CN101820341A - Quantum cryptography transceiver - Google Patents
Quantum cryptography transceiver Download PDFInfo
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- CN101820341A CN101820341A CN201010107082A CN201010107082A CN101820341A CN 101820341 A CN101820341 A CN 101820341A CN 201010107082 A CN201010107082 A CN 201010107082A CN 201010107082 A CN201010107082 A CN 201010107082A CN 101820341 A CN101820341 A CN 101820341A
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Abstract
The invention relates to a quantum cryptography transceiver which comprises a transceiving and receiving device of a quantum channel and the transceiving and receiving device of a synchronization channel, wherein the transceiving and receiving device of the quantum channel and the transceiving and receiving device of the synchronization channel are connected with a transmission channel, and the transceiving and receiving device of the quantum channel and the transceiving and receiving device of the synchronization channel respectively pass through the transmission channel which is used for selectively controlling light, thereby leading the transceiving and receiving devices to be mutually distinguished on paths and leading incident light from different ports to respectively emerge from the corresponding different port and be connected with the transmission channel from a path selection device. The invention provides the quantum cryptography transceiver which has better stability and can improve the working efficiency and effectively constitute a quantum private communication network.
Description
Technical field
The present invention relates to a kind of transmitting-receiving communicator, be specifically related to a kind of quantum communications device.
Background technology
After the quantum secret communication technology produces, some company and research institution have developed preliminary quantum cryptography device, in their design, adopt a node to be emission side or recipient, and can only be both one of, i.e. emission is sent out and is separated with the recipient, such node is done emission side just can only do emission side always, is the recipient and just can only be the recipient always.From stability, arbitrary link of this key distribution system is out of joint, and device just can not be worked, and does not have interchangeable selection.And conventional apparatus is difficult to the quantum secret communication network that formation can directly be communicated with arbitrarily.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is better to have designed and developed out a kind of stability, can increase work efficiency and can effectively form the quantum cryptography transceiver of quantum secret communication network.
The present invention is achieved by the following technical solutions:
Quantum cryptography transceiver, the device that transmits and receives that comprises quantum channel, synchronizing channel transmit and receive device, the device that transmits and receives of quantum channel all is connected with transmission channel with the device that transmits and receives of synchronizing channel, described quantum channel transmit and receive device and synchronizing channel transmit and receive device respectively by being used for optionally controlling transmission line, enable difference mutually on the path, and the light of different port incident is connected with described transmission channel from the light path selector of distinguishing corresponding different port outgoing.
Quantum cryptography transceiver, described light path selector is an optical circulator.
Quantum cryptography transceiver, described light path selector is a wavelength division multiplexer.
Quantum cryptography transceiver, described light path selector is a grating.
Quantum cryptography transceiver, described transmission channel are at least one optical fiber.
Quantum cryptography transceiver, described transmission channel are free space.
The present invention couples together by an optical channel output with the emission side and the recipient of a light path selector with quantum channel, emission side and recipient with synchronizing channel couples together with another light path selector, by another optical channel output, realize that like this each node comprises emission side and recipient simultaneously, two cover key distribution devices will be arranged between two nodes, the emitter (emitter that comprises quantum channel and synchronizing channel) that is node 1 is formed a cover key distribution device with the receiving system (receiving system that comprises quantum channel and synchronizing channel) of node 2, the emitter of node 2 is formed another set of key distribution device with the receiving system of node 1, even wherein a covering device goes wrong, also can carry out key distribution between two nodes, thereby the stability of a system will be improved.This device provides the foundation for two-way cipher key distribution scheme, in addition, can receive because each node all both can have been launched also, and a plurality of like this nodes just can be organized into easily and effectively and can directly be communicated with quantum secret communication network arbitrarily.
Description of drawings
Fig. 1 is a kind of working method schematic diagram of light path selector.
Fig. 2 is the device schematic diagram of quantum cryptography transceiver.
Embodiment
Embodiment 1
Shown in accompanying drawing 1,2.
