Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 41, Issue 1, Pages 70-73Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physe.2008.06.002
Keywords
Optical bistability (OB); Interdot tunnel coupling; Quantum dots
Funding
- National Natural Science Foundation of China [10634060, 10575040, 60478029, 10747133]
- National Basic Research Program of China [2005CB724508]
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We investigate the behavior of optical bistability (OB) in an asymmetry semiconductor double quantum dot (QD) using the tunnel coupling. Such a tunable three-level QD system is driven coherently by a laser field inside the unidirectional ring cavity. The results show that we are able to control efficiently the bistable threshold intensity and the hysteresis loop by tuning the parameters of the system such as the gate voltage and laser frequency. The results obtained can be used for the development of new types of nanoelectronic devices for realizing switching process. (C) 2008 Elsevier B.V. All rights reserved.
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