Optically induced hybrid Bose-Fermi system in quantum wells with different charge carriers

TL;DR

This paper theoretically demonstrates that circularly polarized light can induce a stable hybrid Bose-Fermi system in quantum wells, featuring composite bosons formed from electrons with different effective masses, revealing new light-induced electron pairing phenomena.

Contribution

It introduces a novel theoretical framework for optically creating and analyzing hybrid Bose-Fermi systems with mixed charge carriers in quantum wells.

Findings

Stable composite bosons formed from different charge carriers.

Analysis of elementary excitations in the hybrid system.

Discussion of light-induced electron pairing manifestations.

Abstract

It is demonstrated theoretically that the circularly polarized irradiation of two-dimensional conducting systems can produce the composite bosons consisting of two electrons with different effective masses (different charge carriers), which are stable due to the Fermi sea of conduction electrons. As a result, the optically induced mixture of paired electrons and normal conduction electrons (the hybrid Bose-Fermi system) appears. Elementary excitations in such a hybrid system are analyzed and possible manifestations of the light-induced electron pairing are discussed for semiconductor quantum wells.