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Quantum coherence in a mesoscopic Josephson junction

โœ Scribed by Jian Zou; Bin Shao

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
51 KB
Volume
256
Category
Article
ISSN
0375-9601

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โœฆ Synopsis

We consider a mesoscopic Josephson junction in a circular superconducting ring which encloses a magnetostatic flux. It is shown that the state of the junction can evolve in a quantum superposition of two coherent states. It is also shown that the destructive interference between these two states suppresses the supercurrent, and the dynamic behavior of the supercurrent shows collapse and revival phenomena.

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