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Article Dans Une Revue Physical Review Letters Année : 2006

Phonon Squeezing in a Superconducting Molecular Transistor

Résumé

Josephson transport through a single molecule or carbon nanotube is considered in the presence of a local vibrational mode coupled to the electronic charge. The ground-state solution is obtained exactly in the limit of a large superconducting gap, and is extended to the general case by variational analysis. Coherent charge fluctuations are entangled with non-classical phonon states. The Josephson current induces squeezing of the phonon mode, which is controlled by the superconducting phase difference and by the junction asymmetry. Optical probes of non-classical phonon states are briefly discussed.
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Dates et versions

hal-00080934 , version 1 (21-06-2006)
hal-00080934 , version 2 (28-09-2006)

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Citer

A. Zazunov, Denis Feinberg, Thierry Martin. Phonon Squeezing in a Superconducting Molecular Transistor. Physical Review Letters, 2006, 97 (19), pp.196801. ⟨hal-00080934v2⟩
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