Paper • The following article is Open access

Polarization control algorithm for QKD systems

, , , and

Published under licence by IOP Publishing Ltd
, , Citation E E Mekhtiev et al 2021 J. Phys.: Conf. Ser. 2086 012092 DOI 10.1088/1742-6596/2086/1/012092

Download Article PDF

Article metrics

511 Total downloads

Share this article

Author e-mails

e.mehtiev@goqrate.com

Author affiliations

1 QRate, Novaya av. 100, Moscow, Russia

2 Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russian Federation

3 NTI Center for Quantum Communications, National University of Science and Technology MISiS, Leninsky prospekt 4, Moscow 119049, Russia

4 Russian Quantum Center, Bolshoy Boulevard 30, bld. 1, Skolkovo, Moscow 121205, Russia

5 Federal State Budget Educational Institution of Higher Education, MIREA—Russian Technological University, 78, Vernadskogo avenye, 119454 Moscow, Russia

Buy this article in print

Journal RSS
Sign up for new issue notifications
1742-6596/2086/1/012092

Abstract

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.

Export citation and abstract BibTeX RIS

Previous article in issue
Next article in issue

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Please wait… references are loading.
10.1088/1742-6596/2086/1/012092