CN106341191B - High speed QKD system implementation method and transmitting terminal based on low speed DAC control modulator - Google Patents
High speed QKD system implementation method and transmitting terminal based on low speed DAC control modulator Download PDFInfo
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- CN106341191B CN106341191B CN201610750781.5A CN201610750781A CN106341191B CN 106341191 B CN106341191 B CN 106341191B CN 201610750781 A CN201610750781 A CN 201610750781A CN 106341191 B CN106341191 B CN 106341191B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
- H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
- H04B10/50577—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the phase of the modulating signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
- H04B10/5059—Laser transmitters using external modulation using a feed-forward signal generated by analysing the optical or electrical input
- H04B10/50597—Laser transmitters using external modulation using a feed-forward signal generated by analysing the optical or electrical input to control the phase of the modulating signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses high speed QKD system implementation method and transmitting terminal based on low speed DAC control modulator, the synchronization light laser of the FPGA control triggering bMHz of transmitting terminal generates the synchronizable optical of bMHz；N-th quantum light laser, n-th modulator and n-th DAC form the road N；While FPGA control triggering synchronizable optical, the FPGA of transmitting terminal is triggered the road N quantum light laser in a manner of poll and shone；The triggering frequency of the road n quantum light is b/n MHz；Frequency control modulator per DAC all the way equally with b/n MHz is modulated to per quantum light all the way respectively, and modulation intelligence is returned to upper computer module by FPGA；The synchronizable optical and quantum light of transmitting terminal are by being sent to receiving end by main line after wavelength division multiplexer progress light combination；Transmitting terminal of the present invention triggers the road n quantum light by poll, controls modulator using low speed DAC, realizes high speed QKD system.
Description
Technical field
This patent is related to controlling modulator realization high speed QKD system and method using low speed DAC more particularly to one kind is based on
The high speed QKD system implementation method and transmitting terminal of low speed DAC control modulator.
Background technique
Quantum communications have it is high-efficient, eavesdrop knowability, communication security is good, no electromagenetic wave radiation, communicate good concealment
Equal good characteristics.With the continuous development of traffic rate, demand of the people to high speed QKD system is more more and more urgent.Traditional QKD system
System sending and receiving end uses single modulator respectively, as shown in Figure 1, it is complete by DAC to load different voltage values to modulator by FPGA
Pairs of quantum light modulation, this determines that the speed of service of QKD by modulating speed, to improve the speed of service of QKD, then needs
Faster modulation rate needs the DAC device of higher speed；If example QKD system working frequency is aMHz, at this time sending and receiving end DAC
Working frequency is aMHz, and the frequency of modulator (phase/polarization) is aMHz；To QKD system working frequency is promoted to
When bMHz is even higher, mutually bMHz is even higher in requisition for being promoted to for the working frequency of DAC, the frequency of modulator (phase/polarization)
Rate is that bMHz is even higher；A and b is used to the numerical value of mark working frequency, and value is determined according to real system；If continuing to mention
High QKD system working frequency, then the speed needs of DAC device are further increased and can just be met the requirements, this is to existing DAC device
It is greatly to challenge, or even be unable to satisfy requirement.
