TY  - JOUR
AU  - Shcherbatenko, M. L.
AU  - Elezov, M. S.
AU  - Goltsman, G. N.
AU  - Sych, D. V.
PY  - 2020
DA  - 2020//
TI  - Sub-shot-noise-limited fiber-optic quantum receiver
T2  - Phys. Rev. A
JO  - Phys. Rev. A
SP  - 032306 (1 to 5)
VL  - 101
IS  - 3
KW  - SSPD mixer
KW  - SNSPD
AB  - We experimentally demonstrate a quantum receiver based on the Kennedy scheme for discrimination between two phase-modulated weak coherent states. The receiver is assembled entirely from standard fiber-optic elements and operates at a conventional telecom wavelength of 1.55 μm. The local oscillator and the signal are transmitted through different optical fibers, and the displaced signal is measured with a high-efficiency superconducting nanowire single-photon detector. We show the discrimination error rate is two times below that of a shot-noise-limited receiver with the same system detection efficiency.
SN  - 2469-9926
UR  - https://link.aps.org/doi/10.1103/PhysRevA.101.032306
UR  - https://doi.org/10.1103/PhysRevA.101.032306
DO  - 10.1103/PhysRevA.101.032306
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1268), last updated on Fri, 07 May 2021 13:54:36 -0500
ID  - Shcherbatenko_etal2020
ER  -