Eur. Phys. J. D 32, 147-151 (2005)
https://doi.org/10.1140/epjd/e2004-00178-y

One-step generation of high-quality squeezed and EPR states in cavity QED

Departamento de Física, Universidade Federal de São Carlos, P.O. Box 676, São Carlos, 13565-905, São Paulo, Brazil

Corresponding author: ^a miled@df.ufscar.br

Received: 30 June 2004
Revised: 26 October 2004
Published online: 7 December 2004

Abstract

We show how to generate bilinear (quadratic) Hamiltonians in cavity quantum electrodynamics (QED) through the interaction of a single driven three-level atom with two (one) cavity modes. With this scheme it is possible to generate one-mode mesoscopic squeezed superpositions, two-mode entanglements, and two-mode squeezed vacuum states (such the original EPR state), without the need for Ramsey zones and external parametric amplification. The degree of squeezing achieved is up to 99% with currently feasible experimental parameters and the errors due to dissipative mechanisms become practically negligible.