Theory of quantum coherence phenomena in semiconductor quantum dots.
- Kaiserslautern University, Kaiserslautern, Germany
This paper explores quantum-coherence phenomena in a semiconductor quantum-dot structure. The calculations predict the occurrence of inversionless gain, electromagnetically induced transparency, and refractive-index enhancement in the transient regime for dephasing rates typical under room temperature and high excitation conditions. They also indicate deviations from atomic systems because of strong many-body effects. Specifically, Coulomb interaction involving states of the quantum dots and the continuum belonging to the surrounding quantum well leads to collision-induced population redistribution and many-body energy and field renormalizations that modify the magnitude, spectral shape, and time dependence of quantum-coherence effects.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 990031
- Report Number(s):
- SAND2003-2365J; PLRAAN; TRN: US201020%%98
- Journal Information:
- Proposed for publication in Physical Review A., Vol. 68, Issue 5; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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