Accession Number:

ADA254719

Title:

Photoinduced Electron Transfer Counter to the Bias Field in Coupled Quantum Wells

Descriptive Note:

Interim rept.,

Corporate Author:

WASHINGTON STATE UNIV PULLMAN

Report Date:

1992-08-01

Pagination or Media Count:

8.0

Abstract:

Optical excitation of electrons in an asymmetric double quantum well is theoretically examined. The well is biased to align the excited levels and permit resonant electron tunneling. Emphasis is made on the photoinduced transfer of electrons counter to the bias electric field force. A density- matrix approach is developed to describe optical excitations in the presence of an arbitrary dephasing. The excitation profiles obtained for cases of different dephasing reveal the full range of tunneling coupling between the wells from completely coherent to incoherent stepwise.

Subject Categories:

  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE