CN105468332A - Data post-processing type instant true random signal generator - Google Patents
Data post-processing type instant true random signal generator Download PDFInfo
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Abstract
The invention discloses a data post-processing type instant true random signal generator, which comprises a light source, a light beam splitter, a single-photon detector, an electric beam splitter, a pulse modulator, a random signal driving device, a data acquisition device and a data processing module, wherein a probing photon is transmitted or reflected after passing through the light beam splitter to generate a random signal; the signal is input into a device which needs random signal regulation and control after the signal is modulated; and finally, the output data of the device is subjected to post-selection processing, and an output result under true random signal regulation and control can be obtained. The data post-processing type instant true random signal generator is based on a light quantum effect, the generated random signal can pass a Rabbit standard test in TestU01, and the data post-processing type instant true random signal generator has the characteristics of low cost, high output signal timeliness and high driving performance and can be used for application fields including information encryption, quantum non-locality verification and the like.
Description
Technical field
The present invention relates to random signal generation technology, more specifically, relate to a kind of there is high-timeliness true in dynamoelectric signal generating apparatus and corresponding to system of selection after the data of random signal driver output.
Background technology
Randomizer all has widespread use in many modern science fields---such as statistical study, numerical simulation, algorithm design and information encryption etc.Random generator can be divided three classes: pseudorandom number generator, quasi random number generator and real random number generator.Wherein pseudo random number and quasi random number are generated by all kinds of random number algorithm, and the former has higher statistics randomness, and the latter has higher statistics homogeneity.These two kinds of random numbers have does not need external hardware support, the advantage that formation speed is higher, but is determined by algorithm and initial value due to the random series generated, the formation sequence of this two classes random number can be predicted in principle, is not completely random in essence.In information security and information encryption, if adopt above two class random numbers to be encrypted information, assailant can find mathematical law wherein in principle, thus implements to analyze decoding to ciphertext.Be different from pseudo random number and quasi random number, the generation of true random number sequence such as, based on various quantum stochastic process, circuit noise, atomic decay, cosmic rays etc.According to quantum-mechanical related conclusions, when system is in the quantum superposition state of a certain mechanical quantity, system can be made to be collapsed in a certain eigenstate of this mechanical quantity at random to the measurement of this mechanical quantity, be therefore completely random to the result of this mechanical measurement.So true random number has uncertain advantage.In addition, desirable true random number also should have not reproducible, without the feature such as inclined.
Common real random number generator has following several:
1. based on the randomizer [T.Jennewein, etal, Rev.Sci.Intrum.71,1675 (2000)] of optical beam-splitter.Its ultimate principle is for when photon is by 50: 50 beam splitter, and the probability of reflection and transmission is 1/2.These two kinds of events are counted 0 and 1 respectively, just can obtain one group of random bit sequence;
2. based on the randomizer [M.Wahletal, Appl.Phys.Lett.98,171105 (2011)] of photon time of arrival.When its ultimate principle is the time interval much larger than the coherence time of light source when adjacent twice detection, the adjacent time interval detected for twice between photon is completely random.After measured time interval normalization, can obtain (0,1] on random number;
3. based on the randomizer [H.Guoetal, Phys.Rev.E81,051137 (2010)] of laser random phase noise.When its ultimate principle is the time interval much larger than the coherence time between shoot laser, phase differential between it can think completely random, therefore make laser by after the M-Z interferometer (time delay between two-arm is much larger than the laser coherence time) of a unequal arm, the exit path completely random of laser after interfering.One group of random bit sequence can be obtained thus.
Now existing multiple business-like real random number generator puts goods on the market, as the PQRNG150 product (based on photon time of arrival) etc. of the QUANTIS product (based on optical beam-splitter) of IDQ company, PicoQuant company.According to above all kinds of randomizer scheme, after obtaining initial random Number Sequence, in order to the factors such as abatement device actual techniques index and theory and technology index are not inconsistent are on the impact of gained information randomness, also need to carry out mathematics last handling process to this sequence, obtain desirable statistical property to make the random series of generation.
