We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Spatial-symmetry-induced dark states and charge trapping effects in the coupled quantum dots.
- Authors
Maslova, N.; Mantsevich, V.; Arseev, P.
- Abstract
In a system of N interacting single-level quantum dots (QDs), we study the relaxation dynamics and the current-voltage characteristics determined by symmetry properties of the QD arrangement. Different numbers of dots, initial charge configurations, and various coupling regimes to reservoirs are considered. We reveal that effective charge trapping occurs for particular regimes of coupling to the reservoir when more than two dots form a ring structure with the C spatial symmetry. We reveal that the effective charge trapping caused by the C spatial symmetry of N coupled QDs depends on the number of dots and the way of coupling to the reservoirs. We demonstrate that the charge trapping effect is directly connected with the formation of dark states, which are not coupled to reservoirs due to the system spatial symmetry C . We also reveal the symmetry blockade of the tunneling current caused by the presence of dark states.
- Subjects
DARK states (Quantum optics); QUANTUM dots; RELAXATION (Nuclear physics); CURRENT-voltage characteristics; COUPLING constants; QUANTUM tunneling
- Publication
Journal of Experimental & Theoretical Physics, 2016, Vol 122, Issue 6, p1084
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776116060169