Unified Theory of Dark Count Rate and System Detection Efficiency for NbN, WSi Based Superconducting Single Photon Detectors

• URL: http://arxiv.org/abs/2508.10816v1
• Date: Thu, 14 Aug 2025 16:42:30 GMT
• Title: Unified Theory of Dark Count Rate and System Detection Efficiency for NbN, WSi Based Superconducting Single Photon Detectors
• Authors: Daien He, Leif Bauer, Sathwik Bharadwaj, Zubin Jacob,
• Abstract summary: We present a vortex crossing theory of photon detection which provides a unified definition of system detection efficiency and dark count rates.<n>Our approach quantitatively captures the plateau region of system detection efficiency for NbN and WSi based SNSPDs.<n>We concurrently predict the temperature dependence of dark count rates and the intrinsic timing jitter of SNSPDs.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Predicting the behavior of superconducting nanowire single photon detectors (SNSPDs) is important as their use becomes more widespread in fields ranging from quantum computing to quantum remote sensing. Here, we present a vortex crossing theory of photon detection which provides a unified definition of system detection efficiency and dark count rates. Our approach quantitatively captures the plateau region of system detection efficiency for NbN and WSi based SNSPDs. We concurrently predict the temperature dependence of dark count rates and the intrinsic timing jitter of SNSPDs. We extensively benchmark our model against various experiments to aid in the design of the next generation of SNSPDs.

Related papers

• Machine learning inspired photon number resolution in superconducting nanowire single-photon detectors [0.0]
  Photon-number resolved detection with superconducting nanowire single-photon detectors (SNSPDs) attracts increasing interest.<n>We combine principal component analysis (PCA) with a new readout technique to explore the photon-number resolving capabilities of SNSPDs.<n>We introduce a new confidence metric based on the Bhattacharyya to quantify the photon-number-resolving capabilities of a detector system.
  arXiv  Detail & Related papers  (2025-11-17T15:13:46Z)
• Jitter in photon-number-resolved detection by superconducting nanowires [0.0]
  We analyze the physics of multi-photon absorption in superconducting nanowire single-photon detectors (SNSPDs)<n>Our model provides an excellent description of the arrival-time histogram of a commercial SNSPD across several orders of magnitude.<n>Our findings have important implications for photon-number-resolving detector design, as well as applications requiring low jitter.
  arXiv  Detail & Related papers  (2025-03-21T13:50:47Z)
• Noise Mitigation in Single Microwave Photon Counting by Cascaded Quantum Measurements [32.73124984242397]
  Single microwave photon detectors (SMPDs) have only recently been demonstrated.<n>These detectors offer a substantial advantage over quantum-limited amplification schemes.<n>We report an intrinsic sensitivity of $8(1)times10-24textW/sqrttextHz$, with an operational sensitivity of $5.9(6)times 10-23textW/sqrttextHz$ limited by thermal photons in the input line.
  arXiv  Detail & Related papers  (2025-02-20T18:26:48Z)
• A New Bite Into Dark Matter with the SNSPD-Based QROCODILE Experiment [55.46105000075592]
  We present the first results from the Quantum Resolution-d Cryogenic Observatory for Dark matter Incident at Low Energy (QROCODILE)<n>The QROCODILE experiment uses a microwire-based superconducting nanowire single-photon detector (SNSPD) as a target and sensor for dark matter scattering and absorption.<n>We report new world-leading constraints on the interactions of sub-MeV dark matter particles with masses as low as 30 keV.
  arXiv  Detail & Related papers  (2024-12-20T19:00:00Z)
• Impact of polarization mode dispersion on entangled photon distribution [34.82692226532414]
  Polarization mode dispersion (PMD) in optical fibers poses a major challenge for maintaining the fidelity of quantum states for quantum communications.<n>Our research proposes effective methods to mitigate PMD effects for broadband entangled photons and evaluates the impact of higher-order PMD effects.
  arXiv  Detail & Related papers  (2024-08-03T11:29:45Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• GHz detection rates and dynamic photon-number resolution with superconducting nanowire arrays [0.0]
  Superconducting-nanowire single-photon detectors (SNSPDs) have enabled the realization of several quantum optics technologies. We report the fabrication of an SNSPD array composed of 14 independent pixels, achieving a system detection efficiency (SDE) of 90% in the telecom band. We show 2-photon and 3-photon fidelities of 74% and 57% respectively, which represent state-of-the-art results for fiber-coupled SNSPDs.
  arXiv  Detail & Related papers  (2023-03-30T14:16:59Z)
• Optimal Amplitude Multiplexing of a Series of Superconducting Nanowire Single Photon Detectors [58.720142291102135]
  Integrated arrays of Superconducting Nanowire Single Photon Detectors (SNSPDs) have shown capabilities such as Photon Number Resolution, single photon imaging and coincidences detection. The growing complexity of such applications requires the use of multiplexing schemes for the simultaneous readout of different detectors. A simple multiplexing scheme can be realized by arranging a series of SNSPDs elements, shunted by appropriate resistances.
  arXiv  Detail & Related papers  (2023-03-14T15:57:17Z)
• High-efficiency and fast photon-number resolving parallel superconducting nanowire single-photon detector [0.0]
  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 detectors using a parallel superconducting nanowire single-photon detector (P-SNSPD) architecture that does not suffer from crosstalk between the pixels and that is free of latching.
  arXiv  Detail & Related papers  (2022-07-29T08:15:46Z)
• Superconducting Nanowire Single-Photon Detectors for Quantum Information [0.0]
  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. SNSPDs have been extensively applied in quantum information processing, including quantum key distribution and optical quantum computation.
  arXiv  Detail & Related papers  (2020-05-31T02:05:16Z)
• Position Sensitive Response of a Single-Pixel Large-Area SNSPD [58.720142291102135]
  Superconducting nanowire single photon detectors (SNSPDs) are typically used as single-mode-fiber-coupled single-pixel detectors. Large area detectors are increasingly critical for applications ranging from microscopy to free-space quantum communications. We explore changes in the rising edge of the readout pulse for large-area SNSPDs as a function of the bias current, optical spot size on the detector, and number of photons per pulse.
  arXiv  Detail & Related papers  (2020-05-29T23:33:11Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.