Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Virtual-Real Quantum Interference in a Semiconductor System

Published

Author(s)

H Ahn, S B. Choe, D S. Kim, J M. Shacklette, Y S. Lim

Abstract

Probabability amplitude in the upper state can be induced by the off-resonant, virtual excitations as well as by the resonant, real excitations. Bytwo-color pulse shaping, we simultaneously create virtual and real amplitudes for excitons in GaAs quantum wells, and monitor population andamplitude by pump-probe and four-wave mixing spectroscopies. Population modulation in time-domain results from the interference betweenthe virtual and real amplitudes, and the modulation depth reveals the relative contributions of these two amplitudes. The fact that virtual and real amplitudes have a phase difference of 90 degrees is demonstrated for the first time in time-domain.
Citation
Physical Review Letters

Keywords

exciton, semiconductors, ultrafast

Citation

Ahn, H. , Choe, S. , Kim, D. , Shacklette, J. and Lim, Y. (2008), Virtual-Real Quantum Interference in a Semiconductor System, Physical Review Letters (Accessed May 20, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 16, 2008