Polarization control algorithm for QKD systems

Autor:	E E Mekhtiev, I S Gerasin, N V Rudavin, A V Duplinsky, Y V Kurochkin
Rok vydání:	2021
Předmět:	History Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 2086:012092
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/2086/1/012092
Popis:	The crucial task for polarization-encoding fiber QKD is to compensate polarization drift occurring in a quantum channel. To solve this problem, the receiver usually uses a polarization controller. For proper operation, this device must be efficiently managed in real-time. In this work, a gradient-descent-based algorithm is proposed to solve this problem. The algorithm was implemented and tested on a QRate commercial QKD fiber system, that utilizes BB84-protocol. Low and stable QBER has been obtained during a day of continuous operation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4af9f2c6a5b1fb7e2744ca5f31a0e391 https://doi.org/10.1088/1742-6596/2086/1/012092 Zobrazit plný text záznamu