Abstract
We suggest a system of ground state excitons in multiple InAs-GaSb coupled quantum wells as a new source of superradiance. Coupled InAs-GaSb quantum wells can be tuned to a very large wavelength that makes it possible to fabricate a sample with a large number of quantum wells radiating in phase, and in this way to increase the superradiant effect. Depending on the parameters of the system, this superradiance may be a direct analogy of the known Dicke case, or a realization of new type N-level superradiance. In the last case, the time dependence of the luminescence presents N decaying peaks. This dependence may be considered as a manifestation of transition to the Bose condensate phase.
Original language | American English |
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Article number | 245333 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 72 |
Issue number | 24 |
DOIs | |
State | Published - 15 Dec 2005 |