Quantum random number generator and quantum communication equipment

Abstract

The utility model discloses a quantum random number generator and a quantum communication device, and relates to the quantum communication technology field, the quantum random number generator comprises a cabinet, a power supply, a light source, a photoelectric detector, a processor, a PCBA board, a first heat radiation assembly, a second heat radiation assembly, a third heat radiation assembly and a tail fiber storage box; the light source, the photoelectric detector and the processor are fixedly arranged on the PCBA board, the PCBA board is fixedly arranged on the inner side of the bottom of the case, the first heat dissipation assembly is fixedly arranged on the inner side of one side wall of the case, the second heat dissipation assembly is fixedly and tightly arranged on the light source, and the third heat dissipation assembly is fixedly and tightly arranged on the processor. The tail fiber storage box is fixedly arranged on the inner side of the bottom of the machine case, the machine case, the light source, the photoelectric detector, the processor, the PCBA board, the first heat dissipation assembly, the second heat dissipation assembly, the third heat dissipation assembly and the tail fiber storage box are all arranged in the machine case, and the stability of the quantum random number generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quantum communication, and in particular to a quantum random number generator and quantum communication equipment. Background Art

[0002] Random numbers are a widely used basic resource, and a quantum random number generator is a device used to generate a random number sequence. Quantum random number generators with good performance have extensive and important applications in many fields such as quantum communication, cryptography, Monte Carlo simulation, numerical calculation, random sampling, etc.

[0003] According to the characteristics of random numbers, random numbers can be divided into two categories: pseudo-random numbers and true random numbers. Pseudo-random numbers are usually generated by an algorithm based on a specific initial value. For a certain algorithm and the initial value assigned to the algorithm, its random number sequence is determined, so it is not a true random number sequence in essence, and therefore cannot be used in some fields with high security requirements (such as quantum communication).

[0004] True random numbers are generated by true random number generators, which are generally generated by measuring and sampling non-deterministic physical phenomena. Usually true random numbers meet three characteristics: non-repeatability, unpredictability, and unbiasedness. There are many physical random sources that produce non-deterministic physical phenomena, such as atmospheric noise, electronic noise, frequency jitter, radiation decay, etc. However, due to the limitations of classical physical mechanisms and existing sampling and extraction methods, the coding rate of random numbers is very low and cannot meet actual needs. With the rapid development of quantum technology, true random numbers have made great breakthroughs in the selection of physical random sources and sampling measurement technology. The true random number generator designed using the quantum characteristics of physical random sources has a safe source of randomness and a high coding rate. Therefore, quantum random number generators have very important applications in the field of information security.

[0005] There are many types of quantum random number generators, such as quantum random number generators based on single photon path selection, quantum random number generators based on photon arrival time, and quantum random number generators based on pulse light phase fluctuations. These types of quantum random number generators can all generate quantum random numbers, but they generally have the disadvantages of complex structure, unstable performance, and not conducive to integration. Utility Model Content

[0006] The embodiments of the utility model provide a quantum random number generator and a quantum communication device to solve the defects in the prior art.

[0007] In order to achieve the above objectives, the quantum random number generator and quantum communication device provided by the embodiment of the utility model adopt the following technical solutions:

[0008] In the first aspect, the quantum random number generator provided by the embodiment of the utility model includes a chassis, a power supply, a light source, a photodetector, a processor, a PCBA board and a first heat dissipation component, characterized in that it also includes a second heat dissipation component, a third heat dissipation component and a pigtail storage box, wherein:

[0009] The light source, the photodetector, and the processor are respectively fixedly arranged on the PCBA board.

[0010] The PCBA board is fixedly arranged on the inner side of the bottom of the chassis.

[0011] The first heat dissipation component is fixedly arranged on the inner side of a side wall of the chassis.

[0012] The second heat dissipation component is fixedly and closely disposed on the light source.

[0013] The third heat dissipation component is fixedly and closely disposed on the processor.

[0014] The pigtail storage box is fixedly arranged on the inner side of the bottom of the chassis.

[0015] The light source, the photodetector, the processor, the PCBA board, the first heat dissipation component, the second heat dissipation component, the third heat dissipation component and the pigtail storage box are all fixedly arranged inside the chassis.

