Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect
We propose a method of diagnostics of a degenerate ground state of Bose condensate in a double- well potential. The method is based on the study of the one-particle coherent tunneling under switching of the time-dependent weak Josephson coupling between the wells. We obtain a simple expression th...
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| Published in: | Физика низких температур |
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| Date: | 2005 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2005
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/121801 |
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| Cite this: | Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect / E.D. Vol // Физика низких температур. — 2005. — Т. 31, № 2. — С. 131-133. — Бібліогр.: 7 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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Vol, E.D. 2017-06-18T06:34:20Z 2017-06-18T06:34:20Z 2005 Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect / E.D. Vol // Физика низких температур. — 2005. — Т. 31, № 2. — С. 131-133. — Бібліогр.: 7 назв. — англ. 0132-6414 PACS: 03.75.Fi, 05.30.Jp https://nasplib.isofts.kiev.ua/handle/123456789/121801 We propose a method of diagnostics of a degenerate ground state of Bose condensate in a double- well potential. The method is based on the study of the one-particle coherent tunneling under switching of the time-dependent weak Josephson coupling between the wells. We obtain a simple expression that allows one to determine the phase of the condensate and the total number of the particles in the condensate from the relative number of particles in the two wells Δn = n₁ - n₂ measured before the Josephson coupling is switched on and after it is switched off. The specifics of the application of the method in the cases of the external and the internal Josephson effect are discussed. I would like to acknowledge R.I. Shekhter, S.I. Shevchenko, and D.V. Fil for discussion of the results presented in this article. This work is supported by INTAS Grant No 01-2344. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect |
| spellingShingle |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect Vol, E.D. Квантовые жидкости и квантовые кpисталлы |
| title_short |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect |
| title_full |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect |
| title_fullStr |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect |
| title_full_unstemmed |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect |
| title_sort |
diagnostics of macroscopic quantum states of bose–einstein condensate in double-well potential by nonstationary josephson effect |
| author |
Vol, E.D. |
| author_facet |
Vol, E.D. |
| topic |
Квантовые жидкости и квантовые кpисталлы |
| topic_facet |
Квантовые жидкости и квантовые кpисталлы |
| publishDate |
2005 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
We propose a method of diagnostics of a degenerate ground state of Bose condensate in a double-
well potential. The method is based on the study of the one-particle coherent tunneling under
switching of the time-dependent weak Josephson coupling between the wells. We obtain a simple
expression that allows one to determine the phase of the condensate and the total number of the
particles in the condensate from the relative number of particles in the two wells Δn = n₁ -
n₂ measured
before the Josephson coupling is switched on and after it is switched off. The specifics of the
application of the method in the cases of the external and the internal Josephson effect are discussed.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/121801 |
| citation_txt |
Diagnostics of macroscopic quantum states of Bose–Einstein condensate in double-well potential by nonstationary Josephson effect / E.D. Vol // Физика низких температур. — 2005. — Т. 31, № 2. — С. 131-133. — Бібліогр.: 7 назв. — англ. |
| work_keys_str_mv |
AT voled diagnosticsofmacroscopicquantumstatesofboseeinsteincondensateindoublewellpotentialbynonstationaryjosephsoneffect |
| first_indexed |
2025-12-07T19:19:56Z |
| last_indexed |
2025-12-07T19:19:56Z |
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1850878403353247744 |