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Controlled entanglement of two field modes in a Cavity Quantum Electrodynamics experiment

A. Rauschenbeutel·P. Bertet·S. Osnaghi·G. Nogues·M. Brune·J. M. Raimond·S. Haroche
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Abstract

Using a single circular Rydberg atom, we have prepared two modes of a superconducting cavity in a maximally entangled state. The two modes share a single photon. This entanglement is revealed by a second atom probing, after a delay, the correlations between the two modes. This experiment opens interesting perspectives for quantum information manipulation and fundamental tests of quantum theory.

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A. Rauschenbeutel, P. Bertet, S. Osnaghi, G. Nogues, M. Brune, J. M. Raimond, S. Haroche. 2001-05-14. Controlled entanglement of two field modes in a Cavity Quantum Electrodynamics experiment. https://doi.org/10.1103/physreva.64.050301

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