dorsal/arxiv
View SchemaGeometric Phase of a qubit interacting with a squeezed-thermal bath
| Authors | Subhashish Banerjee, R. Srikanth |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0611161 |
| URL | https://arxiv.org/abs/quant-ph/0611161 |
| DOI | 10.1140/epjd/e2007-00291-5 |
| Journal | Eur. Phys. J. D 46, 335 (2008) |
Abstract
We study the geometric phase of an open two-level quantum system under the influence of a squeezed, thermal environment for both non-dissipative as well as dissipative system-environment interactions. In the non-dissipative case, squeezing is found to have a similar influence as temperature, of suppressing geometric phase, while in the dissipative case, squeezing tends to counteract the suppressive influence of temperature in certain regimes. Thus, an interesting feature that emerges from our work is the contrast in the interplay between squeezing and thermal effects in non-dissipative and dissipative interactions. This can be useful for the practical implementation of geometric quantum information processing. By interpreting the open quantum effects as noisy channels, we make the connection between geometric phase and quantum noise processes familiar from quantum information theory.
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"abstract": "We study the geometric phase of an open two-level quantum system under the\ninfluence of a squeezed, thermal environment for both non-dissipative as well\nas dissipative system-environment interactions. In the non-dissipative case,\nsqueezing is found to have a similar influence as temperature, of suppressing\ngeometric phase, while in the dissipative case, squeezing tends to counteract\nthe suppressive influence of temperature in certain regimes. Thus, an\ninteresting feature that emerges from our work is the contrast in the interplay\nbetween squeezing and thermal effects in non-dissipative and dissipative\ninteractions. This can be useful for the practical implementation of geometric\nquantum information processing. By interpreting the open quantum effects as\nnoisy channels, we make the connection between geometric phase and quantum\nnoise processes familiar from quantum information theory.",
"arxiv_id": "quant-ph/0611161",
"authors": [
"Subhashish Banerjee",
"R. Srikanth"
],
"categories": [
"quant-ph",
"cond-mat.other"
],
"doi": "10.1140/epjd/e2007-00291-5",
"journal_ref": "Eur. Phys. J. D 46, 335 (2008)",
"title": "Geometric Phase of a qubit interacting with a squeezed-thermal bath",
"url": "https://arxiv.org/abs/quant-ph/0611161"
},
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