CN104516816B - Primary Component test method in a kind of quantum key distribution system - Google Patents
Primary Component test method in a kind of quantum key distribution system Download PDFInfo
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- CN104516816B CN104516816B CN201310468678.8A CN201310468678A CN104516816B CN 104516816 B CN104516816 B CN 104516816B CN 201310468678 A CN201310468678 A CN 201310468678A CN 104516816 B CN104516816 B CN 104516816B
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Abstract
The invention belongs to Quantum Secure Communication fields, it proposes Primary Component test method in a kind of quantum key distribution system, comprising the following steps: step 1: determining the crucial test parameter for needing Primary Component and each Primary Component in quantum key distribution system to be tested；Step 2: selecting main transformer parameter in crucial test parameter, remaining parameter is used as from variable element；Step 3: the value of each main transformer parameter being arranged by Human-machine Control interface, tests from variable element；Step 4: database is written into test data；Step 5: test data in analytical database, display analysis result；Step 6: return step three, which continues to test, if necessary is judged to analysis result；Step 7: it is for statistical analysis to all test datas in database, obtain test result.The present invention is based on the analysis to test data as a result, to control crucial test parameter, the blindness in test is eliminated to a certain extent, testing efficiency is improved, reduces testing cost.
Description
Technical field
The invention belongs to Quantum Secure Communication fields, and in particular to Primary Component in a kind of quantum key distribution system
Test method.
Background technique
Quantum communications are the new interdisciplinary that recent two decades grow up, and are quantum theory and that information theory combines is new
Research field.This recent subject gradually from theory to experiment, and develops to functionization, and the information of highly effective and safe transmits day
Benefit is concerned by people.
Physically, quantum communications are construed as under the physical limit, the high performance communication realized using quantum effect.
In informatics, we then think that quantum communications are to utilize quantum-mechanical basic principle (the unclonable principle of such as quantum state and amount
The measurement of sub- state is collapsed property etc.) or utilize the quantized systems particular attributes such as quantum state Teleportation and quantum measurement
Method is transmitted to complete the information between two places.
Quanta cryptology technique based on quantum key distribution (QKD) agreement is the most important reality of quantum communications at this stage
One of border application.Traditional cryptography is the cipher system based on mathematics, and quantum cryptography is based on quantum mechanics, it
Safety be built upon uncertainty principle, on the physical characteristics such as unclonable and quantum coherence of quantum, be proved to
It is perfectly safe.
QKD system is a kind of quantum communication system based on QKD agreement, due to wherein generating, transmitting and received quantum
The not reproducible measurement of information determines that QKD system test is different from the particularity of classical communication system testing.
On the one hand, QKD system operation result is between each Primary Component in QKD system and each skill of Primary Component
The result influence each other between art index, mutually restricted.For example detectivity is abnormal, it is likely to optical source wavelength exception, bottom width
Caused by increasing or the effective gate-width of detector reduce, it is therefore desirable to these indexs be monitored in real time and be tested, by survey
The statistical analysis of examination data finds and verifies the correlation between each Primary Component and between each technical indicator of Primary Component
Property, to find system defect, debugging system performance and improve system effectiveness.
On the other hand, since the difficulty of quantum signal preparation at this stage makes quantum signal preparation cost far more than classics letter
Number preparation cost, which dictates that the testing cost of QKD system is far longer than the testing cost of classical communication system.
The test of current QKD system ignores above-mentioned particularity, and method is mostly the classical communication system for continuing to continue to use
The test step by step method of system, i.e., gradually individual equipment is tested, after the completion of testing respectively, after forming quantum key distribution system
It also needs to carry out each device unified test.Due to the particularity of QKD system, this test step by step method will cause as follows
Consequence:
First is that making it due to ignoring influence of the correlation in system between each Primary Component to the results of running
Test process lacks systematicness, and test result lacks network analysis, so that the test result obtained be made often to have one-sidedness.
Second is that considerably increasing the number of retest, the time is wasted, considerably increases testing cost.
Therefore, to those skilled in the art, finding Primary Component test method in a kind of suitable QKD system becomes
Urgent problem to be solved.
Summary of the invention
In view of the above-mentioned problems, the present invention proposes Primary Component test method in a kind of quantum key distribution system, including with
Lower step:
Step 1: determine that the crucial of the Primary Component and each Primary Component that need in quantum key distribution system to be tested is surveyed
Try parameter；
Step 2: selecting main transformer parameter in crucial test parameter, remaining parameter is used as from variable element；
Step 3: the value of each main transformer parameter being arranged by Human-machine Control interface, tests from variable element；
Step 4: database is written into test data；
Step 5: test data in analytical database, display analysis result；
Step 6: return step three, which continues to test, if necessary is judged to analysis result；
Step 7: it is for statistical analysis to all test datas in database, obtain test result.
The Primary Component in need quantum key distribution system to be tested in the step 1 includes at least following one
Kind is several: single-photon detector inveigles state light source, optical module, key negotiation module；It needs crucial test parameter to be tested
Including at least following one or more: effective gate-width, dark counting, the detectivity of single-photon detector inveigle the bottom of state light source
Width, halfwidth, wavelength, the light loss of optical module and key negotiation module at code rate, error rate and feedback efficiency.
