https://doi.org/10.1007/s100530050355
ac Stark effect for a two-level atom in a squeezed vacuum via a two-photon process
CCAST (World Laboratory), P.O.Box 8730, Beijing 100080, and
Laboratory for High Intensity Optics, Shanghai Institute of Optics and
Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800,
P.R. China
Received:
2
February
1999
Revised:
20
April
1999
Published online: 15 August 1999
The nondegenerate two-photon interaction of a two-level atom with a broadband multimode squeezed vacuum is investigated. We find that in the two-photon process the squeezed vacuum has a driving effect on the atom which can lead to an ac Stark effect when the average photon number of the squeezed vacuum is larger than a critical value.
PACS: 42.50.-p – Quantum optics / 32.80.-t – Photon interactions with atoms
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
