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We investigate the performance of superconducting nanowire photon detectors fabricated from ultra-thin Nb. A direct comparison is made between these detectors and similar nanowire detectors fabricated from NbN. We find that Nb detectors are…

Superconducting nanowire single-photon detectors (SNSPDs) are the highest performing photon-counting technology in the near-infrared (NIR). Due to delay-line effects, large area SNSPDs typically trade-off timing resolution and detection…

Single photonic applications - such as quantum key distribution - rely on the transmission of single photons, and require the ultimate sensitivity that an optical detector can achieve. Single-photon detectors must convert the energy of an…

Instrumentation and Detectors · Physics 2009-11-13 C. Zinoni , B. Alloing , L. H. Li , F. Marsili , L. Lunghi , A. Gerardino , Yu. B. Vakhtomin , K. V. Smirnov , G. N. Gol'tsman , A. Fiore

Latching is a serious issue in superconducting nanowire single-photon detector (SNSPD) technology. By extensively studying the electrical transportation characteristics of SNSPD with different bias schemes, we conclude that latching is a…

Superconducting nanowire single photon detectors are capable of single-photon detection across a large spectral range, with near unity detection efficiency, picosecond timing jitter, and sub-10 $\mu$m position resolution at rates as high as…

Instrumentation and Detectors · Physics 2020-03-18 T. Polakovic , W. R. Armstrong , V. Yefremenko , J. E. Pearson , K. Hafidi , G. Karapetrov , Z. -E. Meziani , V. Novosad

Here, we report on successful operation of a NbN thin film superconducting nanowire single-photon detector (SNSPD) in a coherent mode (as a mixer) at the telecommunication wavelength of 1550 nm. Providing the Local Oscillator power of the…

Superconducting nanowire single-photon detectors (SNSPDs) have attracted remarkable interest for visible and near infrared single-photon detection, owing to their outstanding performance. Conventional SNSPDs are generally used as binary…

Applied Physics · Physics 2020-05-21 X. Q. Sun , W. J. Zhang , C. J. Zhang , L. X. You , G. Z. Xu , J. Huang , H. Li , Z. Wang , X. M. Xie

Nitrogen-doped Tungsten-Rhenium superconducting alloys were recently proposed as a promising material platform for superconducting nanowire single-photon detectors (SNSPDs), offering a favorable balance between high normal state resistivity…

Superconductivity · Physics 2026-05-26 F. Colangelo , Abhishek Kumar , H. Wang , F. Avitabile , C. Attanasio , I. Esmaeil Zadeh , C. Cirillo

We demonstrate and verify quantum detector tomography of a superconducting nanowire single-photon detector (SNSPD) in a multiplexing scheme which permits measurement of up to 71000 photons per input pulse. We reconstruct the positive…

Quantum Physics · Physics 2021-04-20 Timon Schapeler , Jan Philipp Hoepker , Tim J. Bartley

Superconducting nanowire single-photon detectors (SNSPDs) are indispensable in fields such as quantum science and technology, astronomy, and biomedical imaging, where high detection efficiency, low dark count rates and high timing accuracy…

We experimentally investigated the detection performance of highly disordered NbxTi1-xN based superconducting nanowire single photon detectors (SNSPDs). The dependence on the composition of the transition temperature Tc for NbxTi1-xN films…

Superconductivity · Physics 2022-10-28 Ruoyan Ma , Rui Shu , Xingyu Zhang , Aobo Yu , Huang Jia , You Xiao , Huiqin Yu , Xiaoyu Liu , Hao Li , Per Eklund , Xiaofu Zhang , Lixing You

Dark count rate is one of the key parameters limiting the performance of the superconducting nanowire single photon detector (SNSPD). We have designed a multi-layer film bandpass filter that can be integrated onto the SNSPD to suppress the…

Superconductivity · Physics 2014-06-27 Xiaoyan Yang , Hao Li , Weijun Zhang , Lixing You , Lu Zhang , Xiaoyu Liu , Zhen Wang , Wei Peng , Xiaoming Xie , Mianheng Jiang

Superconducting nanowire single-photon detectors are widely used in various fields of physics and technology, due to their high efficiency and timing precision. Although, in principle, their detection mechanism offers broadband operation,…

Superconductivity · Physics 2026-03-25 Martin Baránek , Pavol Neilinger , Samuel Kern , Miroslav Grajcar

In the past decade superconducting nanowire single photon detectors (SNSPDs) have gradually become an indispensable part of any demanding quantum optics experiment. Until now, most SNSPDs are coupled to single-mode fibers. SNSPDs coupled to…

Over the past decade, multi-element superconducting nanowire single-photon detectors (SNSPDs) have emerged as the leading single-photon detection technology due to their exceptional system detection efficiency (SDE), ultrahigh timing…

Optics · Physics 2025-12-22 Amir Targholizadeh , Grigoriy Y. Nikulin , Pankaj K. Jha

We present an alternative approach to the fabrication of highly efficient superconducting nanowire single-photon detectors (SNSPDs) based on tungsten silicide. Using well-established technologies for the deposition of dielectric mirrors and…

Niobium Titanium nitride (NbTiN) based superconducting nanowire single photon detectors (SNSPDs) are known for their high performance across a wide spectral range, from the X-ray to the mid-infrared. Nonetheless, fabrication challenges and…

Quantum Physics · Physics 2026-02-19 C. Klein , S. Cohen , T. Descamps , A. Iovan , P. Zolotov , P. Vennéguès , I. Florea , F. Semond , V. Zwiller

Niobium Nitride (NbN) nanowire is the most popular detection material of superconducting nanowire single photon detectors (SNSPDs) for high repetition rate and high efficiency. However, it has been assumed to be difficult for fabricating…

Applied Physics · Physics 2018-11-27 Qi Chen , Biao Zhang , Labao Zhang , Rui Ge , Ruiying Xu , Yang Wu , Xuecou Tu , Xiaoqing Jia , Lin Kang , Jian Chen , Peiheng Wu

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 consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In…