At quantum-key distribution [KyoInoue, IEEEJournalofSelectedTopicsinQuantumElectronics12-4,888 (2006)], checking quantum nonlocality [Simon
etal, Nature446,871 (2007)] etc. need to introduce in real time randomness measure or modulation experiment in, usually need very to regulate and control experimental apparatus with dynamoelectric signal.As adopted above real random number generator to generate random signal, meaning and needing first to obtain one group of initial random sequence, then this random series input computer etc. is carried out aftertreatment, afterwards gained true random number sequence is converted to electric impulse signal and exports.Because last handling process needs certain hour, the ageing meeting therefore producing random signal reduces greatly.Here, ageing low refer to from random information generate (namely quantum collapse generation the moment, correspondence is described three kinds of real random number generators above, are equivalent to photon by moment of beam splitter, atomic transition outgoing photon moment and laser emitting moment) time interval between exporting with dynamoelectric signal is longer.On the one hand, in association areas such as quantum-key distribution, it is ageing higher that random signal produces, and just means that the risk that this random information is revealed is lower; On the other hand, in the experiments such as checking quantum mechanics non-locality, when random signal ageing is lower than a certain threshold value, so-called non-local leak can be produced, affect the confidence level of experimental result.Briefly, verify the experiment of quantum mechanics non-locality need by spatially away from two particles carry out some random measurement respectively.For making between two particle without information transmission (namely meeting locality condition), need in experiment to ensure from random information be generated to particle measured between the time interval be less than this random information with the time needed for light velocity propagation to another particle, it is high ageing that this just requires random signal to have.Such as when two particle is at a distance of 20m, require that the above-mentioned time interval was less than for 67 nanoseconds, and the finishing time of above real random number generator is much larger than this time frame.Except ageing low problem, random number is converted to and also needs Additional signal generator with dynamoelectric signal output, this not only adds cost, also reduce device integrated level.
Summary of the invention
(1) problem that will solve
The technical problem to be solved in the present invention uses existing real random number generator to produce with dynamoelectric signal, and need extra Additional signal generator, device integration is not high.And from random information be generated to dynamoelectric signal export between the time interval longer, random signal generate ageing lower.
(2) technical scheme
For solving the problems of the technologies described above, the present invention proposes a kind of instant true random signal generator of data processing postposition type, comprises a light source, a beam splitter, two single-photon detectors, two electric beam splitters, two signal modulators, random signal drive unit, a data collector and a data processing module; Described light source is used for sending photon; Described beam splitter is used for the photon transmission randomly that sent by described light source or reflection; On the transmitted light path that described two single-photon detectors lay respectively at described beam splitter and reflected light path, be respectively used to detect the photon from described beam splitter transmittance and reflectance, and produce an electric impulse signal when detecting photon; After described two electric beam splitters are respectively used to carry out electric beam splitting to the electric impulse signal that two single-photon detectors export, beam splitting Hou mono-tunnel inputs described data collector, and another road inputs described random signal drive unit respectively by after in two signal modulators; Described two signal modulators are respectively used to carry out amplitude modulation(PAM), to mate described random signal drive unit required voltage to the electric impulse signal of input; Described random signal drive unit is used under the regulation and control of described electric impulse signal, export operation result and synchronous electric pulse signal, and this synchronous electric pulse signal is inputted described data collector; Described data collector is used for related data to input data processing module; Described data processing module is used for meeting process to data, obtains good statistics random character to make the random signal of generation.
According to the specific embodiment of the present invention, described light source is made up of LED lamp bead, single-mode fiber, fiber coupler and adjustable optical attenuator.
According to the specific embodiment of the present invention, described electric beam splitter output short rise time, the two path signal that amplitude is equal, when single-photon detector exports high level signal, the signal after beam splitting is still logic high.
4, the instant true random signal generator of data processing postposition type according to claim 1, is characterized in that, one_to_one corresponding between the operation Output rusults of random signal drive unit and output synchronizing signal.
5, the instant true random signal generator of data processing postposition type according to claim 1, is characterized in that, data collector is for marking the input time of each high level signal of each input port.
