Presentation
13 March 2024 Quantum precise bias supply of superconducting single photon detectors
Author Affiliations +
Abstract
We propose a new biasing concept for superconducting nanowire single photon detectors (SNSPD). It features the frequency-voltage relation of a Josephson junction to generate a bias supply with quantum precision. The quantum bias concept is characterized by a very low resistor and a frequency controlled noise-free quantum voltage source. In the first experiments, we intentionally slow down the time constant by using a very small bias resistor. We obtain an intrinsic time constant of about 100μs. Corresponding to this time constant, the generated current pulses for the Josephson junction through the SNSPD cause in time-average a constant bias current. The SNSPD as well as the Josephson junction are based on superconducting thin film technology and can be fabricated in general on the same substrate.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas Ortlepp, Sonja Engert, Christian Moeller, and Anna Reinhardt "Quantum precise bias supply of superconducting single photon detectors", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC1291105 (13 March 2024); https://doi.org/10.1117/12.3003646
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KEYWORDS
Single photon detectors

Resistors

Inductance

Superconductors

Nanowires

Quantum experiments

Quantum frequencies

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