TY  - JOUR
AU  - Zhang, J.
AU  - Słysz, W.
AU  - Pearlman, A.
AU  - Verevkin, A.
AU  - Sobolewski, R.
AU  - Okunev, O.
AU  - Chulkova, G.
AU  - Gol’tsman, G. N.
PY  - 2003
DA  - 2003//
TI  - Time delay of resistive-state formation in superconducting stripes excited by single optical photons
T2  - Phys. Rev. B
JO  - Phys. Rev. B
SP  - 132508 (1 to 4)
VL  - 67
IS  - 13
KW  - NbN SSPD
KW  - SNSPD
AB  - We have observed a 65(±5)-ps time delay in the onset of a resistive-state formation in 10-nm-thick, 130-nm-wide NbN superconducting stripes exposed to single photons. The delay in the photoresponse decreased to zero when the stripe was irradiated by multi-photon (classical) optical pulses. Our NbN structures were kept at 4.2 K, well below the material’s critical temperature, and were illuminated by 100-fs-wide optical pulses. The time-delay phenomenon has been explained within the framework of a model based on photon-induced generation of a hotspot in the superconducting stripe and subsequent, supercurrent-assisted, resistive-state formation across the entire stripe cross section. The measured time delays in both the single-photon and two-photon detection regimes agree well with theoretical predictions of the resistive-state dynamics in one-dimensional superconducting stripes.
SN  - 0163-1829
UR  - https://link.aps.org/doi/10.1103/PhysRevB.67.132508
UR  - https://doi.org/10.1103/PhysRevB.67.132508
DO  - 10.1103/PhysRevB.67.132508
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1519), last updated on Thu, 20 May 2021 19:53:05 -0500
ID  - Zhang_etal2003
ER  -