6, the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, to be reflected by beam splitter from photon or be transmitted to reflex circuit or transmission road signal to enter data collector institute be T0 through the time, it is T1 that photon enters data collector institute through the time by described beam splitter to the corresponding synchronizing signal that random signal drive unit exports, random signal corresponding to synchronizing signal is time delay, i.e. the random signal in T0-T1 moment.
According to the specific embodiment of the present invention, the process that meets of described data processing module comprises: do reflex circuit signal and transmission road signal and select to process, namely first the time interval between reflex circuit signal and transmission road signal two paths of signals is less than the signal meeting window width all to abandon, retrieval time interval in signal of going the same way is less than the signal meeting the dead time again, and abandon other signals except the signal produced at first, finally obtain true random signal.
According to the specific embodiment of the present invention, the process that meets of described data processing module only retains and remains drive unit synchronizing signal corresponding to true random signal afterwards with selecting to process.
According to the specific embodiment of the present invention, described beam splitter is made up of polaroid and polarization beam apparatus, light by time respectively with 50% probability transmission or reflection.
(5) beneficial effect
The present invention compares tool with existing real random number generator and has the following advantages:
(1) after signal modulation circuit is integrated in randomizer by the present invention, can directly output pulse amplitude adjustable and pulse rise time shorter with dynamoelectric signal, and need not Additional signal generator.While the stronger driven nature of guarantee, improve device integrated level.
(2) after data processing module is placed in random signal drive unit by the present invention, substantially reduce while ensure that signal randomness random information produce and random signal by the time delay between using.
(3) adopt business LED lamp bead to substitute laser instrument as light source, reduce installation cost.
Accompanying drawing explanation
The theory diagram of the instant true random signal generator of the data processing postposition type that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the pin access way of the NB3N551 chip in the embodiment of the present invention under beam splitting pattern;
Fig. 3 is the pin access way of the NB3N551 chip in the embodiment of the present invention under modulating mode;
Fig. 4 is supply voltage and the output voltage graph of a relation of NB3N551 chip under modulating mode in the embodiment of the present invention, and round dot is measurement data, and oblique line is the result after linear fit;
Fig. 5 is the specific embodiment wiring diagram of the embodiment of the present invention.
Embodiment
For solving the problem, the present invention proposes a kind of instant true random signal generator with data processing post-modifier.The use-pattern of random signal generator of the present invention is after random signal produces, random signal is inputted a certain need apply random signal device (i.e. random signal drive unit) in, this device exports operation result under random signal drives, finally by meeting process, operation result is screened, to obtain the plant running result under random signal driving.
As shown in Figure 1, signal generator comprises a light source, a beam splitter, two single-photon detectors, two electric beam splitters, two signal modulators, random signal drive unit, a data collector and a data processing module to the structure of random signal generator of the present invention; Light source is used for sending photon; Beam splitter is used for the photon transmission randomly that sent by described light source or reflection; Two single-photon detectors, respectively on the position transmitted light path of stating beam splitter and reflected light path, are respectively used to detect the photon from described beam splitter transmittance and reflectance, and produce an electric impulse signal when detecting photon; After two electric beam splitters are respectively used to carry out electric beam splitting to the electric impulse signal that two single-photon detectors export, beam splitting Hou mono-tunnel inputs described data collector, and another road inputs described random signal drive unit respectively by after in two signal modulators; Two signal modulators are respectively used to carry out amplitude modulation(PAM), to mate described random signal drive unit required voltage to the electric impulse signal of input; Random signal drive unit is used under the regulation and control of electric impulse signal, export operation result and synchronous electric pulse signal, and this synchronous electric pulse signal is inputted described data collector; Data collector is used for related data to input data processing module; Data processing module is used for meeting process to data, obtains good statistics random character to make the random signal of generation.
After two signal modulators, input the two-way electric impulse signal of random signal drive unit, when randomness has been embodied in electric pulse input, the input path of this electric pulse is random, and therefore this electric impulse signal is random signal.
The method of operation of described random signal drive unit is: when the electric impulse signal as random signal inputs, this random signal drive unit is according to the input path of random signal, a kind of mode operation is selected from two kinds of operational modes, and export the operation result of this random signal drive unit and the synchronous electric pulse signal synchronous in time with this operation result over time, the mark that synchronous electric pulse signal exports as this operation result.
