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

• URL: http://arxiv.org/abs/2505.10638v1
• Date: Thu, 15 May 2025 18:18:40 GMT
• Title: Fiber-coupled broadband quantum memory for polarization-encoded photonic qubits
• Authors: Sandra Cheng, Carson Evans, Todd Pittman,
• Abstract summary: Near-term quantum networking applications will benefit from low-loss, fiber-coupled photonic quantum memory devices with high efficiencies.<n>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 0.5(N+1) where N is the number of storage cycles.
• Score: 0.34089646689382486
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 ~0.5^(N+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 nanoseconds and ~0.5 microseconds, and demonstrate high-fidelity storage and retrieval of ultra-broadband single-photon polarization qubits in both cases.

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