Quantum coherence in a mesoscopic Joseph
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Jian Zou; Bin Shao
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Article
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1999
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Elsevier Science
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English
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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 sup