[0016] In some examples, the first heat dissipation assembly is fixedly disposed on an inner side of the chassis side wall, close to the light source.

[0017] In some examples, a dust screen is disposed inside the chassis.

[0018] In some examples, the power supply is fixedly disposed on a side wall on the side of the side wall where the first heat dissipation component is located.

[0019] In some examples, the first heat dissipation component is a plurality of heat dissipation fans.

[0020] In some examples, the second heat sink component is a fin heat sink.

[0021] In some examples, the third heat dissipation component is a fin heat sink.

[0022] In the second aspect, the quantum communication equipment provided by the embodiment of the utility model includes a chassis and a cabinet and the quantum random number generator disclosed in the first aspect.

[0023] Compared with the prior art, the quantum random number generator and quantum communication device provided by the embodiment of the utility model have the following beneficial effects:

[0024] (1) By arranging a second heat dissipation component on the light source to dissipate heat for the light source alone, the stability of the light source can be further improved, that is, the stability of the quantum random number generator is improved;

[0025] (2) By setting a third heat dissipation component on the processor to dissipate heat for the processor separately, it is helpful to speed up the heat dissipation of the processor (the core high-power chip on the PCBA board), improve the stability of the processor, that is, improve the stability of the quantum random number generator;

[0026] (3) By using a pigtail storage box to store the pigtails, the wiring inside the chassis becomes neater, which is conducive to integration and later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following surface will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described in the following surface are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the assembly effect of the quantum random number generator provided in an embodiment of the utility model.

[0029] Figure 2 A schematic diagram of the explosion effect of the quantum random number generator provided in an embodiment of the utility model.

[0030] Notes:

[0031] 1-chassis, 2-PCBA board, 3-third heat dissipation assembly, 4-second heat dissipation assembly, 5-light source, 6-pigtail storage box, 7-first heat dissipation assembly, 8-power supply. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the following surface will combine the drawings in the embodiment of the utility model to clearly and completely describe the technical solution in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The following is a description of the technical solutions involved in the quantum random number generator and quantum communication equipment provided in the embodiments of the present invention.

[0034] Example 1 Figure 1As shown, the quantum random number generator provided by the embodiment of the utility model includes a chassis 1, a power supply 8, a light source 5, a photodetector (not shown in the figure), a processor (not shown in the figure), a PCBA board 2, a first heat dissipation component 7, a second heat dissipation component 4, a third heat dissipation component 3 and a pigtail storage box 6, wherein:

[0035] The light source 5 , the photodetector, and the processor are fixedly arranged on the PCBA board 2 .

[0036] Specifically, the light source 5 is a semiconductor laser, and the photodetector converts the pulse light emitted by the light source 5 from an optical signal to an electrical signal and then converts the electrical signal into a digital signal and sends it to the processor, and the processor generates a quantum random number based on the digital signal.

[0037] The PCBA board 2 is fixedly disposed on the inner side of the bottom of the chassis 1 .

[0038] In some examples, a dustproof net is disposed inside the chassis 1 .

[0039] Specifically, the dustproof net is arranged on each surface of the chassis 1 having a through hole to prevent flying dust from entering the interior of the chassis 1 through the through holes on each surface of the chassis 1, thereby increasing the service life of each electronic device in the quantum random number generator.

[0040] The first heat dissipation assembly 7 is fixedly disposed on the inner side of a side wall of the chassis 1 .

[0041] In some examples, the first heat dissipation component 7 is a plurality of heat dissipation fans. The first heat dissipation component 7 is fixedly disposed on the inner side of the side wall of the chassis 1 , close to the light source 5 .

[0042] Specifically, the number of cooling fans in the first cooling assembly 7 is three or four or more, and the present application does not limit the number of cooling fans in the first cooling assembly 7. Since a laser is usually used as the light source 5, the laser can have an ideal cooling environment, thereby improving the stability of the light source 5.

[0043] The second heat dissipation component 4 is fixedly and closely disposed on the light source 5 .

[0044] In some examples, the second heat dissipation component 4 is a fin heat sink.

