Monte-Carlo-Markov-Chain Detector Tomography of Nanobridge SNSPDs with 56% quantum efficiency
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)
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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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File under embargo until 15-02-2026