Integrated electronics for superconducting-nanowire single-photon detector readout

Karl K. Berggren

doi:10.1117/12.3009634

13 March 2024 Integrated electronics for superconducting-nanowire single-photon detector readout

Karl K. Berggren

Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC1291104 (2024) https://doi.org/10.1117/12.3009634
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Superconducting single-photon detectors are a key technology for quantum information science, being of particular use for quantum key distribution and photonics-based quantum computing. However, the biasing, readout, and signal processing associated with the detector is typically handled by off-chip conventional semiconductor electronics. Increasingly, this solution is proving problematic: such electronics consume large amounts of power and are cumbersome to integrate on the same chip as the detectors. Superconducting classical electronics relying on Josephson junctions are an alternative, but require an integrated fabrication process, which adds complexity to the device. An alternative is to use the superconducting nanowires themselves, in the form of “cryotrons”, an alternative to Josephson junction superconducting switches first proposed in the 1950s, but recently experiencing renewed interest with scaling to the nanometer length scale. These technologies and applications of them to SNSPD readout and signal processing will be discussed.

Conference Presentation

Citation Download Citation

Karl K. Berggren "Integrated electronics for superconducting-nanowire single-photon detector readout", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC1291104 (13 March 2024); https://doi.org/10.1117/12.3009634

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