Quantum rotor in nanostructured superconductors.
Sci Rep
; 4: 4542, 2014 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-24686241
ABSTRACT
Despite its apparent simplicity, the idealized model of a particle constrained to move on a circle has intriguing dynamic properties and immediate experimental relevance. While a rotor is rather easy to set up classically, the quantum regime is harder to realize and investigate. Here we demonstrate that the quantum dynamics of quasiparticles in certain classes of nanostructured superconductors can be mapped onto a quantum rotor. Furthermore, we provide a straightforward experimental procedure to convert this nanoscale superconducting rotor into a regular or inverted quantum pendulum with tunable gravitational field, inertia, and drive. We detail how these novel states can be detected via scanning tunneling spectroscopy. The proposed experiments will provide insights into quantum dynamics and quantum chaos.
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MEDLINE
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2014
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Article
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Bélgica