Berlin 2024 – wissenschaftliches Programm
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SYQC: Symposium Quantum Communication: Promises or Reality?
SYQC 1: Quantum Communication: Promises or Reality?
SYQC 1.2: Hauptvortrag
Freitag, 22. März 2024, 10:00–10:30, H 0105
Superconducting Single Photon Detectors - Limited only by the laws of physics — Andreas Fognini1 and •Val Zwiller1,2 — 1Single Quantum, Rotterdamseweg 394, 2629 HH Delft, The Netherlands — 2KTH Royal Institute of Technology, Department of Applied Physics, Roslagstullbacken 21, 106 91 Stockholm, Sweden
In recent years, the demand for ultrasensitive, high-performance single-photon detectors in the telecom range has led to significant advancements in superconducting nanowire single-photon detectors (SNSPDs). These detectors operate at about 2.5 Kelvin and detect a single-photon by a quantum phase change from the superconducting- to a resistive state. The benefits of SNSPDs are the ability to detect single-photons at the 1550 nm telecom wavelength and beyond with extremely low dark-counts in the Hz regime, while providing very low jitter on the order of 15 ps.
The landscape for SNSPDs is changing rapidly: Ten years ago, SNSPDs were only used in academic research; now, SNSPDs are becoming more widely adopted and are finding more industrial applications. Especially the large funding provided for QKD is accelerating the industrialization and bringing the technology slowly into data-centers.
From this rapid development also other SNSPD applications are profiting through the involved standardizations and enhanced market acceptance like bio-imaging, material science, and even deep-space communication.
In this talk, I want to showcase the rapid developments in SNSPD technology and its applications which have been achieved in the field over the last 10 years.
Keywords: SNSPD; single-photon; detector; Quantum optics