It should be noted that, the present invention does not do requirement to the concrete function of random signal drive unit and carrying out practically step etc., and therefore operation result general reference random signal drive unit is here after random signal input, through a period of time postrun output signal.Can determine whether this signal retains afterwards after meeting process.
Before meeting process, the generation moment that can there is the random electric impulse signal of two-way that following two kinds of situations are caused by the light field statistical property of LED light source is separated by extremely short so that is difficult in time differentiate; 2. a certain road caused by the afterpulse effect of single-photon detector has multiple signal in generation of going the same way after having electric impulse signal to generate within the short period afterwards.The pulse signal generated under both of these case can reduce the randomness of the signal that random signal generator exports.By meeting process to the synchronous electric pulse signal of 6,7 road electric signal and random signal drive unit, the operation result in above two kinds of situations can be removed.Meet the concrete steps of process by described below, briefly, namely 1. abandoned pulse signal corresponding when photon is detected on reflex circuit and transmission road simultaneously, 2. after obtaining a random signal, after abandoning it in certain hour in all signals produced of going the same way.The higher random signal of randomness can be obtained after meeting process.
The photon that light source sends is through beam splitter by random transmission or reflection, and detecting transmission road or reflex circuit at single-photon detector subsequently has during photon outgoing and export a high level pulse signal in corresponding output end.Electric signal is after electric beam splitter beam splitting, and a road input data collector, separately leads up to the drive unit inputting after signal modulator and need random signal to regulate and control.Drive unit exports operation result and synchronous electric pulse signal under random signal regulation and control, and by this synchronous electric signal input data collector.Data are inputted data processing module and meet process to data by data collector.The last operation result only retaining the random signal drive unit corresponding with remaining synchronization pulse after meeting process, thus obtain the operation result under true random signal regulation and control.
In Fig. 1, the corresponding space optical path of line 1; The corresponding space optical path of line 2,3, fiber coupler, single-mode fiber, wherein single-mode fiber one termination fiber coupler is to receive spatial light, single-mode fiber other end order photon detector; Line 4 to 13 respective signal line or signal butt junction.
Wherein, described line 2 is identical with the light path of 3 correspondences, line 4 and 5,6 and 7,8 and 9,10 identical with the signal wire length of 11 correspondences.
Wherein, described light source is made up of LED lamp bead, fiber coupler, single-mode fiber and adjustable optical attenuator.LED aims at singlemode fiber port, makes a part of optically-coupled enter single-mode fiber.The single-mode fiber other end inserts fiber coupler, and emergent light is modulated to directional light.Directional light its light intensity after adjustable optical attenuator is attenuated to suitable size;
Wherein, described beam splitter is made up of polaroid and polarization beam apparatus, and wherein polaroid only makes the linearly polarized light transmission of particular polarization, is the mutually orthogonal linearly polarized light in polarization direction by the transmission-polarizing light of polarization beam apparatus and reflect polarized light.Regulate polaroid angle to make the transmittance and reflectance polarization direction angle of transmitted light polarization direction and polarization beam apparatus be 45 degree, light by time can respectively with 50% probability transmission or reflection;
Wherein, described single-photon detector is the avalanche silicon diode type single-photon detector that two models are identical, being respectively used to detection transmission road photon and reflex circuit photon, when there being photon to be detected, exporting a standard TTL high level signal;
Wherein, described signal beam splitter is the NB3N551 chip that OnSemiconductor company produces, and pin access way is shown in Fig. 2.Its effect is that input signal is divided into the signal that two-way amplitude is equal, ensures that signal elevating time is shorter simultaneously.In use V
dDpin access voltage is fixed.Also other can be adopted to have the High-speed Electric beam splitter of similar functions;
Wherein, described signal modulator is the NB3N551 chip that OnSemiconductor company produces, and pin access way is shown in Fig. 3.Its effect is modulation signal amplitude, and concrete modulation amplitude size depends on random signal drive unit demand.Also other can be adopted to have the high speed signal modulator of similar functions;
Wherein, the amplitude output signal of described NB3N551 chip is by changing V
dDpin access voltage swing regulates, NB3N551 chip output voltage and V under modulating mode
dDpin access supply voltage relation is shown in Fig. 5;
Wherein, described NB3N551 chip input and output voltage graph of a relation is tested under the condition of 50 Ohmage loads;
Wherein, described random signal drive unit is the device needing random signal to regulate and control, and for the input signal of different random signal input part, this device should carry out different processing response, and after certain time-delay, exporting corresponding operation result;
Wherein, described data collector is the instrument of the input time can recording each input of each input port high some ordinary mail number, the ID800 type coincidence counting instrument that IDQ company can be adopted to produce, or other have the data collecting card of similar functions;
Wherein, described data processing module is for meeting handling procedure, its effect meets process to the synchronizing signal of random signal and random signal drive unit, make remaining random signal have good statistics randomness, drive unit corresponding to residue synchronizing signal export for true random signal modulate under operation result;
Wherein, the operation wavelength of described single-mode fiber, fiber coupler, beam splitter, single-photon detector should be corresponding with the emission wavelength of LED lamp bead.