The method of main transformer parameter is selected in the step 2 are as follows: if the crucial test parameter of a Primary Component is more than one
It is a, then at least using a test parameter as main transformer parameter in the parameter with correlation；If a Primary Component only has
One crucial test parameter, then this Primary Component does not set main transformer parameter.
The method from variable element is tested in the step 3 are as follows: establish the test platform for having Human-machine Control interface, pass through
The value of the Human-machine Control interface setting main transformer parameter of test platform, so that the main transformer parameter of Primary Component is controlled, in each pass
In the case that the main transformer parameter of key device determines, test from variable element.
Test data in the step 4 is the value of corresponding main transformer parameter and from variable element in test each time
Test value.
The method of test data is analyzed in the step 5 are as follows: by the correlation of analysis of key test parameter, especially
Correlation between functional key test parameter and the crucial test parameter that quantum key distribution system performance can be represented, analysis
Statistical property of each key test parameter in each value interval.
Further, method analysis result judged in the step 6 are as follows: according to the pass obtained in step 5
The correlation of key test parameter and each crucial test parameter judge to test number in database in the statistical property of each value interval
According to integrality, referring to test purpose, if it find that the main transformer parameter value of test also in need combines, then return step three after
Continuous test.
Preferably, the test result according to obtained in test target and the step 7, if necessary to further test, then
Return step two changes main transformer parameter, continues to test.
The beneficial effects of the present invention are:
1. main transformer parameter is arranged by Human-machine Control interface, only test is from variable element, and it reduce the complexity of test process
Property；
2. being eliminated in test to a certain extent based on the analysis to test data as a result, to control crucial test parameter
Blindness, improve testing efficiency, reduce testing cost；
3. analyzing the correlation between each Primary Component and same Primary Component by the test data recorded in database
Each crucial test parameter between correlation, which increase the reliability of test result and credibilities.
Detailed description of the invention
Fig. 1 QKD system human-computer interactive control test platform architecture figure.
Primary Component test method flow chart in Fig. 2 quantum key distribution system.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
To realize this patent scheme, QKD system human-computer interactive control as shown in Fig. 1 is established in this patent embodiment
Test platform.This test platform is built in QKD network in the corresponding QKD terminal for realizing quantum key distribution, mainly group
Mould is analyzed at including QKD equipment, key negotiation module, classical gateway, human-computer interactive control interface, test database and data
Block.QKD equipment, key negotiation module and the classical gateway module intrinsic for QKD terminal.Human-computer interactive control interface is used for
Pass through the value of the related test parameters of each Primary Component of human-computer interactive control QKD equipment in test process；Test database note
Record the value and test value of corresponding test parameter in test process；Data analysis module carries out the test data in database
Data analysis and statistics, provide reference for the value of related test parameters in test process, and pass through the analysis to test data
Test result is obtained with statistics.
Attached drawing 2 is Primary Component test method flow chart in the present embodiment quantum key distribution system.In conjunction with attached drawing 2 we
By the specific implementation step of Primary Component test method in the present embodiment quantum key distribution system, details are as follows:
1. determining the crucial test parameter for needing Primary Component and each Primary Component in QKD system to be tested；
Need the Primary Component in QKD system to be tested to include at least following one or more: single-photon detector lures
Deceive state light source, optical module, key negotiation module；It needs crucial test parameter to be tested to include at least following one kind or several
Kind: effective gate-width, dark counting, the detectivity of single-photon detector inveigle bottom width, the halfwidth, wavelength of state light source, optical module
Light loss and key negotiation module at code rate, error rate and feedback efficiency.
In the present embodiment, needing Primary Component to be tested is single-photon detector and key negotiation module, key test ginseng
Number be single-photon detector effective gate-width, dark counting and detectivity and key negotiation module at code rate and error rate.
2. selecting main transformer parameter in crucial test parameter, remaining parameter is used as from variable element；
In the present embodiment, using effective gate-width of single-photon detector in above-mentioned crucial test parameter as main transformer parameter,
Remaining parameter is used as from variable element.
3. the value of each main transformer parameter is arranged by Human-machine Control interface, test from variable element；
Different effective gate-widths is set for the single-photon detector in QKD system by human-computer interactive control interface, is run
System tests remaining from variable element.
4. database is written in test data；
Corresponding database table is established, the setting value of main transformer parameter and its corresponding be written from the test value of variable element are surveyed
Try database.
5. test data in analytical database, display analysis result；
According to the test data recorded in test database, the correlation of the above-mentioned each crucial test parameter value of analysis is calculated
Property, the correlation between especially functional crucial test parameter and the crucial test parameter that QKD system performance can be represented, analysis
Statistical property of each key test parameter in each value interval.
In the present embodiment, effective gate-width, dark counting and the detectivity of weight analysis single-photon detector these three are functional
Crucial test parameter is with the key negotiation module that can represent QKD system performance at the correlation between code rate.If it find that having
Imitate the value and, then statistical property according to test data analysis between the two stronger at code rate dependence on parameter of gate-width parameter.
