Coherently opening a high-Q cavity

Abstract

We propose a general framework to effectively `open' a high-Q resonator, that is, to release the quantum state initially prepared in it in the form of a traveling electromagnetic wave. This is achieved by employing a mediating mode that scatters coherently the radiation from the resonator into a one-dimensional continuum of modes such as a waveguide. The same mechanism may be used to `feed' a desired quantum field to an initially empty cavity. Switching between an `open' and `closed' resonator may then be obtained by controlling either the detuning of the scatterer or the amount of time it spends in the resonator. First, we introduce the model in its general form, identifying (i) the traveling mode that optimally retains the full quantum information of the resonator field and (ii) a suitable figure of merit that we study analytically in terms of the system parameters. Then, we discuss two feasible implementations based on ensembles of two-level atoms interacting with cavity fields. In addition, we discuss how to integrate traditional cavity QED in our proposal using three-level atoms.

5+3 pages, 3+1 figures

References in corpus (11)

• The Quantum Internet
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• Quantum information processing with circuit quantum electrodynamics
• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Cavity QED with a Bose-Einstein condensate
• Fiber Fabry-Perot cavity with high finesse
• Electromagnetically induced transparency with single atoms in a cavity
• Tunable ion-photon entanglement in an optical cavity
• Dynamic release of trapped light from an ultrahigh-Q nanocavity via adiabatic frequency tuning
• Creation, storage, and on-demand release of optical quantum states with a negative Wigner function
• Input-output Gaussian channels: theory and application

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