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Response time characterization of NbN superconducting single-photon detectors

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9 Author(s)
Jin Zhang ; Mater. Sci. Program, Univ. of Rochester, NY, USA ; Slysz, W. ; Verevkin, A. ; Okunev, O.
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We report our time-resolved measurements of NbN-based superconducting single-photon detectors. The structures are meander-type, 10-nm thick, and 200-nm wide stripes and were operated at 4.2 K. We have shown that the NbN devices can count single-photon pulses with below 100-ps time resolution. The response signal pulse width was about 150 ps, and the system jitter was measured to be 35 ps.

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Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 2 )