Abstract:
Superconducting nanowire single-photon detectors (SNSPDs) with very high efficiencies (80-90+%) near 1550nm have been recently used for many record-setting experiments in quantum optics, and high data-rate long-range optical communications. Much of the improvement in efficiency is due to the use of tungsten-silicide (WSi) as the superconducting material, which exhibits a higher device yield when fabricated in multi-layer stacks than traditional NbN or NbTiN-based detectors. In this talk, I will introduce SNSPDs and will describe the latest development of these devices at Photon Spot. The talk will also describe the closed-cycle cryogenic system that is used to cool down and operate these detectors.
Bio:
Dr. Anant received his Ph.D. in Electrical Engineering from the
Massachusetts Institute of Technology. He founded Photon Spot, Inc. in
2009 to commercialize high-efficiency SNSPDs and provide easy-to-use
cryogenics technology to the quantum optics community. Photon Spot is
located in the greater Los Angeles area, near Caltech and the Jet
Propulsion Laboratory.
(PLEASE NOTE NON-STANDARD DATE)