located at two emitting light paths of optical beam splitting system (3)
On；The signal output end of two photodetectors is connected with the signal input part of follow-up signal processing system (8)；Subsequent letter
Two column of output have the true random number of quantum randomness or two arrange associated true random number completely outward for number processing system (8)；
Follow-up signal processing system (8) includes signal source (11), the first frequency mixer (12A), the second frequency mixer (12B), first low
Bandpass filter (13A), the second low-pass filter (13B) and a data acquisition and after-treatment system (14)；The signal source
(11) it is connected respectively with the signal input part of two frequency mixers；The signal output end of first photodetector (7A) and first mixes
The signal input part of frequency device (12A) is connected；The signal output end and the second frequency mixer (12B) of second photodetector (7B)
Signal input part be connected；The signal output end of first frequency mixer (12A) and the signal of the first low-pass filter (13A) input
End is connected, and the signal output end of the second frequency mixer (12B) is connected with the signal input part of the second low-pass filter (13B)；
The signal output end of two low-pass filters is connected with the signal input part of data acquisition and after-treatment system (14)；
The nondegenerate optical parametric oscillator (2) includes ktp crystal (9) and concave mirror (10)；
The optical beam splitting system (3) includes the half-wave being sequentially located on nondegenerate optical parametric oscillator (2) emitting light path
Piece (5) and prism (6)；First photodetector (7A) is located on the transmitted light path of prism (6), the position the second photodetector (7B)
In on the reflected light path of prism (6).
2. a kind of method for generating true random number based on twin light beam, is realized: laser using device as described in claim 1
(1) pump light exported is injected into nondegenerate optical parametric oscillator (2), and nondegenerate optical parametric oscillator (2) works in threshold
More than value, the twin light beam of exportable a pair of polarized orthogonal, twin light beam is divided into through optical beam splitting system (3) by its own polarization
Two-beam field, two photodetectors separately detect the intensity noise of two beam twin light beams, and by the intensity noise of twin light beam
Follow-up signal processing system (8), intensity noise electric signal and signal source are input to after being converted to corresponding intensity noise electric signal
(11) the local signal mixing and filtering exported, at data acquisition and after-treatment system (14) interior random number post processor set
Reason, and then therefrom extract true random number or two of two column with quantum randomness and arrange associated true random number and defeated completely
Out.
3. a kind of method for generating true random number based on twin light beam as claimed in claim 2, which is characterized in that pass through setting
The random number recovery rate of the random number post processor set in data acquisition and after-treatment system (14), then post-processed through random number
Program processing, extractable two column out of device have true random numbers and the output of quantum randomness.
4. a kind of method for generating true random number based on twin light beam as claimed in claim 2, which is characterized in that pass through setting
The random number post processor set in data acquisition and after-treatment system (14), random number post processor is first to the initial of acquisition
Random data after select, filter out identical bit in two column datas, then handle through random number post processor, device can mention
Two are taken out to arrange associated true random number completely and export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903070.7A CN106648541B (en) | 2016-10-17 | 2016-10-17 | A kind of device and method generating true random number based on twin light beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903070.7A CN106648541B (en) | 2016-10-17 | 2016-10-17 | A kind of device and method generating true random number based on twin light beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106648541A CN106648541A (en) | 2017-05-10 |
| CN106648541B true CN106648541B (en) | 2019-05-17 |
Family
ID=58856512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610903070.7A Expired - Fee Related CN106648541B (en) | 2016-10-17 | 2016-10-17 | A kind of device and method generating true random number based on twin light beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106648541B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776582B (en) * | 2018-05-08 | 2021-09-21 | 清华大学 | Quantum tunneling effect-based true random number sequence generation method |
