TY  - JOUR
AU  - Semenov, A.
AU  - Goltsman, G.
AU  - Korneev, A.
PY  - 2001
DA  - 2001//
TI  - Quantum detection by current carrying superconducting film
T2  - Phys. C: Supercond.
JO  - Phys. C: Supercond.
SP  - 349
EP  - 356
VL  - 351
IS  - 4
KW  - quantum detection
KW  - phase slip centers
KW  - quasiparticle diffusion
AB  - We describe a novel quantum detection mechanism in the superconducting film carrying supercurrent. The mechanism incorporates growing normal domain and breaking of superconductivity by the bias current. A single photon absorbed in the film creates transient normal spot that causes redistribution of the current and, consequently, increase of the current density in superconducting areas. When the current density exceeds the critical value, the film switches into resistive state and generates the voltage pulse. Analysis shows that a submicron-wide film of conventional low temperature superconductor operated in liquid helium may detect single far-infrared photon. The amplitude and duration of the voltage pulse are in the millivolt and picosecond range, respectively. The quantitative model is presented that allows simulation of the detector utilizing this detection mechanism.
SN  - 0921-4534
UR  - http://linkinghub.elsevier.com/retrieve/pii/S0921453400016373
UR  - https://doi.org/10.1016/S0921-4534(00)01637-3
DO  - 10.1016/S0921-4534(00)01637-3
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=507), last updated on Mon, 24 May 2021 13:57:36 -0500
ID  - Semenov_etal2001
ER  -