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Coherent control of intersubband optical bistability in quantum wells

Appl. Phys. Lett. 84, 3984 (2004); doi:10.1063/1.1751611

Published 3 May 2004

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H. O. Wijewardane and C. A. Ullrich
Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65409
We present a study of the nonlinear intersubband (ISB) response of conduction electrons in a GaAs/Al0.3Ga0.7As quantum well to strong terahertz (THz) radiation, using a density-matrix approach combined with time-dependent density-functional theory. We demonstrate coherent control of ISB optical bistability, using THz control pulses to induce picosecond switching between the bistable states. The switching speed is determined by the ISB relaxation and decoherence times, T1 and T2. ©2004 American Institute of Physics.
History: Received 29 December 2003; accepted 24 March 2004; published 3 May 2004
Permalink: http://link.aip.org/link/?APPLAB/84/3984/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.67.De
    Optical properties of quantum wells
  • 42.65.Pc
    Optical bistability, multistability, and switching, including local field effects
  • YEAR: 2004

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ISSN:
0003-6951 (print)   1077-3118 (online)
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