dorsal/arxiv
View SchemaNon-conditioned generation of Schroedinger cat states in a cavity
| Authors | P. P. Munhoz, A. Vidiella-Barranco |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0406152 |
| URL | https://arxiv.org/abs/quant-ph/0406152 |
| DOI | 10.1080/09500340500058116 |
| Journal | J. Mod. Opt. 52(11), 1557 (2005) |
Abstract
We investigate the dynamics of a two-level atom in a cavity filled with a nonlinear medium. We show that the atom-field detuning $\delta$ and the nonlinear parameter $\chi^{(3)}$ may be combined to yield a periodic dynamics and allowing the generation of almost exact superpositions of coherent states ({\sl Schr\"odinger} cats). By analysing the atomic inversion and the field purity, we verify that any initial atom-field state is recovered at each revival time, and that a coherent field interacting with an excited atom evolves to a superposition of coherent states at each collapse time. We show that a mixed field state (statistical mixture of two coherent states) evolves towards a pure field state ({\sl Schr\"odinger} cat) as well. We discuss the validity of those results by using the field fidelity and the {\sl Wigner} function.
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"abstract": "We investigate the dynamics of a two-level atom in a cavity filled with a\nnonlinear medium. We show that the atom-field detuning $\\delta$ and the\nnonlinear parameter $\\chi^{(3)}$ may be combined to yield a periodic dynamics\nand allowing the generation of almost exact superpositions of coherent states\n({\\sl Schr\\\"odinger} cats). By analysing the atomic inversion and the field\npurity, we verify that any initial atom-field state is recovered at each\nrevival time, and that a coherent field interacting with an excited atom\nevolves to a superposition of coherent states at each collapse time. We show\nthat a mixed field state (statistical mixture of two coherent states) evolves\ntowards a pure field state ({\\sl Schr\\\"odinger} cat) as well. We discuss the\nvalidity of those results by using the field fidelity and the {\\sl Wigner}\nfunction.",
"arxiv_id": "quant-ph/0406152",
"authors": [
"P. P. Munhoz",
"A. Vidiella-Barranco"
],
"categories": [
"quant-ph"
],
"doi": "10.1080/09500340500058116",
"journal_ref": "J. Mod. Opt. 52(11), 1557 (2005)",
"title": "Non-conditioned generation of Schroedinger cat states in a cavity",
"url": "https://arxiv.org/abs/quant-ph/0406152"
},
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