Temperature compensation for QKD systems
US7102121B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Oct 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0858
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for compensating a QKD system for variations in temperature are disclosed. One of the methods includes identifying an optimum detector gating signal timing as a function of temperature for a single-photon detector (SPD) control board in one of the QKD stations. The detector gating signal timing versus temperature information is stored in a look-up table in a memory unit. The QKD system's temperature is monitored during operation and the timing of the detector gating signal is adjusted based on the operating temperature and the corresponding timing value adjustment in the look-up table. The result is a compensated detector gating timing signal provided to the SPD that yields an optimum number of photon counts even as the temperature of the QKD station varies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.