Coherent Temporal Oscillations of Macroscopic Quantum States in a Josephson Junction
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- Yang Yu
- Department of Physics and Astronomy,
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- Siyuan Han
- Department of Physics and Astronomy,
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- Xi Chu
- Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA.
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- Shih-I Chu
- Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA.
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- Zhen Wang
- Kansai Advanced Research Center, Communication Research Laboratory, Ministry of Posts and Telecommunications, 588-2 Iwaoka, Iwaoka-cho, Nishi-ku, Kobe, 651-24 Japan.
Abstract
<jats:p>We report the generation and observation of coherent temporal oscillations between the macroscopic quantum states of a Josephson tunnel junction by applying microwaves with frequencies close to the level separation. Coherent temporal oscillations of excited state populations were observed by monitoring the junction's tunneling probability as a function of time. From the data, the lower limit of phase decoherence time was estimated to be about 5 microseconds.</jats:p>
Journal
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- Science
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Science 296 (5569), 889-892, 2002-05-03
American Association for the Advancement of Science (AAAS)
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Details 詳細情報について
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- CRID
- 1363388845008578560
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- NII Article ID
- 30020379307
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- ISSN
- 10959203
- 00368075
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- Data Source
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- Crossref
- CiNii Articles