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
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.
PACS: 32.80.-t – Photon interactions with atoms / 42.50.Ct – Quantum description of interaction of light and matter; related experiments / 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005