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...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2013 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/118259 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862599421269639168 |
|---|---|
| author | Du, Lingjie Yu, Yang Lan, D. |
| author_facet | Du, Lingjie Yu, Yang Lan, D. |
| 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. |
| collection | DSpace DC |
| container_title | 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.
|
| first_indexed | 2025-11-27T22:35:22Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-118259 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-27T22:35:22Z |
| publishDate | 2013 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Du, Lingjie Yu, Yang Lan, D. 2017-05-29T14:16:39Z 2017-05-29T14:16:39Z 2013 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 https://nasplib.isofts.kiev.ua/handle/123456789/118259 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. We thank S.O. Valenzuela for useful discussions.
 This work was partly supported by the State Key Program for Basic Researches of China (2011CB922104,
 2011CBA00205), the NSFC (91021003), the Natural
 Science Foundation of Jiangsu Province (BK2010012),
 and PAPD. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная Optimal cooling of a driven artificial atom in dissipative environment Article published earlier |
| spellingShingle | Optimal cooling of a driven artificial atom in dissipative environment Du, Lingjie Yu, Yang Lan, D. Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| title | 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_short | Optimal cooling of a driven artificial atom in dissipative environment |
| title_sort | optimal cooling of a driven artificial atom in dissipative environment |
| topic | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/118259 |
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