Abstract
Exciton-polariton dispersion and long-range exchange energy in quantum wires are obtained by a Green’s-function approach. The quasi-one-dimensional generalization of the longitudinal-transverse splitting (long-range exchange interaction) is shown to be a consequence of the completeness relation satisfied by the set of optical modes. Exchange splittings of 0.3 meV are predicted for state-of-the-art GaAs/As quantum wires, while polariton splittings are expected to be smaller. The effects on the polariton dispersion and long-range exchange splittings of embedding the quantum wire in an optical microcavity are discussed.
- Received 20 January 1993
DOI:https://doi.org/10.1103/PhysRevB.48.2535
©1993 American Physical Society