Josephson oscillations between exciton condensates in electrostatic traps
Mesoscale and Nanoscale Physics
2009-08-28 v3
Abstract
Technological advances allow for tunable lateral confinement of cold dipolar excitons in coupled quantum wells. We consider theoretically the Josephson effect between exciton condensates in two traps separated by a weak link. The flow of the exciton supercurrent is driven by the dipole energy difference between the traps. The Josephson oscillations may be observed after ensemble average of the time correlation of photons separately emitted from the two traps. The fringe visibility is controlled by the trap coupling and is robust against quantum and thermal fluctuations.
Keywords
Cite
@article{arxiv.0902.3967,
title = {Josephson oscillations between exciton condensates in electrostatic traps},
author = {Massimo Rontani and L. J. Sham},
journal= {arXiv preprint arXiv:0902.3967},
year = {2009}
}
Comments
RevTeX 4.0. 6 pages, 3 figures. We added new material (Fig. 3) and references. To appear in Physical Review B