Optimal cooling of a driven artificial atom in dissipative environment
We study microwave-driven cooling in a superconducting flux qubit subjected to environment noises. For the weak decoherence, our analytical results agree well with the experimental observations and show that the microwave amplitude for optimal cooling should depend linearly on the dc flux detuning...
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| Дата: | 2013 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/118259 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Optimal cooling of a driven artificial atom in dissipative environment / Lingjie Du, Yang Yu, D. Lan // Физика низких температур. — 2013. — Т. 39, № 2. — С. 150–161. — Бібліогр.: 62 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-118259 |
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| record_format |
dspace |
| spelling |
irk-123456789-1182592017-05-30T03:03:45Z Optimal cooling of a driven artificial atom in dissipative environment Du, Lingjie Yu, Yang Lan, D. Свеpхпpоводимость, в том числе высокотемпеpатуpная We study microwave-driven cooling in a superconducting flux qubit subjected to environment noises. For the weak decoherence, our analytical results agree well with the experimental observations and show that the microwave amplitude for optimal cooling should depend linearly on the dc flux detuning. With the decoherence stronger, more vibrational degrees of freedom (analogous with atomic physics) couple in, making the ordinary cooling method less effective or even fail. We propose an improved cooling method, which can eliminate the perturbation of additional vibrational degrees of freedom hence keep high efficiency, even under the strong decoherence. Furthermore, we point out that the decoherence can tune the frequency where microwave-driven Landau–Zener transition reaches maximum, displaying the feature of incoherent dynamics which is important for the optimal cooling of qubits and other quantum systems. 2013 Article Optimal cooling of a driven artificial atom in dissipative environment / Lingjie Du, Yang Yu, D. Lan // Физика низких температур. — 2013. — Т. 39, № 2. — С. 150–161. — Бібліогр.: 62 назв. — англ. 0132-6414 PACS: 37.10.De, 03.65.Yz, 85.25.–j, 03.67.Lx http://dspace.nbuv.gov.ua/handle/123456789/118259 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| spellingShingle |
Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная Du, Lingjie Yu, Yang Lan, D. Optimal cooling of a driven artificial atom in dissipative environment Физика низких температур |
| description |
We study microwave-driven cooling in a superconducting flux qubit subjected to environment noises. For the
weak decoherence, our analytical results agree well with the experimental observations and show that the microwave
amplitude for optimal cooling should depend linearly on the dc flux detuning. With the decoherence
stronger, more vibrational degrees of freedom (analogous with atomic physics) couple in, making the ordinary
cooling method less effective or even fail. We propose an improved cooling method, which can eliminate the
perturbation of additional vibrational degrees of freedom hence keep high efficiency, even under the strong decoherence.
Furthermore, we point out that the decoherence can tune the frequency where microwave-driven
Landau–Zener transition reaches maximum, displaying the feature of incoherent dynamics which is important
for the optimal cooling of qubits and other quantum systems. |
| format |
Article |
| author |
Du, Lingjie Yu, Yang Lan, D. |
| author_facet |
Du, Lingjie Yu, Yang Lan, D. |
| author_sort |
Du, Lingjie |
| title |
Optimal cooling of a driven artificial atom in dissipative environment |
| title_short |
Optimal cooling of a driven artificial atom in dissipative environment |
| title_full |
Optimal cooling of a driven artificial atom in dissipative environment |
| title_fullStr |
Optimal cooling of a driven artificial atom in dissipative environment |
| title_full_unstemmed |
Optimal cooling of a driven artificial atom in dissipative environment |
| title_sort |
optimal cooling of a driven artificial atom in dissipative environment |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2013 |
| topic_facet |
Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/118259 |
| citation_txt |
Optimal cooling of a driven artificial atom
in dissipative environment / Lingjie Du, Yang Yu, D. Lan // Физика низких температур. — 2013. — Т. 39, № 2. — С. 150–161. — Бібліогр.: 62 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT dulingjie optimalcoolingofadrivenartificialatomindissipativeenvironment AT yuyang optimalcoolingofadrivenartificialatomindissipativeenvironment AT land optimalcoolingofadrivenartificialatomindissipativeenvironment |
| first_indexed |
2023-10-18T20:31:32Z |
| last_indexed |
2023-10-18T20:31:32Z |
| _version_ |
1796150432454672384 |