Summary of the invention
This patent problem to be solved is to be unable to complete High Speed Modulation for the lower DAC device of speed to limit high speed
The deficiency that QKD system is realized proposes a kind of high speed QKD system implementation method and transmitting terminal based on low speed DAC control modulator,
This patent is compared with original QKD system for controlling completion modulation using single low speed DAC using transmitting-receiving both ends, in working frequency
On can promote n times, such as using aMHz DAC control complete modulation (phase/polarization), then the QKD system can realize n*aMHz's
Operating rate.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: the high speed based on low speed DAC control modulator
QKD system implementation method, it is characterised in that the following steps are included:
The first step generates the synchronizable optical of bMHz by the synchronization light laser of the FPGA control triggering bMHz of transmitting terminal；
Second step, the quantum light laser be it is N number of, modulator be it is N number of, DAC is also N number of；First quantum ray laser
Device, first modulator and first DAC form the first via；Second quantum light laser, second modulator and
Two DAC form the second tunnel；And so on, n-th quantum light laser, n-th modulator and n-th DAC form N
Road；While the FPGA control triggering synchronizable optical of transmitting terminal, the FPGA of transmitting terminal is triggered the road N quantum light in a manner of poll and swashed
Light device shines；The triggering frequency of the road n quantum light is b/n MHz；
Third step, the triggering frequency with transmitting terminal per quantum light all the way is that b/n MHz is corresponding, same per DAC all the way
It is modulated to per quantum light all the way with the frequency control modulator of b/n MHz, and is returned modulation intelligence respectively by FPGA
It is transmitted to upper computer module；
The synchronizable optical of 4th step, transmitting terminal is connect with quantum light by being sent to after wavelength division multiplexer progress light combination by main line
Receiving end；Light on the main line is that a synchronizable optical is followed by a quantum light, two adjacent sync light and two adjacent amounts
It is 1/b us between sub-light；I.e. QKD system frequency is bMHz.
Further, the 5th step, (road the n quantum light at relative transmission end is not using with b/n MHz by the phase modulation DAC of receiving end
With modulation, receiving end has used n identical modulation) frequency control and receive the quantum light that the modulator at end receives receiving end
It is modulated, and modulation intelligence is returned to the upper computer module of receiving end；
Further include the 6th step, the upper computer module of the upper computer module of transmitting terminal and receiving end to the modulation intelligence received into
Row obtains final security key to the post-processing operation of base, error correction, secrecy amplification.
Further, when the triggering of the 1st synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 1st road quantum light laser
It shines；When the triggering of the 2nd synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 2nd road quantum light laser and shines；N-th is same
When walking light triggering, the n-th road quantum light laser of triggering shines；When the N+1 synchronizable optical triggering, first via quantum ray laser is triggered
Device shines；And so on.
To realize the above-mentioned technical purpose, the another technical solution that the present invention takes are as follows: one kind is adjusted based on low speed DAC control
The high speed QKD system transmitting terminal of device processed, including FPGA, synchronous light laser, quantum light laser, modulator, DAC, wavelength-division are multiple
With device and upper computer module；FPGA triggers synchronous light laser generation synchronizable optical for controlling；FPGA is also used to through DAC to tune
Device processed loads different voltage values, to complete the quantum light modulation issued to quantum light laser；Wavelength division multiplexer is used for will be same
Receiving end is sent to by main line after step light and quantum light progress light combination；It is characterized by:
The quantum light laser be it is N number of, modulator be it is N number of, DAC is also N number of；First quantum light laser, first
A modulator and first DAC form the first via；Second quantum light laser, second modulator and second DAC
Form the second tunnel；And so on, n-th quantum light laser, n-th modulator and n-th DAC form the road N；FPGA is logical
It crosses first via DAC and loads different voltage values to first via modulator, to complete the amount issued to first via quantum light laser
Sub-light modulation；FPGA loads different voltage values to No. second modulator by the second road DAC, to complete to the second road quantum light
The quantum light modulation that laser issues；And so on, FPGA loads different voltage to the road N modulator by the road N DAC
Value, to complete the quantum light modulation issued to the road N quantum light laser；FPGA is also used to modulated per quantum all the way
The modulation intelligence of light returns to upper computer module, and upper computer module is used to complete amplifying to base, error correction and secrecy for transmitting-receiving both ends
Last handling process.
Further, when the triggering of the 1st synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 1st road quantum light laser
It shines；When the triggering of the 2nd synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 2nd road quantum light laser and shines；N-th is same
When walking light triggering, the n-th road quantum light laser of triggering shines；When the N+1 synchronizable optical triggering, first via quantum ray laser is triggered
Device shines；And so on.