[0045] Specifically, the second heat dissipation component 4 is fixedly adhered to the light source 5 by means of adhesive. By arranging the second heat dissipation component 4 on the light source 5 to dissipate heat for the light source 5 alone, the stability of the light source 5 can be further improved, that is, the stability of the quantum random number generator is improved.

[0046] The third heat dissipation component 3 is fixedly and tightly disposed on the processor.

[0047] In some examples, the third heat dissipation component 3 is a plug-in heat sink.

[0048] Specifically, the third heat dissipation component 3 is fixed and adhered to the processor by means of adhesive backing. By arranging the third heat dissipation component 3 on the processor to dissipate heat for the processor alone, it is helpful to speed up the heat dissipation of the processor (the core high-power chip on the PCBA board 2), improve the stability of the processor, and thus improve the stability of the quantum random number generator.

[0049] The pigtail storage box 6 is fixedly disposed on the inner side of the bottom of the chassis 1 .

[0050] Specifically, by adopting the pigtail storage box 6 to store the pigtails, the wiring inside the chassis 1 is made neater, which is conducive to integration and later disassembly and maintenance.

[0051] The light source 5 , the photodetector, the processor, the PCBA board 2 , the first heat dissipation component 7 , the second heat dissipation component 4 , the third heat dissipation component 3 and the pigtail storage box 6 are all fixedly arranged inside the chassis 1 .

[0052] In some examples, the power supply 8 is fixedly disposed on a side wall on the side of the side wall where the first heat dissipation component 7 is located.

[0053] Specifically, the power supply 8 is arranged on the side wall of the side wall where the first heat dissipation component 7 is located, providing an open air duct for the PCBA board 2, facilitating the heat dissipation of the PCBA board 2 and the light source 5, the photodetector and the processor, and further improving the stability of the PCBA board 2 and the light source 5, the photodetector and the processor.

[0054] Specifically, the power supply 8 includes two power supply modules, one is a main power supply module and the other is a backup power supply module, so that when one of the power supply modules fails, the other power supply module can be used to supply power in time to avoid the various electronic devices in the quantum random number generator from not being able to operate normally due to power failure.

[0055] Embodiment 2 The quantum communication device provided in the embodiment of the present utility model includes the quantum random number generator disclosed in Embodiment 1.

[0056] It is to be understood that the related features in the above method and device can be referenced to each other. The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0057] It should be noted that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A quantum random number generator, comprising a chassis, a power supply, a light source, a photodetector, a processor, a PCBA board and a first heat dissipation component, characterized in that: It also includes a second heat dissipation component, a third heat dissipation component and a pigtail storage box, wherein: The light source, the photodetector, and the processor are respectively fixedly arranged on the PCBA board; The PCBA board is fixedly arranged on the inner side of the bottom of the chassis; The first heat dissipation component is fixedly arranged on the inner side of a side wall of the chassis; The second heat dissipation component is fixedly and closely disposed on the light source; The third heat dissipation component is fixedly and closely disposed on the processor; The pigtail storage box is fixedly arranged on the inner side of the bottom of the chassis; The light source, the photodetector, the processor, the PCBA board, the first heat dissipation component, the second heat dissipation component, the third heat dissipation component and the pigtail storage box are all fixedly arranged inside the chassis.

2. The quantum random number generator according to claim 1, characterized in that: The first heat dissipation component is fixedly arranged on the inner side of the side wall of the chassis, close to the light source.

3. The quantum random number generator according to claim 1, characterized in that: A dustproof net is arranged inside the chassis.

4. The quantum random number generator according to claim 2, characterized in that: The power supply is fixedly arranged on the side wall of the side wall where the first heat dissipation component is located.

5. The quantum random number generator according to claim 1, characterized in that: The first heat dissipation component is a plurality of heat dissipation fans.

6. The quantum random number generator according to claim 1, characterized in that: The second heat dissipation component is a plug-in heat sink.

7. The quantum random number generator according to claim 1, characterized in that: The third heat dissipation component is a plug-in heat sink.

8. A quantum communication device, comprising a chassis and a cabinet, characterized in that: It also includes the quantum random number generator described in any one of claims 1-7.

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