Capacitive readout and gating of superconducting single photon detectors

被引：2
|
作者：
Azzouz, Hatim [1 ,2 ]
Heeres, Reinier W. [2 ]
Dorenbos, Sander N. [2 ]
Schouten, Raymond N. [2 ]
Zwiller, Valery [2 ]
机构：
[1] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden
[2] Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 05期
关键词：
QUANTUM INFORMATION; MULTIPLEXER; TIME; ARRAYS;
D O I：
10.1063/1.4805055
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We propose and develop a readout scheme for superconducting single-photon detectors based on an integrated circuit, relaxing the need for large bandwidth amplification and resulting in voltage steps proportional to the number of detected photons. We also demonstrate time gating, to filter scattered light in time and reduce dark counts. This could lead to a higher signal-to-noise ratio. The gate pulse is generated on the detection of a photon created by a spontaneous parametric down-conversion source, heralding the presence of a second photon. These two schemes could find applications within advanced multi-array imaging detection systems. (C) 2013 AIP Publishing LLC.
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页数：4
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