Single-photon synchronization with a room-temperature atomic quantum memory

• DOI: 10.48550/arxiv.2302.09508
• Publication Date: 2023-01-01
• Authors: Omri Davidson; Ohad Yogev; Eilon Poem; Ofer Firstenberg
• Keywords: Quantum Memory

Efficient synchronization of single photons that are compatible with narrowband atomic transitions is an outstanding challenge, which could prove essential for photonic quantum information processing. Here we report on the independently-generated using a room-temperature memory. The photon source and memory interconnected by fibers employ same ladder-level scheme. We store retrieve heralded end-to-end efficiency $η_\text{e2e}=25\%$ final anti-bunching $g^{(2)}_\text{h}=0.023$. Our process results in over tenfold increase photon-pair coincidence rate, reaching rate more than $1000$ detected synchronized pairs per second. indistinguishability verified Hong-Ou-Mandel interference measurement.