dorsal/arxiv
View SchemaMinimum decoherence cat-like states in Gaussian noisy channels
| Authors | A. Serafini, S. De Siena, F. Illuminati, M. G. A. Paris |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310005 |
| URL | https://arxiv.org/abs/quant-ph/0310005 |
| DOI | 10.1088/1464-4266/6/6/019 |
| Journal | J.Opt.BQuant.Semiclass.Opt.6:S591,2004 |
Abstract
We address the evolution of cat-like states in general Gaussian noisy channels, by considering superpositions of coherent and squeezed-coherent states coupled to an arbitrarily squeezed bath. The phase space dynamics is solved and decoherence is studied keeping track of the purity of the evolving state. The influence of the choice of the state and channel parameters on purity is discussed and optimal working regimes that minimize the decoherence rate are determined. In particular, we show that squeezing the bath to protect a non squeezed cat state against decoherence is equivalent to orthogonally squeezing the initial cat state while letting the bath be phase insensitive.
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"abstract": "We address the evolution of cat-like states in general Gaussian noisy\nchannels, by considering superpositions of coherent and squeezed-coherent\nstates coupled to an arbitrarily squeezed bath. The phase space dynamics is\nsolved and decoherence is studied keeping track of the purity of the evolving\nstate. The influence of the choice of the state and channel parameters on\npurity is discussed and optimal working regimes that minimize the decoherence\nrate are determined. In particular, we show that squeezing the bath to protect\na non squeezed cat state against decoherence is equivalent to orthogonally\nsqueezing the initial cat state while letting the bath be phase insensitive.",
"arxiv_id": "quant-ph/0310005",
"authors": [
"A. Serafini",
"S. De Siena",
"F. Illuminati",
"M. G. A. Paris"
],
"categories": [
"quant-ph",
"cond-mat",
"hep-th",
"physics.optics"
],
"doi": "10.1088/1464-4266/6/6/019",
"journal_ref": "J.Opt.BQuant.Semiclass.Opt.6:S591,2004",
"title": "Minimum decoherence cat-like states in Gaussian noisy channels",
"url": "https://arxiv.org/abs/quant-ph/0310005"
},
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