As can be seen from technical scheme of the present invention, the present invention is after obtaining original random signal, the direct device needing random signal to regulate and control the random signal input after modulation, after the output signal obtaining random drive device, based on the result meeting process, Screening Treatment is carried out to its operation result again, while ensure that the good random character of true random signal, shorten random information and produce (photon still reflects through beam splitter transmission) is employed (with dynamoelectric signal input driving device) time to random information.In addition by additional high-speed signal modulator, the present invention through the random signal adjustable compared with short time delay output pulse amplitude, therefore can drive all kinds of device with different driving voltage.LED lamp bead is finally adopted to substitute laser instrument can reduce this invention cost as light source.
Below in conjunction with specific embodiment, the present invention is described in further detail.
Principle of the present invention is based on quantum-mechanical measurement theorem.When polarized light is by polarization beam apparatus, when the cross polarization base angle of polarisation of light direction and polarization beam apparatus is 45 degree, photon can with 50% probability transmission or reflection, this result cannot be predicted completely before photon is by polarization beam apparatus.If photon transmittance and reflectance is used " 0 " and one token respectively, after the multiple photon of measurement is by the exit path after polarization beam apparatus, one group of prior unforeseen random bit sequence can be obtained.
The present invention preferably embodiment is:
LED lamp bead power used is 1W, and spectral centroid wavelength is 940nm, and halfwidth is about 50nm.
Because LED lamp bead is thermal light source, the light field statistical property that it sends meets thermo-optical field distribution, has bunching effect, therefore should be extremely enough little by light intensity attenuation, to make the minimum distinguishable time interval greater than single-photon detector between most of photon.The decay strong and weak counting rate by follow-up two single-photon detectors judges, proper attenuation degree be single-photon detector counting rate respectively for per second a few to tens of ten thousand, reduction attenuation degree can improve random signal generating rate.
The detection efficiency of single-photon detector used near 940nm is about 30%, and the dead time is 20ns, and minimum resolving time is 350ps, and maximum dark counting is 50 per second.After the incident single-photon detector of photon, single-photon detector is with the random output electric pulse signal of certain probability, and therefore the detection efficiency of detector is not 100% randomness not affecting random signal.
The output signal of detector is after the NB3N551 chip beam splitting under beam splitting pattern, and a road exports access ID800 type coincidence counting instrument, and another road exports the NB3N551 chip input end under access modulating mode.The NB3N551 chip V of wherein beam splitting pattern
dDthe access voltage of pin is+5V, can bonding photon detector export high level signal time, the output signal after beam splitting is still TTL high level; The NB3N551 chip V of modulating mode
dDthe access voltage of pin depends on random signal drive unit demand, its amplitude output signal and V
dDthe relation of the access voltage swing of pin is shown in Fig. 5.Random signal is input signal drive unit after modulation.Drive unit exports operation result and synchronization pulse after certain time-delay, wherein synchronization pulse input coincidence counting instrument, and operation result selects process after retaining wait.The result of drive unit and synchronization pulse should export at synchronization, or ensure therebetween can one_to_one corresponding mutually.
