Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper JSV_1_1

Superconducting single photon detectors

Not Accessible

Your library or personal account may give you access


There is increasing interest in using superconducting optical photon detectors in a variety of applications. These applications require detectors that have extremely low dark count rates, high count rates, and high quantum efficiency. I will describe our work on two types of superconducting detectors, the Superconducting Nanowire Single Photon Detector (SNSPD or nSSPD) and superconducting Transition-Edge Sensor (TES). An SNSPD is an ultra-thin, ultra-narrow (nm scale) superconducting meander that is current biased just below its critical current density. When one or more photon is absorbed, a hot spot is formed that causes the superconductor to develop a resistance and consequently a voltage pulse. At NIST and JPL, we have been developing nanowire detectors using an amorphous alloy of tungsten-silicide. An example of this detector is shown in Fig 1(a). In this case, there are two tungsten silicide layers separated by a dielectric layer to optimize detection of light for any polarization[1]. Fig 1(b) is an example of a TES detector with gold cooling fins to enhance timing of the detector[2]. By exploiting the sharp superconducting-to-normal resistive transition of tungsten at 100mK, TES detectors give an output signal that is proportional to the cumulative energy in an absorption event. This proportional pulse-height enables the determination of the energy absorbed by the TES and the direct conversion of sensor pulse-height into photon number. I will discuss our progress towards developing both types of detectors with quantum efficiencies approaching 100%.

© 2013 IEEE

PDF Article
More Like This
Membrane-integrated superconducting nanowire single-photon detectors

F. Najafi, J. Mower, X. Hu, F. Bellei, P. Kharel, A. Dane, Y. Ivry, L. Cheong, K. Sunter, D. Englund, and K. K. Berggren
QF1A.6 CLEO: QELS_Fundamental Science (CLEO_QELS) 2013

On-fiber assembly of membrane-integrated superconducting-nanowire single-photon detectors

Xiaolong Hu, Faraz Najafi, Jacob Mower, Francesco Bellei, Xiang Mao, Prashanta Kharel, Andrew Dane, Yachin Ivry, Adam McCaughan, Lin Lee Cheong, Karl K. Berggren, and Dirk R. Englund
FW1C.5 Frontiers in Optics (FiO) 2013

Superconducting Nanowire Single Photon Detectors with High System Detection Efficiency at Telecom Wavelengths

F. Marsili, V. B. Verma, J. A. Stern, S. Harrington, A. E. Lita, T. Gerrits, I. Vayshenker, B. Baek, M. D. Shaw, A. J. Miller, R. P. Mirin, and S. W. Nam
JTh2A.103 CLEO: QELS_Fundamental Science (CLEO_QELS) 2013


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription

Select as filters

Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved