Enhanced Quantum Interface with Collective Ion-Cavity Coupling

Abstract

We prepare a maximally entangled state of two ions and couple both ions to the mode of an optical cavity. The phase of the entangled state determines the collective interaction of the ions with the cavity mode, that is, whether the emission of a single photon into the cavity is suppressed or enhanced. By adjusting this phase, we tune the ion--cavity system from sub- to superradiance. We then encode a single qubit in the two-ion superradiant state and show that this encoding enhances the transfer of quantum information onto a photon.

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Cited by in corpus (76)

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• Quantum State Transfer via Noisy Photonic and Phononic Waveguides
• Generation and controllable switching of superradiant and subradiant states in a 10-qubit superconducting circuit
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• Cooperative Ordering in Lattices of Interacting Two-Level Dipoles
• Cooperative eigenmodes and scattering in 1D atomic arrays
• Interference and dynamics of light from a distance-controlled atom pair in an optical cavity
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• Mølmer-Sørensen entangling gate for cavity QED systems
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