Due to the thermo-optical field character of LED light source, no matter therefore its attenuation degree is how strong, always there is the situation of multi-photon incident light beam splitter simultaneously in very short time interval, if a part of photon transmission, another part reflects, and two-way single-photon detector can output signal after detecting photon simultaneously.On the one hand, two paths of signals inputs random signal drive unit is simultaneously to cause its operation result inaccurate; On the other hand, cannot judge to export which kind of bit sequence when two-way detector responds simultaneously.In addition, when multi-photon is simultaneously incident at short notice, may have stronger coherence between these photons, there is certain association in the exit path therefore between these photons, this can affect the randomness generating signal.
In addition because avalanche diode type single-photon detector has afterpulse effect, when the incident detector of photon and after being detected, likely after comparatively long delay, just export corresponding signal.This can affect and generate the randomness of signal, especially can strengthen its relevance in time.
For solving above two problems, can adopt to meet to process and data are screened.Below for meeting the basic skills of process:
Meeting process is situation by analyzing multichannel input signal in window sometime, to determine retain or abandon this signal and corresponding data thereof.Make line 2,3 corresponding transmission road and reflex circuit respectively in Fig. 1, the signal wire of line 6,7 correspondence accesses port one and the port 2 of coincidence counting instrument respectively.If port one has a high level signal to be input as event a, port 2 has a high level signal to be input as event b.As shown in the table, when event a or event b occurs, open one immediately and meet window, (comprising window and open the moment) in this window has three kinds of situations.Data processing method shown in following table is taked respectively to these three kinds of situations, and the input signal in certain hour after meeting close (meeting the dead time) and corresponding data are all abandoned.Wherein meeting window width recommended value is 3ns, and meeting dead time recommended value is 500ns.
| Sequence number | 1 | 2 | 3 |
| Event a | Occur | Do not occur | Occur |
| Event b | Occur | Occur | Do not occur |
| Processing mode | Abandon | Retain | Retain |
In employing, the processing mode of table can eliminate the simultaneously incident impact of multi-photon, and meets the dead time can eliminate single-photon detector afterpulse effect and the relevant impact of multi-photon by arranging.
If arrive beam splitter from photon, be detected device detection afterwards, it is T0 that final output signal enters coincidence counting instrument input port institute elapsed time; Arrive beam splitter from photon, be detected device detection afterwards, output signal enters random signal drive unit, and it is T1 that last random signal drive unit output synchronizing signal enters coincidence counting instrument input port institute elapsed time.So meeting the drive unit synchronizing signal that the corresponding time delay of each random signal in process is (T1-T0).Only retain and remain the corresponding drive unit synchronizing signal of random signal afterwards with meeting process, abandon the drive unit operation result corresponding with the synchronizing signal do not retained simultaneously, can obtain true random signal regulate and control under drive unit operation result.Random bit is converted to by through meeting the random signal after process, and after arranging in chronological order, this random bit sequence is carried out to the Rabbit standard testing in TestU01, it by every detection in this standard detection, can show that the random signal after meeting process has good statistics random character.
Of the present invention ageing enough high for making, arriving beam splitter from photon should be as far as possible short to signal input random signal drive unit institute elapsed time.As a specific embodiment, beam splitter is 15cm to the distance of single-photon detector, and wherein single-mode optical fiber length is 10cm.Detector and electric beam splitter, electric beam splitter are connected with the signal converting head being about 1cm by length between signal modulator, and adopt 10cmBNC signal wire to be connected between signal modulator with random signal drive unit, the time delay that above light path and circuit are introduced is 1.3ns.In addition the input and output time delay of single-photon detector is the output input time delay of 20ns, NB3N551 is picosecond magnitude, can ignore.Therefore time delay adds up to 21.3ns.Visible the present invention has very high ageing.In addition, in practical operation, the light path between two-way can not be identical, may there is the error of 1 to 2cm.The time delay that this error is introduced is 33ps to 67ps, negligible.
