All-optical ultrawide-bandwidth quantum buffer

Nathan T. Arnold; Michelle Victora; Michael E. Goggin; Paul G. Kwiat

doi:10.1117/12.2600820

11 July 2021 All-optical ultrawide-bandwidth quantum buffer

Nathan T. Arnold, Michelle Victora, Michael E. Goggin, Paul G. Kwiat

Proceedings Volume 11844, Photonics for Quantum 2021; 118440Y (2021) https://doi.org/10.1117/12.2600820
Event: Photonics for Quantum, 2021, Online Only

Conference Poster

Abstract

Quantum optical memories are a key component in a variety of quantum information applications, from extending quantum communication channels to building high-efficiency single-photon sources to enabling protocols requiring multiple synchronized qubits. However, most current photon storage systems utilize light-matter interactions and are therefore not broadband; meanwhile the available broader-bandwidth photon storage systems operate with somewhat shorter storage times or require cryogenic operation. Here we develop a system with multiplexed free-space storage cavities, able to store single photons with high efficiency over variable delays, up to 12.5 µs, and over multiple nanometers bandwidth at room temperature. The system can store multiple qubits encoded in various degrees of freedom (e.g., time-bin, and polarization) simultaneously. The work presented here has demonstrated storage of polarization states for 1.25 µs and retrieval through single-mode fiber with a state fidelity >99% and efficiency 82%.

Conference Presentation

Citation Download Citation

Nathan T. Arnold, Michelle Victora, Michael E. Goggin, and Paul G. Kwiat "All-optical ultrawide-bandwidth quantum buffer", Proc. SPIE 11844, Photonics for Quantum 2021, 118440Y (11 July 2021); https://doi.org/10.1117/12.2600820

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