GB201210494D0 - A quantum communication method and system - Google Patents
A quantum communication method and systemInfo
- Publication number
- GB201210494D0 GB201210494D0 GB201210494A GB201210494A GB201210494D0 GB 201210494 D0 GB201210494 D0 GB 201210494D0 GB 201210494 A GB201210494 A GB 201210494A GB 201210494 A GB201210494 A GB 201210494A GB 201210494 D0 GB201210494 D0 GB 201210494D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- equations
- gains
- light pulses
- quantum communication
- privacy amplification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Landscapes
- 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
This application concerns a quantum communication system in which a receiver performs error correction and privacy amplification. The privacy amplification is performed using an estimate of the upper bound of the information which has been intercepted by an eavesdropper, which is related to the lower bound of the secure rate (e.g. as given by equation 0.1). A parameter estimation procedure for estimating parameters (gains g0 and g1 and QBER e1) of the secure rate equation involves a numerically constrained optimization algorithm (equations 0.14-0.20) and yield-to-gain transformations (equations 0.12 and 0.13). The gains, Gj , Gj , and error probabilities Qj , Qj , used to define the constraints of the algorithm are extracted from binomial distributions (equations 0.8 and 0.9) and are calculated based on the number of light pulses Tj transmitted from a sender, the number of light pulses received at the receiver, Nj, and the number of errors detected, Ej.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB201210494A GB201210494D0 (en) | 2012-06-13 | 2012-06-13 | A quantum communication method and system |
| GB201211713A GB2503045B (en) | 2012-06-13 | 2012-07-02 | A quantum communication method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB201210494A GB201210494D0 (en) | 2012-06-13 | 2012-06-13 | A quantum communication method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB201210494D0 true GB201210494D0 (en) | 2012-07-25 |
Family
ID=46605906
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB201210494A Ceased GB201210494D0 (en) | 2012-06-13 | 2012-06-13 | A quantum communication method and system |
| GB201211713A Active GB2503045B (en) | 2012-06-13 | 2012-07-02 | A quantum communication method and system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB201211713A Active GB2503045B (en) | 2012-06-13 | 2012-07-02 | A quantum communication method and system |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB201210494D0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6396225B2 (en) | 2015-01-23 | 2018-09-26 | 株式会社東芝 | Quantum key distribution device, quantum key distribution system and program |
| JP6490613B2 (en) | 2016-03-14 | 2019-03-27 | 株式会社東芝 | COMMUNICATION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, QUANTUM KEY DISTRIBUTION METHOD, AND PROGRAM |
| JP6926042B2 (en) | 2018-09-19 | 2021-08-25 | 株式会社東芝 | Key generator, key generator and program |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008140291A2 (en) * | 2007-05-11 | 2008-11-20 | Mimos Berhad | Deterministic rendering for practical quantum cryptography |
-
2012
- 2012-06-13 GB GB201210494A patent/GB201210494D0/en not_active Ceased
- 2012-07-02 GB GB201211713A patent/GB2503045B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| GB2503045B (en) | 2014-05-28 |
| GB2503045A (en) | 2013-12-18 |
| GB201211713D0 (en) | 2012-08-15 |
| GB2503045A9 (en) | 2014-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AT | Applications terminated before publication under section 16(1) |