Optical quantum memory with optically inaccessible noble-gas spins

TitleOptical quantum memory with optically inaccessible noble-gas spins
Publication TypeJournal Article
Year of Publication2020
AuthorsKatz, O, Reches, E, Shaham, R, Gorshkov, AV, Firstenberg, O
Date Published7/17/2020

Optical quantum memories, which store and preserve the quantum state of photons, rely on a coherent mapping of the photonic state onto matter states that are optically accessible. Here we outline a new physical mechanism to map the state of photons onto the long-lived but optically inaccessible collective state of noble-gas spins. The mapping employs the coherent spin-exchange interaction arising from random collisions with alkali vapor. We analyze optimal strategies for high-efficiency storage and retrieval of non-classical light at various parameter regimes. Based on these strategies, we identify feasible experimental conditions for realizing efficient quantum memories with noble-gas spins having hours-long coherence times at room temperature and above