TY  - CONF
AU  - Shcherbatenko, M.
AU  - Lobanov, Y.
AU  - Semenov, A.
AU  - Kovalyuk, V.
AU  - Korneev, A.
AU  - Ozhegov, R.
AU  - Kaurova, N.
AU  - Voronov, B.
AU  - Goltsman, G.
A2  - Photon counting applications
ED  - Prochazka, I.
ED  - Sobolewski, R.
ED  - James, R. B.
PY  - 2017
DA  - 2017//
TI  - Coherent detection of weak signals with superconducting nanowire single photon detector at the telecommunication wavelength
T2  - Proc. SPIE
BT  - Proc. SPIE
SP  - 0G (1 to 12)
VL  - 10229
PB  - Spie
KW  - SSPD mixer
KW  - SNSPD
KW  - coherent detection
KW  - weak signal detection
KW  - superconducting nanostructures
AB  - Achievement of the ultimate sensitivity along with a high spectral resolution is one of the frequently addressed problems, as the complication of the applied and fundamental scientific tasks being explored is growing up gradually. In our work, we have investigated performance of a superconducting nanowire photon-counting detector operating in the coherent mode for detection of weak signals at the telecommunication wavelength. Quantum-noise limited sensitivity of the detector was ensured by the nature of the photon-counting detection and restricted by the quantum efficiency of the detector only. Spectral resolution given by the heterodyne technique and was defined by the linewidth and stability of the Local Oscillator (LO). Response bandwidth was found to coincide with the detector’s pulse width, which, in turn, could be controlled by the nanowire length. In addition, the system noise bandwidth was shown to be governed by the electronics/lab equipment, and the detector noise bandwidth is predicted to depend on its jitter. As have been demonstrated, a very small amount of the LO power (of the order of a few picowatts down to hundreds of femtowatts) was required for sufficient detection of the test signal, and eventual optimization could lead to further reduction of the LO power required, which would perfectly suit for the foreseen development of receiver matrices and the need for detection of ultra-low signals at a level of less-than-one-photon per second.
UR  - https://doi.org/10.1117/12.2267724
DO  - 10.1117/12.2267724
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1201), last updated on Mon, 10 May 2021 21:57:34 -0500
ID  - Shcherbatenko_etal2017
ER  -