Of the invention high speed QKD system implementation method and transmitting terminal based on low speed DAC control modulator is based on low speed
DAC device control modulator (phase/polarization) realize high speed QKD system implementation method and transmitting terminal.Transmitting terminal of the present invention
Use synchronizable optical all the way, the quantum key distribution structure of the road n quantum light, n phase-modulator and n low speed DAC；One transmitting
The road n quantum light is triggered by poll in end, controls modulator (phase/polarization) using low speed DAC, realizes high speed QKD system.
The transmitting terminal for the high speed QKD system that the present invention realizes controls n modulator, receiving end using the road n low speed DAC respectively
Still a modulator is controlled using DAC all the way, relatively original QKD system has used the road n quantum light laser, n in transmitting terminal
Road DAC and n modulator, as shown in Figure 2.Modulation is completed using single low speed DAC control using transmitting-receiving both ends with original
QKD system compare, n times can be promoted in working frequency, such as using aMHz DAC control complete modulation (phase/polarization), then
The QKD system can realize the operating rate of n*aMHz.
Detailed description of the invention
Fig. 1 is the QKD system block diagram that sending and receiving end uses single-stage modulator in the prior art.
Fig. 2 is system block diagram of the invention.
The following further describes the specific embodiments of the present invention with reference to the drawings.
Specific embodiment
Embodiment 1
Referring to fig. 2, based on the high speed QKD system implementation method of low speed DAC control modulator, comprising the following steps:
The first step generates the synchronizable optical of bMHz by the synchronization light laser of the FPGA control triggering bMHz of transmitting terminal；
Second step, the quantum light laser be it is N number of, modulator be it is N number of, DAC is also N number of；First quantum ray laser
Device, first modulator and first DAC form the first via；Second quantum light laser, second modulator and
Two DAC form the second tunnel；And so on, n-th quantum light laser, n-th modulator and n-th DAC form N
Road；While the FPGA control triggering synchronizable optical of transmitting terminal, the FPGA of transmitting terminal is triggered the road N quantum light in a manner of poll and swashed
Light device shines；For example, transmitting terminal FPGA triggers the 1st road quantum light laser hair when the triggering of the 1st synchronizable optical of transmitting terminal
Light；When the triggering of the 2nd synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 2nd road quantum light laser and shines；N-th is synchronous
When light triggers, the n-th road quantum light laser of triggering shines；When the N+1 synchronizable optical triggering, first via quantum light laser is triggered
It shines；And so on；The triggering frequency of the road n quantum light is b/n MHz；
Third step, the triggering frequency with transmitting terminal per quantum light all the way is that b/n MHz is corresponding, same per DAC all the way
It is modulated to per quantum light all the way with the frequency control modulator of b/n MHz, and is returned modulation intelligence respectively by FPGA
It is transmitted to upper computer module；
The synchronizable optical of 4th step, transmitting terminal is connect with quantum light by being sent to after wavelength division multiplexer progress light combination by main line
Receiving end；Light on the main line is that a synchronizable optical is followed by a quantum light, two adjacent sync light and two adjacent amounts
It is 1/b us between sub-light；I.e. QKD system frequency is bMHz；
5th step, with b/n MHz, (road the n quantum light at relative transmission end uses different modulating to the modulation DAC of receiving end, connects
Receiving end has used n identical modulation) frequency control and receive the modulator at end the quantum light that receiving end receives be modulated,
And modulation intelligence is returned to the upper computer module of receiving end；
The upper computer module of transmitting terminal and the upper computer module of receiving end to the modulation intelligence received carry out to base, error correction,
Maintain secrecy the post-processing operation amplified, and obtains final security key.
