Entropy production in open quantum systems: exactly solvable qubit models
We present analytical results for the time-dependent information entropy in exactly solvable two-state (qubit) models. The first model describes dephasing (decoherence) in a qubit coupled to a bath of harmonic oscillators. The entropy production for this model in the regimes of "complete"...
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| Дата: | 2012 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2012
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120301 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Entropy production in open quantum systems: exactly solvable qubit models / V.G.Morozov, G. Röpke // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43004:1-9. — Бібліогр.: 15 назв. — англ. |
Репозитарії
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irk-123456789-1203012017-06-12T03:04:13Z Entropy production in open quantum systems: exactly solvable qubit models Morozov, V.G. Röpke, G. We present analytical results for the time-dependent information entropy in exactly solvable two-state (qubit) models. The first model describes dephasing (decoherence) in a qubit coupled to a bath of harmonic oscillators. The entropy production for this model in the regimes of "complete" and "incomplete" decoherence is discussed. As another example, we consider the damped Jaynes-Cummings model describing a spontaneous decay of a two-level system into the field vacuum. It is shown that, for all strengths of coupling, the open system passes through the mixed state with the maximum information entropy. Ми представляємо аналiтичнi результати для часовозалежної iнформацiйної ентропiї в двостанових точно розв’язних (кубiт) моделях. Перша модель описує дефазування (декогеренцiю) в кубiтi, який є зв’язаний з резервуаром гармонiчних осциляторiв. Обговорюється продукування ентропiї для цiєї моделi у режимах “повної” та “неповної” декогеренцiї. Як iнший приклад ми розглядаємо задемпфовану модель Джейнса-Каммiнгса, яка описує спонтанне затухання дворiвневої системи в польовому вакуумi. Показано, що для всiх сил зв’язку, вiдкрита система переходить через змiшаний стан з максимумом iнформацiйної ентропiї. 2012 Article Entropy production in open quantum systems: exactly solvable qubit models / V.G.Morozov, G. Röpke // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43004:1-9. — Бібліогр.: 15 назв. — англ. PACS: 03.65.Ud, 03.65.Yz DOI:10.5488/CMP.15.43004 arXiv:1212.6135 http://dspace.nbuv.gov.ua/handle/123456789/120301 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
We present analytical results for the time-dependent information entropy in exactly solvable two-state (qubit) models. The first model describes dephasing (decoherence) in a qubit coupled to a bath of harmonic oscillators. The entropy production for this model in the regimes of "complete" and "incomplete" decoherence is discussed. As another example, we consider the damped Jaynes-Cummings model describing a spontaneous decay of a two-level system into the field vacuum. It is shown that, for all strengths of coupling, the open system passes through the mixed state with the maximum information entropy. |
| format |
Article |
| author |
Morozov, V.G. Röpke, G. |
| spellingShingle |
Morozov, V.G. Röpke, G. Entropy production in open quantum systems: exactly solvable qubit models Condensed Matter Physics |
| author_facet |
Morozov, V.G. Röpke, G. |
| author_sort |
Morozov, V.G. |
| title |
Entropy production in open quantum systems: exactly solvable qubit models |
| title_short |
Entropy production in open quantum systems: exactly solvable qubit models |
| title_full |
Entropy production in open quantum systems: exactly solvable qubit models |
| title_fullStr |
Entropy production in open quantum systems: exactly solvable qubit models |
| title_full_unstemmed |
Entropy production in open quantum systems: exactly solvable qubit models |
| title_sort |
entropy production in open quantum systems: exactly solvable qubit models |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2012 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120301 |
| citation_txt |
Entropy production in open quantum systems: exactly solvable qubit models / V.G.Morozov, G. Röpke // Condensed Matter Physics. — 2012. — Т. 15, № 4. — С. 43004:1-9. — Бібліогр.: 15 назв. — англ. |
| series |
Condensed Matter Physics |
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AT morozovvg entropyproductioninopenquantumsystemsexactlysolvablequbitmodels AT ropkeg entropyproductioninopenquantumsystemsexactlysolvablequbitmodels |
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2023-10-18T20:36:40Z |
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2023-10-18T20:36:40Z |
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1796150646342156288 |