Quantum cryptography transceiver, the emitter 10 and the receiving system 20 that comprise quantum channel, the emitter 11 of synchronizing channel and receiving system 21, the emitter 11 of the emitter 10 of quantum channel and receiving system 20 and synchronizing channel is connected with transmission channel 40 by optical circulator 30 respectively with receiving system 21, and transmission channel 40 is an optical fiber.Its function is that the light to turnover carries out the separation in path, wherein a kind of implementation as shown in Figure 1, light then goes out from port 2 if enter from port one; If enter, then go out from port 3 from port 2.
The working method of all-in-one is that quantum channel emitter 10 is launched specific signal light, enters from 301 ports of optical circulator 30, comes out from 302 ports, enters the receiving system of the quantum channel in another node 50 through transmission channel 40.Synchronizing channel emitter 11 emission certain synchronization light enter 31 port 311 and come out from port 312, enter 50 through 40 again.In like manner,, enter 30 port 302 and come out, through 40 from the flashlight of another node 50 at last to 20 from port 303; , enter 31 port 312 and come out, through 40 from the synchronizable optical of node 50 at last to 21 from port 313.This is complete light path process, visible two optical circulators 30,31, its function is that the light to turnover carries out the separation in path, wherein a kind of implementation as shown in Figure 1, light then goes out from port 2 if enter from port one; If enter, then go out from port 3 from port 2.30 and the 31 emitter receiving systems with quantum channel and synchronizing channel couple together, and realize that a node promptly does emission side and be the recipient again.
The light path selector is a wavelength division multiplexer, and all the other are described with embodiment 1.
The light path selector is a grating.
Embodiment 4
The emitter 11 of the emitter 10 of quantum channel and receiving system 20 and synchronizing channel and receiving system 21 are that transmission channel 40 is connected by optical circulator 30 with the free space respectively.All the other are described with embodiment 1.
Claims (6)
1. quantum cryptography transceiver, the device that transmits and receives that comprises quantum channel, synchronizing channel transmit and receive device, the device that transmits and receives of quantum channel all is connected with transmission channel with the device that transmits and receives of synchronizing channel, it is characterized in that described quantum channel transmit and receive device and synchronizing channel transmit and receive device respectively by being used for optionally controlling transmission line, enable difference mutually on the path, and the light of different port incident is connected with described transmission channel from the light path selector of distinguishing corresponding different port outgoing.
2. quantum cryptography transceiver according to claim 1 is characterized in that described light path selector is an optical circulator.
3. quantum cryptography transceiver according to claim 1 is characterized in that described light path selector is a wavelength division multiplexer.
4. quantum cryptography transceiver according to claim 1 is characterized in that described light path selector is a grating.
5. quantum cryptography transceiver according to claim 1 is characterized in that described transmission channel is at least one optical fiber.
6. quantum cryptography transceiver according to claim 1 is characterized in that described transmission channel is a free space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010107082A CN101820341A (en) | 2010-02-03 | 2010-02-03 | Quantum cryptography transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010107082A CN101820341A (en) | 2010-02-03 | 2010-02-03 | Quantum cryptography transceiver |
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| Publication Number | Publication Date |
|---|---|
| CN101820341A true CN101820341A (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201010107082A Pending CN101820341A (en) | 2010-02-03 | 2010-02-03 | Quantum cryptography transceiver |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938678A (en) * | 2012-12-04 | 2013-02-20 | 上海朗研光电科技有限公司 | Clock synchronization device applicable to quantum communication system |
| CN103227718A (en) * | 2012-12-31 | 2013-07-31 | 安徽问天量子科技股份有限公司 | Integrated controller and control method for controlling sending and receiving of quantum secret key |
| 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 |
-
2010
- 2010-02-03 CN CN201010107082A patent/CN101820341A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938678A (en) * | 2012-12-04 | 2013-02-20 | 上海朗研光电科技有限公司 | Clock synchronization device applicable to quantum communication system |
| CN103227718A (en) * | 2012-12-31 | 2013-07-31 | 安徽问天量子科技股份有限公司 | Integrated controller and control method for controlling sending and receiving of quantum secret key |
| 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 |
| CN106533565B (en) * | 2016-11-28 | 2019-03-12 | 工业和信息化部电信研究院 | Quantum secret communication method and apparatus |
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Open date: 20100901 |