6. a pair analysis result judges that return step three continues to test if necessary；
During being analyzed and counted to test data, if it find that key test parameter obtained is (especially
Main transformer parameter) value interval test data it is imperfect, referring to test purpose, if it find that the main transformer parameter of test also in need
Valued combinations, then return step 3 continues to test.
7. all test datas in pair database are for statistical analysis, test result is obtained.
All test datas in database are carried out with whole analysis statistics, according to test target, obtains test result；Such as
Fruit needs further test, then return step 2, changes main transformer parameter, continues to test.
It should be noted that above-mentioned specific embodiment is exemplary, and under above-mentioned introduction of the invention, art technology
Personnel can carry out various improvement and deformations on the basis of the above embodiments, and these are improved or deformation fall in it is of the invention
In protection scope.
It will be understood by those skilled in the art that specific descriptions above are intended merely to explain the purpose of the present invention, not use
In the limitation present invention.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (5)
1. Primary Component test method in a kind of quantum key distribution system, which comprises the following steps:
Step 1: the crucial test ginseng of the Primary Component and each Primary Component needed in quantum key distribution system to be tested is determined
Number；
Step 2: selecting main transformer parameter in crucial test parameter, remaining parameter is used as from variable element；
Step 3: the value of each main transformer parameter being arranged by Human-machine Control interface, tests from variable element；
Step 4: database is written into test data；
Step 5: test data in analytical database, display analysis result；
Step 6: return step three, which continues to test, if necessary is judged to analysis result；
Step 7: it is for statistical analysis to all test datas in database, obtain test result；
The Primary Component in need quantum key distribution system to be tested in the step 1 include at least following one kind or
Several: single-photon detector inveigles state light source, optical module, key negotiation module；It needs crucial test parameter to be tested at least
Including following one or more: effective gate-width, dark counting, the detectivity of single-photon detector, the bottom width of trick state light source, half
Gao Kuan, wavelength, the light loss of optical module and key negotiation module at code rate, error rate and feedback efficiency；
The method of test data is analyzed in the step 5 are as follows: functional crucial by the correlation of analysis of key test parameter
Correlation between test parameter and the crucial test parameter that can represent quantum key distribution system performance analyzes each crucial test
Statistical property of the parameter in each value interval；
The method that analysis result is judged in the step 6 are as follows: according to the phase of the crucial test parameter obtained in step 5
Closing property and each crucial test parameter judge the integrality of test data in database, join in the statistical property of each value interval
According to test purpose, if it find that the main transformer parameter value of test also in need combines, then return step three continues to test.
2. Primary Component test method in a kind of quantum key distribution system as described in claim 1, which is characterized in that described
The method of main transformer parameter is selected in step 2 are as follows: if the crucial test parameter of a Primary Component is more than one, have
At least using a test parameter as main transformer parameter in the parameter of correlation；If only one the key test of Primary Component
Parameter, then this Primary Component does not set main transformer parameter.
3. Primary Component test method in a kind of quantum key distribution system as described in claim 1, which is characterized in that described
The method from variable element is tested in step 3 are as follows: establish the test platform for having Human-machine Control interface, pass through the people of test platform
Machine control interface sets the value of main transformer parameter, so that the main transformer parameter of Primary Component is controlled, in the main transformer of each Primary Component
In the case that parameter determines, test from variable element.
4. Primary Component test method in a kind of quantum key distribution system as described in claim 1, which is characterized in that described
Test data in step 4 is the value of corresponding main transformer parameter and the test value from variable element in test each time.
5. Primary Component test method in a kind of quantum key distribution system as described in claim 1, it is characterised in that: according to
Test result obtained in test target and the step 7, if necessary to further test, then return step two, change main transformer
Parameter continues to test.
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| CN102608464A (en) * | 2012-03-21 | 2012-07-25 | 山东电力集团公司济南供电公司 | Modularized automatic test assembly system of rely protection device and test method of modularized automatic test assembly system |
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| JP2008505590A (en) * | 2004-07-02 | 2008-02-21 | マジック テクノロジーズ，インコーポレーテッド | QKD cascade network with loopback function |
| US20100241912A1 (en) * | 2006-04-04 | 2010-09-23 | Magiq Technologies, Inc. | Fast bit-error rate calculation mode for QKD systems |
| CN102185254B (en) * | 2011-03-15 | 2012-10-03 | 中国科学技术大学 | Single photon source device manufacturing method |
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| CN102608464A (en) * | 2012-03-21 | 2012-07-25 | 山东电力集团公司济南供电公司 | Modularized automatic test assembly system of rely protection device and test method of modularized automatic test assembly system |
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| QKD系统中密钥协商算法和探测技术的研究;吴张斌;《中国优秀硕士学位论文全文数据库信息科技辑》;20110315(第3期);第34-39页 |
| 相位编码量子密钥分发系统的电子学设计;杨阳，王永纲等;《电子学报》;20111130(第11期);第2608-2609页 |
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