CN107294717A - Long-range quantum encryption communication system - Google Patents
Long-range quantum encryption communication system Download PDFInfo
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- CN107294717A CN107294717A CN201710698876.1A CN201710698876A CN107294717A CN 107294717 A CN107294717 A CN 107294717A CN 201710698876 A CN201710698876 A CN 201710698876A CN 107294717 A CN107294717 A CN 107294717A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0855—Quantum cryptography involving additional nodes, e.g. quantum relays, repeaters, intermediate nodes or remote nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0858—Details about key distillation or coding, e.g. reconciliation, error correction, privacy amplification, polarisation coding or phase coding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of long-range quantum encryption communication system, include quantum communications channel and module occurs for quantum, module, which occurs, for the quantum is used for the quantum communications channel quantum signal；The two ends for connecting the quantum communications channel are the first user terminal and second user end respectively；At least one relay is serially connected with the quantum communications channel, the relay includes receiving module and sending module, quantum signal enhancing module is provided between the receiving module and sending module；Quantum resolution unit, quantum coding unit and quantum modulating unit are provided with the quantum signal enhancing module；The quantum modulating unit, the quantum bit for quantum after to being formed through the quantum coding unit carries out quantum modulation, and the quantum bit with predetermined quantum state is corresponding.Using the long-range quantum encryption communication system of above-mentioned technical proposal, it is possible to achieve long range transmission of quantum signal, signal will not weaken in transmitting procedure.
Description
Technical field
The present invention relates to Technique on Quantum Communication field, more particularly to a kind of long-range quantum encryption communication system.
Background technology
So-called quantum communications refer to a kind of new communication modes that information transmission is carried out using entangled quantum effect, are near
The novel crossed subject grown up for 20 years, is the new research field that quantum theory and information theory are combined.
Optical quantum communication is based primarily upon the theory of Quantum Entangled States, uses quantum teleportation（Transmission）Mode realize letter
Breath transmission.According to experimental verification, no matter how far apart two particles with Entangled State are, as long as one changes, and in addition one
It is individual also to change moment, realize that the process of optical quantum communication is as follows using this characteristic：In advance build a pair have tangle
Two particles are individually placed to communicating pair by the particle of state, and the particle with unknown quantum state and the particle of sender are carried out
Combined measurement（One kind operation）, then the particle moment of recipient cave in（Change）, cave in（Change）For certain state, this
The particle of state and sender cave in（Change）State afterwards is symmetrical, and the information of combined measurement then is passed through into classical channel
Send recipient to, reception is put carries out unitary transformation according to the information received to the particle caved in（Equivalent to reversal shift）,
It can obtain and the identical unknown quantum state of sender.
Classical communication is compared compared with optical quantum communication, and its security and high efficiency can not all be mentioned in the same breath therewith.Security-amount
Son communication " will not divulge a secret ", and the key that one is embodied in quantum cryptography is random, even if stolen taker is intercepted and captured, can not also obtain
To correct key, therefore information can not be cracked；Second, there are 2 particles of Entangled State in communicating pair hand respectively, wherein
The quantum state of one particle changes, and the quantum state of a side will change at once therewith in addition, and according to quantum theory, it is grand
Any observation and interference seen, can all change quantum state at once, cause it to cave in, therefore stealer obtained from interference due to believing
Breath has been destroyed, not original information.
But the existing experimental data for carrying out quantum communications shows, the problem of there is signal weaker during Quantum Teleportation,
Hindered so that carrying out quantum communications over long distances by reality.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of long-range quantum encryption communication system.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：The long-range quantum encryption communication system, bag
Quantum communications channel is included and module occurs for quantum, module, which occurs, for the quantum is used for the quantum communications channel quantum
Signal；The two ends for connecting the quantum communications channel are the first user terminal and second user end respectively；In quantum communications letter
At least one relay is serially connected with road, the relay includes receiving module and sending module, in the reception mould
Quantum signal enhancing module is provided between block and sending module；It is single that quantum parsing is provided with the quantum signal enhancing module
Member, quantum coding unit and quantum modulating unit；
Wherein, the quantum resolution unit is used to parse the state that quantum is received in the receiving module；
The quantum coding unit, is encoded for the quantum bit to the parsing quantum in the quantum resolution unit,
The quantum modulating unit, the quantum bit for quantum after to being formed through the quantum coding unit carries out quantum modulation,
Quantum bit with predetermined quantum state is corresponding.
Using the long-range quantum encryption communication system of above-mentioned technical proposal, it is possible to achieve long range transmission of quantum signal, letter
Number it will not weaken in transmitting procedure.
It is preferred that, the quantum modulating unit is Polarization Modulation unit；It is additionally provided with the quantum signal enhancing module
The light source cell of light pulse is generated, the light source cell is connected with the quantum resolution unit, receive the quantum parsing single
The instruction triggers of member.
It is preferred that, the receiving module and sending module are cylinder, and are split in quantum signal enhancing module
Both sides；The quantum signal enhancing module is also configured as cylinder, and the quantum signal strengthens the radius of module than described
The radius of receiving module and sending module is bigger.
It is preferred that, the surface of the receiving module and sending module uses what is used with fibre core in light communication cable
Material is identical；The surface of the quantum signal enhancing module scribbles antireflection material layers.