Embodiment 2
Referring to fig. 2, based on the high speed QKD system transmitting terminal of low speed DAC control modulator for realizing described in embodiment 1
The high speed QKD system implementation method based on low speed DAC control modulator, something in common is no longer described in detail.Based on low speed DAC
The high speed QKD system transmitting terminal of control modulator includes FPGA, synchronous light laser, quantum light laser, modulator, DAC, wave
Division multiplexer and upper computer module；FPGA triggers synchronous light laser generation synchronizable optical for controlling；FPGA is also used to pass through DAC
Different voltage values is loaded, to modulator to complete the quantum light modulation issued to quantum light laser；Wavelength division multiplexer is used for
Receiving end will be sent to by main line after synchronizable optical and quantum light progress light combination；The quantum light laser be it is N number of, modulator is
N number of, DAC is also N number of；First quantum light laser, first modulator and first DAC form the first via；Second
Quantum light laser, second modulator and second DAC form the second tunnel；And so on, n-th quantum light laser,
N-th modulator and n-th DAC form the road N；FPGA loads different electricity to first via modulator by first via DAC
Pressure value, to complete the quantum light modulation issued to first via quantum light laser；FPGA is modulated by the second road DAC to the second tunnel
Device loads different voltage values, to complete the quantum light modulation issued to the second road quantum light laser；And so on, FPGA is logical
It crosses the road N DAC and loads different voltage values to the road N modulator, to complete the quantum light issued to the road N quantum light laser
Modulation；FPGA is also used to the modulated phase information per quantum light all the way returning to upper computer module, upper computer module
For completing the last handling process to base, error correction and secrecy amplification at transmitting-receiving both ends.
Claims (5)
1. a kind of high speed QKD system implementation method based on low speed DAC control modulator, it is characterised in that the following steps are included:
The first step generates the synchronizable optical of bMHz by the synchronization light laser of the FPGA control triggering bMHz of transmitting terminal；
Second step, quantum light laser are n, and modulator is n, DAC is also n；First quantum light laser, first
Modulator and first DAC form the first via；Second quantum light laser, second modulator and second DAC group
At the second tunnel；And so on, n-th of quantum light laser, n-th of modulator and n-th of DAC form the n-th tunnel；In transmitting terminal
FPGA control triggering synchronizable optical while, the FPGA of transmitting terminal triggered in a manner of poll the road n quantum light laser shine；n
The triggering frequency of road quantum light is b/n MHz；
Third step, the triggering frequency with transmitting terminal per quantum light all the way is that b/n MHz is corresponding, per DAC all the way equally with b/
The frequency control modulator of nMHz is modulated to per quantum light all the way respectively, and is returned to modulation intelligence by FPGA
Position machine module；
4th step, the synchronizable optical and quantum light of transmitting terminal are by being sent to reception by main line after wavelength division multiplexer progress light combination
End；Light on the main line is that a synchronizable optical is followed by a quantum light, two adjacent sync light and two adjacent quantum
It is 1/b us between light.
2. the high speed QKD system implementation method according to claim 1 based on low speed DAC control modulator, feature exist
In:
5th step, the quantum that the modulation DAC of receiving end receives receiving end with the modulator that the frequency of b/n MHz controls and receives end
Light is modulated, and modulation intelligence is returned to the upper computer module of receiving end；6th step, the upper computer module of transmitting terminal and connects
The upper computer module of receiving end obtain final the post-processing operation of base, error correction, secrecy amplification to the modulation intelligence received
Security key.
3. the high speed QKD system implementation method according to claim 1 or 2 based on low speed DAC control modulator, feature
Be: when the triggering of the 1st synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 1st road quantum light laser and shines；Work as transmitting terminal
The 2nd synchronizable optical triggering when, transmitting terminal FPGA trigger the 2nd road quantum light laser shine；When n-th of synchronizable optical triggering, touching
The n-th road quantum light laser is sent out to shine；When (n+1)th synchronizable optical triggering, triggering first via quantum light laser shines；With such
It pushes away.
