Monte-Carlo-Markov-Chain Detector Tomography of Nanobridge SNSPDs with 56% quantum efficiency

Conference Paper (2025)
Author(s)

Frederik B. Baalbergen (Universiteit Leiden)

Iman Esmaeil Zahed (TU Delft - ImPhys/Esmaeil Zadeh group)

M. P. van Exter (Universiteit Leiden)

M. J.A. de Dood (Universiteit Leiden)

Research Group
ImPhys/Esmaeil Zadeh group
DOI related publication
https://doi.org/10.1109/CLEO/EUROPE-EQEC65582.2025.11110772
More Info
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Publication Year
2025
Language
English
Research Group
ImPhys/Esmaeil Zadeh group
ISBN (electronic)
9798331512521
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Abstract

Superconducting Nanowire Single Photon Detectors (SNSPDs) are a leading technology for quantum optics and information, offering fast recovery, low timing jitter, high detection efficiency, and intrinsic photon number resolution, making them ideal for future quantum applications [1]. We introduce a Monte-Carlo-Markov-Chain (MCMC) approach to Detector Tomography for nanobridge NbTiN devices, separating internal and external quantum efficiencies. This is key to understanding SNSPD detection mechanisms and performance trade-offs.

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