Coherent Population Trapping of Electron Spins in a Semiconductor
Autor: | Fu, Kai-Mei C., Santori, Charles, Stanley, Colin, Holland, M. C., Yamamoto, Yoshihisa |
---|---|
Rok vydání: | 2005 |
Předmět: | |
DOI: | 10.48550/arxiv.cond-mat/0504012 |
Popis: | In high-purity n-type GaAs under strong magnetic field, we are able to isolate a lambda system composed of two Zeeman states of neutral-donor bound electrons and the lowest Zeeman state of bound excitons. When the two-photon detuning of this system is zero, we observe a pronounced dip in the excited-state photoluminescence indicating the creation of the coherent population-trapped state. Our data are consistent with a steady-state three-level density-matrix model. The observation of coherent population trapping in GaAs indicates that this and similar semiconductor systems could be used for various EIT-type experiments. Comment: 5 pages, 4 figures replaced 6/25/2007 with PRL version |
Databáze: | OpenAIRE |
Externí odkaz: |