Photon Blockade with Ground-State Neutral Atoms Article Swipe

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Ground state Physics Atomic physics Dipole Excitation Photon Energetic neutral atom Rabi cycle Rabi frequency Oscillation (cell signaling) Quantum Quantum mechanics Ion Laser Chemistry Biochemistry

A. Cidrim , T. S. do Espirito Santo , Johannes Schachenmayer , Robin Kaiser , Romain Bachelard ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1103/physrevlett.125.073601 · OA: W3021602740

We show that induced dipole-dipole interactions allow for photon blockade in subwavelength ensembles of two-level, ground-state neutral atoms. Our protocol relies on the energy shift of the single-excitation, superradiant state of N atoms, which can be engineered to yield an effective two-level system. A coherent pump induces Rabi oscillation between the ground state and a collective bright state, with at most a single excitation shared among all atoms. The possibility of using clock transitions that are long-lived and relatively robust against stray fields, alongside new prospects on experiments with subwavelength lattices, makes our proposal a promising alternative for quantum information protocols.