Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-09-26
Phys. Rev. B 75, 184528 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
22 pages, 7 figures; v3 (published version): added references, improved readability
Scientific paper
10.1103/PhysRevB.75.184528
We discuss coherent transport of Cooper pairs through a Cooper pair shuttle. We analyze both the DC and AC Josephson effect in the two limiting cases where the charging energy $E_C$ is either much larger or much smaller than the Josephson coupling $E_J$. In the limit $E_J \ll E_C$ we present the detailed behavior of the critical current as a function of the damping rates and the dynamical phases. The AC effect in this regime is very sensitive to all dynamical scales present in the problem. The effect of fluctuations of the external periodic driving is discussed as well. In the opposite regime the system can be mapped onto the quantum kicked rotator, a classically chaotic system. We investigate the transport properties also in this regime showing that the underlying classical chaotic dynamics emerges as an incoherent transfer of Cooper pairs through the shuttle. For an appropriate choice of the parameters the Cooper pair shuttle can exhibit the phenomenon of dynamical localization. We discuss in details the properties of the localized regime as a function of the phase difference between the superconducting electrodes and the decoherence due to gate voltage fluctuations. Finally we point how dynamical localization is reflected in the noise properties of the shuttle.
Fazio Rosario
Montangero Simone
Romito Alessandro
No associations
LandOfFree
Transport properties of a periodically driven superconducting single electron transistor does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Transport properties of a periodically driven superconducting single electron transistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport properties of a periodically driven superconducting single electron transistor will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-260855