dorsal/arxiv
View SchemaSurvival of quantum effects for observables after decoherence
| Authors | G. P. Berman, A. R. Bishop, F. Borgonovi, D. A. R. Dalvit |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0401038 |
| URL | https://arxiv.org/abs/quant-ph/0401038 |
| DOI | 10.1103/PhysRevA.69.062110 |
| Journal | Phys. Rev. A 69, 062110 (2004) |
Abstract
When a quantum nonlinear system is linearly coupled to an infinite bath of harmonic oscillators, quantum coherence of the system is lost on a decoherence time-scale $\tau_D$. Nevertheless, quantum effects for observables may still survive environment-induced decoherence, and be observed for times much larger than the decoherence time-scale. In particular, we show that the Ehrenfest time, which characterizes a departure of quantum dynamics for observables from the corresponding classical dynamics, can be observed for a quasi-classical nonlinear oscillator for times $\tau \gg\tau_D$. We discuss this observation in relation to recent experiments on quantum nonlinear systems in the quasi-classical region of parameters.
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"abstract": "When a quantum nonlinear system is linearly coupled to an infinite bath of\nharmonic oscillators, quantum coherence of the system is lost on a decoherence\ntime-scale $\\tau_D$. Nevertheless, quantum effects for observables may still\nsurvive environment-induced decoherence, and be observed for times much larger\nthan the decoherence time-scale. In particular, we show that the Ehrenfest\ntime, which characterizes a departure of quantum dynamics for observables from\nthe corresponding classical dynamics, can be observed for a quasi-classical\nnonlinear oscillator for times $\\tau \\gg\\tau_D$. We discuss this observation in\nrelation to recent experiments on quantum nonlinear systems in the\nquasi-classical region of parameters.",
"arxiv_id": "quant-ph/0401038",
"authors": [
"G. P. Berman",
"A. R. Bishop",
"F. Borgonovi",
"D. A. R. Dalvit"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.69.062110",
"journal_ref": "Phys. Rev. A 69, 062110 (2004)",
"title": "Survival of quantum effects for observables after decoherence",
"url": "https://arxiv.org/abs/quant-ph/0401038"
},
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