Abstract
Absorption cancellation via tunneling induced Fano interference in semiconductor quantum wells is studied in the presence of the Coulomb interaction between electrons. For a small subband dispersion, gain or loss is determined by single-electron Fano interference. For a large subband dispersion, collective excitations dominate the absorption spectrum and are crucial for the observability of tunneling induced transparency, which exists in spite of subband dispersion. Pumping destroys collective excitations; therefore gain without inversion is possible only for small subband dispersion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
