QKD system detector autocalibration based on bit-error rate

Details QKD system detector autocalibration based on bit-error rate QKD system detector autocalibration based on bit-error rate

2005-04-20

2009-02-17

Jung, David Y (Department: 2134)

Cryptography

Key management

Key distribution

C380S277000, C380S255000

Reexamination Certificate

active

07492904

ABSTRACT:
In a quantum key distribution (QKD) system, a method of autocalibrating the gating of a single-photon detector (SPD) unit is disclosed. The method includes exchanging photon signals (P1, P2) to establish a bit-error rate (BER). The method also includes performing a detector gate signal timing scan (314) that varies the signal arrival time (T) to establish an optimum arrival time (TMIN) corresponding to an optimum (e.g., minimum) BER. Detector gate signal timing dithering is then performed (318). This involves varying the detector gate signal arrival times about the optimum arrival time to ensure that the QKD system operates at or near an optimum BER.

REFERENCES:
patent: 4469942 (1984-09-01), Srivastava et al.
patent: 6236488 (2001-05-01), Shimizu et al.
patent: 6445478 (2002-09-01), Shimizu et al.
patent: 6462825 (2002-10-01), Wiebesick et al.
patent: WO 9404889 (1994-03-01), None
Security Aspects of the Authentication Used in Quantum Cryptography Cederlof, J.; Larsson, J.-A.; Information Theory, IEEE Transactions on vol. 54, Issue 4, Apr. 2008 pp. 1735-1741.
Unconditionally secure key distribution in higher dimensions by depolarization Hoi Fung Chau; Information Theory, IEEE Transactions on vol. 51, Issue 4, Apr. 2005 pp. 1451-1468.
Key Distribution Using Dual Quantum Channels Jin, Di; Verma, Pramode; Kartalopoulos, Stamatios; Information Assurance and Security, 2008. ISIAS '08. Fourth International Conference on Sep. 8-10, 2008 pp. 327-332.
Stucki et al, “Photon counting for quantum key distribution with Peltier cooled InGaAs/InP”, http://arxiv.org quant-ph/0106007v1, pp. 1-18, Jun. 1, 2001.

Affiliated with

Also associated with

Rating

QKD system detector autocalibration based on bit-error rate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with QKD system detector autocalibration based on bit-error rate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QKD system detector autocalibration based on bit-error rate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4096204