Claims (9)
1. an instant true random signal generator for data processing postposition type, comprises a light source, a beam splitter, two single-photon detectors, two electric beam splitters, two signal modulators, random signal drive unit, a data collector and a data processing module;
Described light source is used for sending photon;
Described beam splitter is used for the photon transmission randomly that sent by described light source or reflection;
On the transmitted light path that described two single-photon detectors lay respectively at described beam splitter and reflected light path, be respectively used to detect the photon from described beam splitter transmittance and reflectance, and produce an electric impulse signal when detecting photon;
After described two electric beam splitters are respectively used to carry out electric beam splitting to the electric impulse signal that two single-photon detectors export, beam splitting Hou mono-tunnel inputs described data collector, and another road inputs described random signal drive unit respectively by after in two signal modulators;
Described two signal modulators are respectively used to carry out amplitude modulation(PAM), to mate described random signal drive unit required voltage to the electric impulse signal of input;
Described random signal drive unit is used under the regulation and control of described electric impulse signal, export operation result and synchronous electric pulse signal, and this synchronous electric pulse signal is inputted described data collector;
Described data collector is used for related data to input data processing module;
Described data processing module is used for meeting process to data, obtains good statistics random character to make the random signal of generation.
2. the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, described light source is made up of LED lamp bead, single-mode fiber, fiber coupler and adjustable optical attenuator.
3. the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, described electric beam splitter output short rise time, the two path signal that amplitude is equal, when single-photon detector exports high level signal, the signal after beam splitting is still logic high.
4. the instant true random signal generator of data processing postposition type according to claim 1, is characterized in that, one_to_one corresponding between the operation Output rusults of random signal drive unit and output synchronizing signal.
5. the instant true random signal generator of data processing postposition type according to claim 1, is characterized in that, data collector is for marking the input time of each high level signal of each input port.
6. the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, to be reflected by beam splitter from photon or be transmitted to reflex circuit or transmission road signal to enter data collector institute be T0 through the time, it is T1 that photon enters data collector institute through the time by described beam splitter to the corresponding synchronizing signal that random signal drive unit exports, the random signal that synchronizing signal is right is time delay, i.e. the random signal in T0-T1 moment.
7. the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, the process that meets of described data processing module comprises: do reflex circuit signal and transmission road signal and select to process, namely first the time interval between reflex circuit signal and transmission road signal two paths of signals is less than the signal meeting window width all to abandon, retrieval time interval in signal of going the same way is less than the signal meeting the dead time again, and abandon other signals except the signal produced at first,, finally obtain true random signal.
8. the instant true random signal generator of data processing postposition type according to claim 1, is characterized in that, the process that meets of described data processing module only retains and remains drive unit synchronizing signal corresponding to true random signal afterwards with selecting to process.
9. the instant true random signal generator of data processing postposition type according to claim 1, it is characterized in that, described beam splitter is made up of polaroid and polarization beam apparatus, light by time respectively with 50% probability transmission or reflection.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325815A (en) * | 2016-10-17 | 2017-01-11 | 清华大学 | Quantum random number generator and quantum random number generation method |
| CN109804348A (en) * | 2016-10-21 | 2019-05-24 | 特伦蒂诺发展公司 | Improved randomizer, especially improved real random number generator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106325815A (en) * | 2016-10-17 | 2017-01-11 | 清华大学 | Quantum random number generator and quantum random number generation method |
| CN106325815B (en) * | 2016-10-17 | 2018-12-28 | 清华大学 | A kind of quantum random number generator and quantum random number generation method |
| CN109804348A (en) * | 2016-10-21 | 2019-05-24 | 特伦蒂诺发展公司 | Improved randomizer, especially improved real random number generator |
| CN109804348B (en) * | 2016-10-21 | 2023-07-25 | 特伦蒂诺发展公司 | Improved random number generator, in particular improved true random number generator |
| 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 |
| CN116893799A (en) * | 2023-04-06 | 2023-10-17 | 太原理工大学 | Device and method for carrying out real-time security evaluation on random numbers by utilizing quantum compression sensing |
| CN116893799B (en) * | 2023-04-06 | 2024-04-05 | 太原理工大学 | Device and method for carrying out real-time security evaluation on random numbers by utilizing quantum compression sensing |
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