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Significance: Superconducting nanowire single-photon detectors (SNSPDs; also known as SSPDs) show enormous promise for low-light biomedical imaging by offering exceptional sensitivity, picosecond timing resolution, and broad spectral…

Optics · Physics 2025-12-09 Emi Cora Valmai Hughes , Avinash Upadhya , Kishan Dholakia

The superconducting nanowire single-photon detector (SNSPD) is a quantum-limit superconducting optical detector based on the Cooper-pair breaking effect by a single photon, which exhibits a higher detection efficiency, lower dark count…

Instrumentation and Detectors · Physics 2020-06-02 Lixing You

Single-photon detectors and nanoscale superconducting devices are two major candidates for realizing quantum technologies. Superconducting-nanowire single-photon detectors (SNSPDs) comprise these two solid-state and optic aspects enabling…

Instrumentation and Detectors · Physics 2019-01-24 Itamar Holzman , Yachin Ivry

Superconducting nanowire single-photon detectors (SNSPDs) perform single-photon counting with exceptional sensitivity and time resolution at near-infrared wavelengths. State-of-the-art SNSPDs, based on 100 nm-wide, 4 to 5 nm thick NbN…

Quantum Physics · Physics 2015-05-20 F. Marsili , F. Najafi , E. Dauler , F. Bellei , X. Hu , M. C. Csete , R. Molnar , K. K. Berggren

For photon-counting applications at ultraviolet wavelengths, there are currently no detectors that combine high efficiency (> 50%), sub-nanosecond timing resolution, and sub-Hz dark count rates. Superconducting nanowire single-photon…

Superconducting nanowire single-photon detectors (SNSPDs) have emerged as essential devices that push the boundaries of photon detection with unprecedented sensitivity, ultrahigh timing precision, and broad spectral response. Recent…

Quantum Physics · Physics 2025-06-02 Jun Gao , Jin Chang , Bruno Lopez Rodriguez , Iman Esmaeil Zadeh , Val Zwiller , Ali W. Elshaari

A large-format mid-infrared single-photon imager with very low dark count rates would enable a broad range of applications in fields like astronomy and chemistry. Superconducting nanowire single-photon detectors (SNSPDs) are a mature…

Quantum Physics · Physics 2024-04-05 Benedikt Hampel , Richard P. Mirin , Sae Woo Nam , Varun B. Verma

Superconducting nanowire single photon detectors (SNSPDs) offer high-quantum-efficiency and low-dark-count-rate single photon detection. In a growing number of cases, large magnetic fields are being incorporated into quantum microscopes,…

Superconducting nanowire single photon detectors (SNSPD or SSPD) are highly promising devices in the growing field of quantum information and communications technology. We have developed a practical SSPD system with our superconducting thin…

Quantum Physics · Physics 2016-11-17 Zhen Wang , Shigehito Miki , Mikio Fujiwara

Superconducting nanowire single-photon detectors (SNSPDs) are efficient measurement devices used for counting single photons. The field of their applications covers experimental quantum-optical studies, optical quantum computing, quantum…

Quantum Physics · Physics 2022-06-24 V. A. Uzunova , A. A. Semenov

Superconducting nanowire single-photon detector (SNSPD) with near-unity system efficiency is a key enabling, but still elusive technology for numerous quantum fundamental theory verifications and quantum information applications. The key…

Superconductivity · Physics 2020-12-30 Peng Hu , Hao Li , Lixing You , Heqing Wang , You Xiao , Jia Huang , Xiaoyan Yang , Weijun Zhang , Zhen Wang , Xiaoming Xie

Superconducting nanowire single-photon detectors (SNSPDs) are the current leading technology for the detection of single-photons in the near-infrared (NIR) and short-wave infrared (SWIR) spectral regions, due to record performance in terms…

We present a novel design of a superconducting nanowire single photon detector (SNSPD) fabricated on a core of a single mode optical fiber. The proposed design allows high overlap between the fiber light mode and the detector, and…

Superconductivity · Physics 2015-06-12 Gil Bachar , Ilya Baskin , Oleg Shtempluck , Eyal Buks

We report the fabrication of a superconducting nanowire single-photon detector (SSPD or SNSPD) with an ultralow dark count rate. By introducing optical band-pass filters at the input of the SSPD and cooling the filters at 3 K, the dark…

Superconductivity · Physics 2014-08-27 H. Shibata , K. Shimizu , H. Takesue , Y. Tokura

For the last 50 years, superconducting detectors have offered exceptional sensitivity and speed for detecting faint electromagnetic signals in a wide range of applications. These detectors operate at very low temperatures and generate a…

Superconducting Nanowire Single-Photon Detectors (SNSPDs) are key building blocks for photonic quantum technologies due to their ability to detect single photons with ultra-high efficiency, low dark counts and fast temporal resolution.…

Superconducting nanowire single photon detectors (SNSPDs) are fabricated directly on diamond substrates and their optical and electrical properties are characterized. Dark count performance and photon count rates are measured at varying…

Superconducting nanowire single photon detectors (SNSPDs) are the highest-performing technology for time-resolved single-photon counting from the UV to the near-infrared. The recent discovery of single-photon sensitivity in micrometer-scale…

Generally, a superconducting nanowire single-photon detector (SNSPD) is composed of wires with a typical width of ~100 nm. Recent studies have found that superconducting strips with a micrometer-scale width can also detect single photons.…

Instrumentation and Detectors · Physics 2021-04-28 Guang-Zhao Xu , Wei-Jun Zhang , Li-Xing You , Jia-Min Xiong , Xing-Qu Sun , Hao Huang , Xin Ou , Yi-Ming Pan , Chao-Lin Lv , Hao Li , Zhen Wang , Xiao-Ming Xie

Superconducting nanowire single photon detectors (SNSPDs) have advanced various frontier scientific and technological fields such as quantum key distribution and deep space communications. However, limited by available cooling technology,…

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