Premium
Theory of Exciton Coherence and Decoherence in Semiconductor Quantum Dots
Author(s) -
Takagahara T.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200211)234:1<115::aid-pssb115>3.0.co;2-6
Subject(s) - dephasing , physics , rabi cycle , exciton , quantum decoherence , quantum dot , coherence (philosophical gambling strategy) , quantum mechanics , semiconductor , quantum beats , condensed matter physics , quantum
We discuss the Rabi splitting and Rabi oscillation of excitons in semiconductor quantum dots and clarify the fundamental physics and new characteristic features. These coherent optical phenomena are not restricted to semiconductor quantum dots and the predicted features would be observed also in atoms and molecules. The universality of the phenomena ensures the possibility for application to quantum state control and quantum information processing by optical means. We discuss briefly the mechanisms of exciton dephasing in semiconductor quantum dots in conjunction with recent observations of the lifetime‐limited exciton dephasing time and show that the pure dephasing rate is very small but is not vanishing even at zero Kelvin.