Brief description of the drawings
Technical scheme is further described below in conjunction with the accompanying drawings：
Fig. 1 is the long-range quantum encryption communication system structure diagram of the present invention；
Fig. 2 is the internal structure schematic diagram of the relay in Fig. 1；
Fig. 3 is the contour structures schematic diagram of the relay in Fig. 1；
Wherein：1- receiving modules；2- sending modules；3- quantum signals strengthen module；301- quantum resolution units；302- quantum are compiled
Code unit；303- quantum modulating units；304- light source cells；4- quantum communications channels；Module occurs for 5- quantum；The users of 6- first
End；7- second users end；8- relays.
Embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and further retouched in detail
State, the embodiment is only used for explaining the present invention, protection scope of the present invention is not constituted and limited.
As shown in figure 1, the long-range quantum encryption communication system, includes quantum communications channel 4 and module 5 occurs for quantum,
Module 5, which occurs, for the quantum is used for the quantum signal of quantum communications channel 4；Connect the quantum communications channel 4
Two ends are the first user terminal 6 and second user end 7 respectively；At least one relaying dress is serially connected with the quantum communications channel 4
8 are put, as shown in Fig. 2 the relay 8 includes receiving module 1 and sending module 2, in the receiving module 1 with sending mould
Quantum signal enhancing module 3 is provided between block 2；Be provided with quantum signal enhancing module 3 quantum resolution unit 301,
Quantum coding unit 302 and quantum modulating unit 303；
Wherein, the quantum resolution unit 301 is used to parse the state that quantum is received in the receiving module 1；
The quantum coding unit 302, is compiled for the quantum bit to the parsing quantum in the quantum resolution unit 301
Code,
The quantum modulating unit 303, quantum is carried out for the quantum bit to the quantum after the quantum coding unit 302 formation
Modulation, the quantum bit with predetermined quantum state is corresponding.
The quantum modulating unit 303 is Polarization Modulation unit；Generation is additionally provided with the quantum signal enhancing module 3
The light source cell 304 of light pulse, the light source cell 304 is connected with the quantum resolution unit 301, receives the Solution of Quantum
Analyse the instruction triggers of unit 301；Light source cell 304 is also connected with quantum coding unit 302.
As shown in figure 3, the receiving module 1 and sending module 2 are cylinder, and split in quantum signal enhancing
The both sides of module 3；The quantum signal enhancing module 3 is also configured as cylinder, and the radius of quantum signal enhancing module 3 is equal
Radius than the receiving module 1 and sending module 2 is bigger.
The surface of the receiving module 1 and sending module 2 is using the material used with fibre core in light communication cable
It is identical；The surface of the quantum signal enhancing module 3 scribbles antireflection material layers.
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment,
The obvious present invention, which is implemented, to be not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (4)
1. a kind of long-range quantum encryption communication system, it is characterised in that include quantum communications channel and module, institute occur for quantum
Stating quantum generation module is used for the quantum communications channel quantum signal；Connect the two ends point of the quantum communications channel
It is not the first user terminal and second user end；Be serially connected with least one relay on the quantum communications channel, it is described in
Include receiving module and sending module after device, quantum signal enhancing is provided between the receiving module and sending module
Module；Quantum resolution unit, quantum coding unit and quantum modulating unit are provided with the quantum signal enhancing module；
Wherein, the quantum resolution unit is used to parse the state that quantum is received in the receiving module；
The quantum coding unit, is encoded for the quantum bit to the parsing quantum in the quantum resolution unit,
The quantum modulating unit, the quantum bit for quantum after to being formed through the quantum coding unit carries out quantum modulation,
Quantum bit with predetermined quantum state is corresponding.
2. long-range quantum encryption communication system according to claim 1, it is characterised in that the quantum modulating unit is inclined
Shake modulating unit；Be additionally provided with the light source cell of generation light pulse in quantum signal enhancing module, the light source cell with
The quantum resolution unit is connected, and receives the instruction triggers of the quantum resolution unit.
3. long-range quantum encryption communication system according to claim 1, it is characterised in that the receiving module and transmission mould
Block is cylinder, and is split in quantum signal enhancing module both sides；The quantum signal enhancing module is also configured as circle
Cylindricality, and radius of the radius than the receiving module and sending module of quantum signal enhancing module is bigger.
4. long-range quantum encryption communication system according to claim 3, it is characterised in that the receiving module and transmission mould
The surface of block is using identical with the material that fibre core in light communication cable is used；The quantum signal strengthens the surface of module
Scribble antireflection material layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710698876.1A CN107294717A (en) | 2017-08-15 | 2017-08-15 | Long-range quantum encryption communication system |
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| CN201710698876.1A CN107294717A (en) | 2017-08-15 | 2017-08-15 | Long-range quantum encryption communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347634A (en) * | 2018-11-05 | 2019-02-15 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of communication means and communication system of quantum communications interface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1865657A1 (en) * | 2006-06-09 | 2007-12-12 | Kabushiki Kaisha Toshiba | Quantum communciation system, quantum repeater apparatus, quantum repeater method, and computer program product |
| CN106533565A (en) * | 2016-11-28 | 2017-03-22 | 工业和信息化部电信研究院 | Quantum secure communication method and apparatus |
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- 2017-08-15 CN CN201710698876.1A patent/CN107294717A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1865657A1 (en) * | 2006-06-09 | 2007-12-12 | Kabushiki Kaisha Toshiba | Quantum communciation system, quantum repeater apparatus, quantum repeater method, and computer program product |
| CN106533565A (en) * | 2016-11-28 | 2017-03-22 | 工业和信息化部电信研究院 | Quantum secure communication method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347634A (en) * | 2018-11-05 | 2019-02-15 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of communication means and communication system of quantum communications interface |
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Application publication date: 20171024 |