Phase space structure of generalized Gaussian cat states

We analyze generalized Gaussian cat states obtained by superposing arbitrary Gaussian states. The structure of the interference term of the Wigner function is always hyperbolic, surviving the action of a thermal reservoir. We also consider certain superpositions of mixed Gaussian states. An applicat...

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Bibliographic Details
Published in:Physics letters. A 2010-09, Vol.374 (43), p.4385-4392
Main Authors: Nicacio, Fernando, Maia, Raphael N.P., Toscano, Fabricio, Vallejos, Raúl O.
Format: Article
Language:English
Subjects:
Atomic structure
Decoherence
Dynamics
Gaussian
Interference
Reservoirs
Semiclassical propagation
Solid state physics
Space environment
Spacecraft
Wigner function
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Summary:We analyze generalized Gaussian cat states obtained by superposing arbitrary Gaussian states. The structure of the interference term of the Wigner function is always hyperbolic, surviving the action of a thermal reservoir. We also consider certain superpositions of mixed Gaussian states. An application to semiclassical dynamics is discussed.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2010.08.076