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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) 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…

Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have rapidly emerged as a highly promising photon-counting technology for infrared wavelengths. These devices offer high efficiency, low dark counts and excellent…

Quantum Physics · Physics 2012-04-26 Chandra M. Natarajan , Michael G. Tanner , Robert H. Hadfield

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

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 (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 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

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) 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 (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…

Superconducting nanowire single photon detectors (SNSPDs) are a leading detector technology for time-resolved single-photon counting from the ultraviolet to the near-infrared regime. The recent advancement in single-photon sensitivity in…

Instrumentation and Detectors · Physics 2025-10-09 Christina Wang , Cristián Peña , Si Xie , Emanuel Knehr , Boris Korzh , Jamie Luskin , Sahil Patel , Matthew Shaw , Valentina Vega

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

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

Satellite-ground quantum communication requires single-photon detectors of 850-nm wavelength with both high detection efficiency and large sensitive area. We developed superconducting nanowire single-photon detectors (SNSPDs) on…

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…

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 fast development of superconducting nanowire single photon detector (SNSPD) in the past decade has enabled many advances in quantum information technology. The best system detection efficiency (SDE) record at 1550 nm wavelength was 93%…

Superconductivity · Physics 2017-10-16 W. J. Zhang , L. X. You , H. Li , J. Huang , C. L. Lv , L. Zhang , X. Y. Liu , J. J. Wu , Z. Wang , X. M. Xie

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

Since their inception, superconducting nanowire single-photon detectors have been enabling quantum optical applications and the rise of the photonic quantum industry. The evolution in the detector design and read-out strategies has led to…

Quantum Physics · Physics 2024-12-19 Lorenzo Stasi , Towsif Taher , Giovanni V. Resta , Hugo Zbinden , Rob Thew , Félix Bussières
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