4. a kind of high speed QKD system for realizing based on low speed DAC control modulator described in claims 1 or 2 or 3 is realized
The high speed QKD system transmitting terminal based on low speed DAC control modulator of method, including FPGA, synchronous light laser, quantum light swash
Light device, modulator, DAC, wavelength division multiplexer and upper computer module；FPGA triggers synchronous light laser generation synchronization for controlling
Light；FPGA is also used to load different voltage values to modulator by DAC, to complete the quantum light issued to quantum light laser
Modulation；Wavelength division multiplexer is used to that receiving end will to be sent to by main line after synchronizable optical and quantum light progress light combination；
It is characterized by: the quantum light laser is n, modulator is n, DAC is also n；First quantum ray laser
Device, first modulator and first DAC form the first via；Second quantum light laser, second modulator and
Two DAC form the second tunnel；And so on, n-th of quantum light laser, n-th of modulator and n-th of DAC composition n-th
Road；FPGA loads different voltage values to first via modulator by first via DAC, to complete to first via quantum light laser
The quantum light modulation of sending；FPGA loads different voltage values to No. second modulator by the second road DAC, to complete to second
The quantum light modulation that road quantum light laser issues；And so on, FPGA is different to No. n-th modulator load by the n-th road DAC
Voltage value, to complete the quantum light modulation that issues to the n-th road quantum light laser；FPGA is also used to modulated per all the way
The modulation intelligence of quantum light return to upper computer module, upper computer module be used to complete to receive and dispatch both ends to base, error correction and guarantor
The last handling process of close amplification.
5. the high speed QKD system transmitting terminal according to claim 4 based on low speed DAC control modulator, it is characterised in that:
When the triggering of the 1st synchronizable optical of transmitting terminal, transmitting terminal FPGA triggers the 1st road quantum light laser and shines；When the 2nd of transmitting terminal the
When a synchronizable optical triggers, transmitting terminal FPGA triggers the 2nd road quantum light laser and shines；When n-th of synchronizable optical triggering, triggering n-th
Road quantum light laser shines；When (n+1)th synchronizable optical triggering, triggering first via quantum light laser shines；And so on.
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| CN201510910924 | 2015-12-10 | ||
| CN201510910924X | 2015-12-10 |
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| CN106341191B true CN106341191B (en) | 2019-01-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108306678B (en) * | 2017-12-28 | 2020-10-13 | 国家电网有限公司 | Single photon source single photon output system |
| CN108254087B (en) * | 2017-12-28 | 2021-05-21 | 国家电网有限公司 | Single photon detector system and control method |
| CN108400819B (en) * | 2018-01-19 | 2020-02-14 | 航天科工防御技术研究试验中心 | Quantum secret communication defense control method and system based on DSP |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006124208A1 (en) * | 2005-05-17 | 2006-11-23 | Lucent Technologies Inc. | Multi-channel transmission of quantum information |
| CN101827149A (en) * | 2010-02-10 | 2010-09-08 | 南通墨禾量子科技发展有限公司 | Quantum secrete telephone |
| CN205336289U (en) * | 2015-12-10 | 2016-06-22 | 安徽问天量子科技股份有限公司 | High -speed QKD system transmitting terminal based on low -speed DAC controls modulator |
-
2016
- 2016-08-30 CN CN201610750781.5A patent/CN106341191B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006124208A1 (en) * | 2005-05-17 | 2006-11-23 | Lucent Technologies Inc. | Multi-channel transmission of quantum information |
| CN101827149A (en) * | 2010-02-10 | 2010-09-08 | 南通墨禾量子科技发展有限公司 | Quantum secrete telephone |
| CN205336289U (en) * | 2015-12-10 | 2016-06-22 | 安徽问天量子科技股份有限公司 | High -speed QKD system transmitting terminal based on low -speed DAC controls modulator |
Non-Patent Citations (1)
| Title |
|---|
| 多用户量子通信方案及协议研究;刘晓慧;《中国博士学位论文全文数据库》;20131231(第11期);全文 |
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