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Proceedings Paper

Fast polarization QKD scheme based on LiNbO3 phase modulators
Author(s): A. Duplinskiy; V. Ustimchik; A. Kanapin; Y. Kurochkin
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Paper Abstract

An optical scheme for polarization encoding BB84 protocol is described. Fiber electro-optical LiNbO3 phase modulators based on Pockels cells provide both polarization states generation for Alice and basis choosing for Bob at high frequency, requiring low operation voltages (Vπ < 5V). Proposed scheme uses only one laser source, which guarantee the indistinguishability of the pulses and active basis choosing allows the system to have two single photon detectors in contrast to the four in the standard polarization encoding schemes. Two phase modulators compensate each others’ polarization mode dispersion, caused by the natural birefringence of the lithium niobate crystal. The system consists of standard components and has simple configuration. The principle of operation is experimentally demonstrated.

Paper Details

Date Published: 30 December 2016
PDF: 7 pages
Proc. SPIE 10224, International Conference on Micro- and Nano-Electronics 2016, 102242W (30 December 2016); doi: 10.1117/12.2266517
Show Author Affiliations
A. Duplinskiy, Russian Quantum Ctr. (Russian Federation)
Moscow Institute of Physics and Technology (Russian Federation)
V. Ustimchik, Russian Quantum Ctr. (Russian Federation)
Moscow Institute of Physics and Technology (Russian Federation)
A. Kanapin, Russian Quantum Ctr. (Russian Federation)
Lomonosov Moscow State Univ. (Russian Federation)
Y. Kurochkin, Russian Quantum Ctr. (Russian Federation)


Published in SPIE Proceedings Vol. 10224:
International Conference on Micro- and Nano-Electronics 2016
Vladimir F. Lukichev; Konstantin V. Rudenko, Editor(s)

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