Berry’s phase in cavity QED: Proposal for observing an effect of field quantization

We propose a feasible experiment to investigate quantum effects in geometric phases, arising when a classical source drives not a single quantum system, but two interacting ones. In particular, we show how to observe a signature of the quantization of the electromagnetic field through a vacuum effec...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-06, Vol.67 (6), Article 063804
Main Authors: Carollo, A., Santos, M. França, Vedral, V.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
ELECTROMAGNETIC FIELDS
INTERACTIONS
OPTICS
PHOTON-ATOM COLLISIONS
QUANTIZATION
QUANTUM ELECTRODYNAMICS
QUANTUM MECHANICS
SEMICLASSICAL APPROXIMATION
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Summary:We propose a feasible experiment to investigate quantum effects in geometric phases, arising when a classical source drives not a single quantum system, but two interacting ones. In particular, we show how to observe a signature of the quantization of the electromagnetic field through a vacuum effect in Berry's phase. To do so, we describe the interaction of an atom and a quantized cavity mode altogether driven by an external quasiclassical field. We also analyze the semiclassical limit recovering the usual Berry's phase results.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.67.063804