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Photon number-resolving detectors (PNRDs) are the ultimate optical sensors. Superconducting-nanostrip photon detectors (SNSPDs), traditionally known as ON-OFF detectors, have recently been found to have photon number resolving capability…

Superconducting nanostrip single-photon detectors (SNSPD) are wide-spread tools in photonic quantum technologies. Here, we study afterpulsing in commercial SNSPD made of amorphous superconducting material. We find that the probability of an…

Optics · Physics 2023-08-21 Sebastian M. F. Raupach , Mariia Sidorova , Alexej D. Semenov

Superconducting nanowire single-photon detectors (SNSPDs) have been widely used to study the discrete nature of quantum states of light in the form of photon-counting experiments. We show that SNSPDs can also be used to study continuous…

Quantum Physics · Physics 2024-11-12 Maximilian Protte , Timon Schapeler , Jan Sperling , Tim J. Bartley

Superconducting detectors are now well-established tools for low-light optics, and in particular quantum optics, boasting high-efficiency, fast response and low noise. Similarly, lithium niobate is an important platform for integrated…

Heralded single-photon sources (HSPS) intrinsically suffer from multiphoton emission, leading to a trade-off between the source's quality and the heralding rate. A solution to this problem is to use photon-number-resolving (PNR) detectors…

Quantum Physics · Physics 2023-10-31 Lorenzo Stasi , Patrik Caspar , Tiff Brydges , Hugo Zbinden , Félix Bussières , Rob Thew

Multiphoton contributions pose a significant challenge for the realisation of heralded single-photon sources (HSPS) based on nonlinear processes. In this work, we improve the quality of single photons generated in this way by harnessing the…

Quantum Physics · Physics 2022-01-26 S. Sempere-Llagostera , G. S. Thekkadath , R. B. Patel , W. S. Kolthammer , I. A. Walmsley

Superconducting nanowire single photon detectors (SNSPDs) are typically used as single-mode-fiber-coupled single-pixel detectors, but large area detectors are increasingly critical for applications ranging from microscopy to free-space…

Instrumentation and Detectors · Physics 2021-02-26 Claire E. Marvinney , Brian E. Lerner , Alexander A. Puretzky , Aaron J. Miller , Benjamin J. Lawrie

Practical superconducting nanowire single photon detectors (SNSPDs) demonstrate a strong trade-off between detection sensitivity and the reset time. Often, there are wide variations in sensitivity and response times from SNSPDs of the same…

Superconductivity · Physics 2024-11-11 Souvik Haldar , Yash Sharma , Krishna B. Balasubramanian

A new neutron detection concept is presented that is based on superconductive niobium (Nb) strips coated by a boron (B) layer. The working principle of the detector relies on the nuclear reaction 10B+n $\rightarrow$ $\alpha$+ 7Li , with…

Instrumentation and Detectors · Physics 2015-06-23 V. Merlo , M. Salvato , M. Cirillo , M. Lucci , I. Ottaviani , A. Scherillo , G. Celentano , A. Pietropaolo

The analysis of proteins in the gas phase benefits from detectors that exhibit high efficiency and precise spatial resolution. Although modern secondary electron multipliers already address numerous analytical requirements, new methods are…

We demonstrate experimentally that single photon detection can be achieved in micron-wide NbN bridges, with widths ranging from 0.53 $\mu$m to 5.15 $\mu$m and for photon-wavelengths from 408 nm to 1550 nm. The microbridges are biased with a…

Superconducting nanowire single-photon detectors (SNSPD), owing to their unique performance, are currently the standard detector in most demanding single-photon experiments. One important metric for any single-photon detector is the…

Instrumentation and Detectors · Physics 2025-10-22 Hui Wang , Nikita Dmitrievic Orlov , Niels Noordzij , Thomas Descamps , J. W. Niels Los , Val Zwiller , Iman Esmaeil Zadeh

We present a 1024-element imaging array of superconducting nanowire single photon detectors (SNSPDs) using a 32x32 row-column multiplexing architecture. Large arrays are desirable for applications such as imaging, spectroscopy, or particle…

Instrumentation and Detectors · Physics 2020-01-08 Emma E. Wollman , Varun B. Verma , Adriana E. Lita , William H. Farr , Matthew D. Shaw , Richard P. Mirin , Sae Woo Nam

The concept of the radio-frequency superconducting nanowire single-photon detector (RF-SNSPD) allows frequency-division multiplexing (FDM) of the bias and readout lines of several SNSPDs. Using this method, a multi-pixel array can be…

Instrumentation and Detectors · Physics 2020-04-22 Steffen Doerner , Artem Kuzmin , Stefan Wuensch , Ilya Charaev , Michael Siegel

The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current-voltage characteristics of the plasma was performed to optimize the…

The sensitive element of superconducting single-photon detectors made in the form of a microstrip promise to resolve significant limitations caused by their typical design. However, attention should be paid to the problem of deterioration…

Instrumentation and Detectors · Physics 2023-04-26 Philipp Zolotov , Sergey Svyatodukh , Alexander Divochiy , Vitaliy Seleznev , Gregory Goltsman

Superconducting nanowire single-photon detectors (SNSPDs) were integrated with plasmonic nanostructures to enhance the absorption efficiency of superconducting BSCCO stripes. A numerical investigation of optimized nanocavity array (NCAI)…

Photon-number resolving (PNR) single-photon detectors are an enabling technology in many areas such as photonic quantum computing, non-classical light source characterisation and quantum imaging. Here, we demonstrate high-efficiency PNR…

This paper presents the development of a superconducting nanowire single-photon detector (SNSPD) integrated into a distributed Bragg reflector (DBR) with a design center wavelength of 830 nm and a width of 200 nm. This SNSPD is made of a…

While magnetic fields and superconductors are both central to classical and quantum technologies, their combined use is often challenging, as magnetic fields significantly affect superconducting device performance. In superconducting…

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