Rydberg-mediated microwave-to-optical transduction with tunable bandwidth

Abstract:Coherent microwave-to-optical transduction is essential for hybrid quantum networks. Typical transducers, however, have bandwidths set by fixed device parameters and face efficiency-bandwidth tradeoffs. We propose a cavity-based microwave-to-optical transducer mediated by a collective Rydberg excitation, where external driving fields tune the conversion bandwidth in situ from narrowband, spectrally selective operation to broadband operation without modifying cavity parameters. Under impedance-matching conditions, the system operates as a continuous-wave phase-preserving linear transducer, maintaining both near-unit efficiency and quantum-limited added noise throughout the tunable bandwidth range.

Quantum Physics (quant-ph); Atomic Physics (physics.atom-ph)

arXiv:2610.03965 [quant-ph]

(or arXiv:2610.03965v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2610.03965 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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