Fiber-coupled broadband quantum memory for polarization-encoded photonic qubits

Files

2505.10638v1.pdf (2.21 MB)

Links to Files

http://arxiv.org/abs/2505.10638

Permanent Link

https://doi.org/10.48550/arXiv.2505.10638
 http://hdl.handle.net/11603/38904

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UMBC Faculty Collection
UMBC Physics Department
UMBC Student Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0001-8712-3051

Date

2025-05-15

Type of Work

journal articles
preprints
Text

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Citation of Original Publication

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This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author

Subjects

UMBC Quantum Information Group
UMBC Cybersecurity Institute
Quantum Physics

Abstract

Various near-term quantum networking applications will benefit from low-loss, fiber-coupled photonic quantum memory devices with high efficiencies. We demonstrate a fiber-coupled loop-and switch quantum memory platform with a pass-through efficiency of ∼54% and an overall storage efficiency that scales as ∼0.5ᴺ⁺¹ where N is the number of storage cycles. We highlight the trade-off between memory lifetime and qubit accessibility in this platform by using two different storage cycle times of ∼40 ns and ∼0.5 µs, and demonstrate high fidelity storage and retrieval of ultra-broadband single-photon polarization qubits in both cases.