| CN111522530B (en) * | 2019-02-03 | 2023-07-18 | 华为技术有限公司 | Quantum random number generator and key generation system |
| CN110830123B (en) * | 2019-11-12 | 2022-04-08 | 郑州轻工业学院 | Entanglement state-based quantum information beam splitting device suitable for twin double-beam coding |
| CN112485207B (en) * | 2020-11-13 | 2021-11-19 | 华东师范大学 | Quantum vacuum spectrometer and demonstration method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7284024B1 (en) * | 2003-02-07 | 2007-10-16 | Magiq Technologies, Inc. | Quantum noise random number generator |
| CN105676559A (en) * | 2016-02-05 | 2016-06-15 | 山西大学 | Generating device for entanglement of continuous variable atom ensemble |
| CN105867046A (en) * | 2016-06-02 | 2016-08-17 | 山西大学 | Device and method for generating photo-communication waveband continuous variable quantum entanglement source |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9965250B2 (en) * | 2011-12-07 | 2018-05-08 | Quintessencelabs Pty Ltd. | Integrated quantum-random noise generator using quantum vacuum states of light |
-
2016
- 2016-10-17 CN CN201610903070.7A patent/CN106648541B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7284024B1 (en) * | 2003-02-07 | 2007-10-16 | Magiq Technologies, Inc. | Quantum noise random number generator |
| CN105676559A (en) * | 2016-02-05 | 2016-06-15 | 山西大学 | Generating device for entanglement of continuous variable atom ensemble |
| CN105867046A (en) * | 2016-06-02 | 2016-08-17 | 山西大学 | Device and method for generating photo-communication waveband continuous variable quantum entanglement source |
Non-Patent Citations (1)
| Title |
|---|
| Experimental Demonstration of Quantum Entanglement Between Frequency-Nondegenerate Optical Twin Beams;Xiaolong Su等;《Opt.Lett》;20061231;第1-12页，附图1 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106648541A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106648541B (en) | A kind of device and method generating true random number based on twin light beam | |
| CN107220026B (en) | Method for generating quantum random number at high speed based on vacuum state quantum fluctuation | |
| US12126705B2 (en) | Method of real-time high-speed quantum random number generation based on chaos amplifying quantum noise | |
| CN109388374B (en) | Random number generation method based on chaos amplification quantum noise | |
| CN206348777U (en) | The unrelated quantum random number generator of one introduces a collection | |
| Rusca et al. | Self-testing quantum random-number generator based on an energy bound | |
| JP6115387B2 (en) | Quantum key distribution receiver and method of using single photon detector | |
| EP3538988A1 (en) | Random number generator | |
| CN108712212A (en) | A kind of chaotic signal producing method and device based on uncertainty quantum noise | |
| Shen et al. | Experimental study on discretely modulated continuous-variable quantum key distribution | |
| CN108712255A (en) | A kind of quantum key distribution system and method | |
| CN110851111A (en) | High-safety source-independent quantum random number generation device and method | |
| CN104409963B (en) | The dye laser and its frequency-stabilizing method of frequency stabilization when a kind of narrow linewidth is long | |
| CN108037907B (en) | Quantum random number generation method based on vacuum parallelism | |
| US20210034739A1 (en) | Attack-resistant quantum random number generator based on the interference of laser pulses with random phase | |
| CN110677235B (en) | Method and device for generating broadband white chaos | |
| CN208707654U (en) | A kind of quantum key distribution system | |
| Jin et al. | Entangled-state generation with an intrinsically pure single-photon source and a weak coherent source | |
| CN109683850A (en) | A kind of unrelated quantum random number production method in source based on mixed state light field and device | |
| Zhu et al. | An integrated silicon photonic chip for continuous-variable quantum random numbers generator based on vacuum fluctuation | |
| Mendonca et al. | An optical scheme for quantum multi-service network | |
| Golubeva et al. | Purity and covariance matrix | |
| CN207947787U (en) | A kind of W state measuring devices based on polarization | |
| de Almeida et al. | Stabilized Fabry-Perot Filters for Enhancing Nonclassical Correlations of Light Scattered by an Ensemble of Cold Two-Level Atoms | |
| CN111901114A (en) | Attack method and attack system of free space quantum key distribution 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20211017 |