Superconducting detectors for next-generation quantum networking

Martin J. Stevens; Michael D. Mazurek; Gautam A. Kavuri; Michael B. Grayson; Markus Allgaier; Lynden K. Shalm

doi:10.1117/12.3009356

13 March 2024 Superconducting detectors for next-generation quantum networking

Martin J. Stevens, Michael D. Mazurek, Gautam A. Kavuri, Michael B. Grayson, Markus Allgaier, Lynden K. Shalm

Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC1291102 (2024) https://doi.org/10.1117/12.3009356
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Superconducting Nanowire-Single Photon Detectors (SNSPDs) have emerged as the highest-performing single-photon detectors, with detection efficiencies reaching 98%, maximum count rates over 1 Gcount/s, and the ability to distinguish between single-photon and multi-photon events. SNSPDs have enabled our group to demonstrate loophole-free tests of Bell’s inequality and device-independent randomness expansion. In this talk I will discuss a new scheme using SNSPDs for high-rate, high-fidelity entanglement distribution between remote nodes of a quantum network. The scheme uses a high-quality heralded entangled source and all-optical quantum repeaters. I will discuss requirements for the SNSPDs and strategies for achieving interferometric stability across the network. Both will be crucial for achieving high-fidelity entanglement distribution at high rates.

Conference Presentation

Citation Download Citation

Martin J. Stevens, Michael D. Mazurek, Gautam A. Kavuri, Michael B. Grayson, Markus Allgaier, and Lynden K. Shalm "Superconducting detectors for next-generation quantum networking", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC1291102 (13 March 2024); https://doi.org/10.1117/12.3009356

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