TY - JOUR T1 - Optical quantum memory with optically inaccessible noble-gas spins Y1 - 2020 A1 - Or Katz A1 - Eran Reches A1 - Roy Shaham A1 - Alexey V. Gorshkov A1 - Ofer Firstenberg AB -

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

UR - https://arxiv.org/abs/2007.08770 ER - TY - JOUR T1 - Fractional Quantum Hall States of Rydberg Polaritons JF - Physical Review A Y1 - 2015 A1 - Mohammad F. Maghrebi A1 - Norman Y. Yao A1 - Mohammad Hafezi A1 - Thomas Pohl A1 - Ofer Firstenberg A1 - Alexey V. Gorshkov AB - We propose a scheme for realizing fractional quantum Hall states of light. In our scheme, photons of two polarizations are coupled to different atomic Rydberg states to form two flavors of Rydberg polaritons that behave as an effective spin. An array of optical cavity modes overlapping with the atomic cloud enables the realization of an effective spin-1/2 lattice. We show that the dipolar interaction between such polaritons, inherited from the Rydberg states, can be exploited to create a flat, topological band for a single spin-flip excitation. At half filling, this gives rise to a photonic (or polaritonic) fractional Chern insulator -- a lattice-based, fractional quantum Hall state of light. VL - 91 U4 - 033838 UR - http://arxiv.org/abs/1411.6624v1 CP - 3 J1 - Phys. Rev. A U5 - 10.1103/PhysRevA.91.033838 ER - TY - JOUR T1 - Attractive Photons in a Quantum Nonlinear Medium JF - Nature (London) Y1 - 2013 A1 - Ofer Firstenberg A1 - Thibault Peyronel A1 - Qi-Yu Liang A1 - Alexey V. Gorshkov A1 - Mikhail D. Lukin A1 - Vladan Vuletic VL - 502 U4 - 71 UR - http://dx.doi.org/10.1038/nature12512 ER -