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13 March 2024 Precision synchronization over large Doppler ranges for satellite-based free-space quantum networking
Neal W. Spellmeyer, Catherine Lee, Marvin Scheinbart, Scott A. Hamilton
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Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC1291109 (2024) https://doi.org/10.1117/12.3000342
Event: SPIE Quantum West, 2024, San Francisco, California, United States
Abstract
Precision synchronization is vital for long-distance quantum networking in which entanglement swapping between separate sources via an optical Bell state measurement requires temporal overlap of arriving photonic qubits. This challenge is particularly distinct in satellite-based entanglement distribution in which relative motion, channel effects, and propagation delay must be addressed. This work presents recent progress in achieving precision synchronization in a quantum networking testbed configured for a dual-uplink architecture in which photons from sources at two ground locations would interact at Bell-state measurement on a satellite. Results demonstrate sub-ps synchronization in cases of large Doppler arising from satellite motion.
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Neal W. Spellmeyer, Catherine Lee, Marvin Scheinbart, and Scott A. Hamilton "Precision synchronization over large Doppler ranges for satellite-based free-space quantum networking", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC1291109 (13 March 2024); https://doi.org/10.1117/12.3000342
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KEYWORDS
Quantum entanglement
Doppler effect
Satellites
Quantum networks
Free space optics
Photons
Quantum channels
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