dorsal/arxiv
View SchemaEntanglement and purity of two-mode Gaussian states in noisy channels
| Authors | Alessio Serafini, Fabrizio Illuminati, Matteo G. A. Paris, Silvio De Siena |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310087 |
| URL | https://arxiv.org/abs/quant-ph/0310087 |
| DOI | 10.1103/PhysRevA.69.022318 |
| Journal | Phys. Rev. A 69, 022318 (2004) |
Abstract
We study the evolution of purity, entanglement and total correlations of general two--mode Gaussian states of continuous variable systems in arbitrary uncorrelated Gaussian environments. The time evolution of purity, Von Neumann entropy, logarithmic negativity and mutual information is analyzed for a wide range of initial conditions. In general, we find that a local squeezing of the bath leads to a faster degradation of purity and entanglement, while it can help to preserve the mutual information between the modes.
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"abstract": "We study the evolution of purity, entanglement and total correlations of\ngeneral two--mode Gaussian states of continuous variable systems in arbitrary\nuncorrelated Gaussian environments. The time evolution of purity, Von Neumann\nentropy, logarithmic negativity and mutual information is analyzed for a wide\nrange of initial conditions. In general, we find that a local squeezing of the\nbath leads to a faster degradation of purity and entanglement, while it can\nhelp to preserve the mutual information between the modes.",
"arxiv_id": "quant-ph/0310087",
"authors": [
"Alessio Serafini",
"Fabrizio Illuminati",
"Matteo G. A. Paris",
"Silvio De Siena"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1103/PhysRevA.69.022318",
"journal_ref": "Phys. Rev. A 69, 022318 (2004)",
"title": "Entanglement and purity of two-mode Gaussian states in noisy channels",
"url": "https://arxiv.org/abs/quant-ph/0310087"
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