Generation of EPR-entangled radiation through an atomic reservoir

Abstract

We propose a scheme for generating two-mode squeezing in high-Q resonators using a beam of atoms with random arrival times, which acts as a reservoir for the field. The scheme is based on four-wave mixing processes leading to emission into two cavity modes, which are resonant with the Rabi sidebands of the atomic dipole transition, driven by a saturating classical field. At steady state the cavity modes are in an Einstein-Podolski-Rosen (EPR) state, whose degree of entanglement is controlled by the intensity and the frequency of the transverse field. This scheme is robust against stochastic fluctuations in the atomic beam, does not require atomic detection nor velocity selection, and can be realized by presently available experimental setups with microwave resonators.

4 pages, 3 figures, final version, to appear in Phys. Rev. Lett

References in corpus (2)

• Quantum teleportation between light and matter
• Quantum Beat of Two Single Photons

Cited by in corpus (8)

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• Numerical investigation of the quantum fluctuations of optical fields transmitted through an atomic medium
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• Generation of two-mode field squeezing through selective dynamics in cavity QED
• Controlled generation of field squeezing with cold atomic clouds coupled to a superconducting transmission line resonator
• Generalized squeezing operators, bipartite Wigner functions and entanglement via Wehrl's entropy functionals
• Theoretical method for the generation of a dark two-mode squeezed state of a trapped ion