Dipolar polaritons in microcavity-embedded coupled quantum wells in electric and magnetic fields

TL;DR

This paper models dipolar polaritons in coupled quantum wells within microcavities, showing how electric and magnetic fields influence their properties, including strong coupling and large dipole moments.

Contribution

It provides a detailed theoretical analysis of how electric and magnetic fields affect the formation and characteristics of dipolar polaritons in coupled quantum wells.

Findings

Magnetic field can compensate for electric field effects on light-matter coupling.

Polaritons can exhibit large static dipole moments while maintaining strong coupling.

Electric and magnetic fields significantly influence polariton properties.

Abstract

We present a precise calculation of spatially-indirect exciton states in semiconductor coupled quantum wells and polaritons formed from their coupling to the optical mode of a microcavity. We include the presence of electric and magnetic fields applied perpendicular to the quantum well plane. Our model predicts the existence of polaritons which are in the strong coupling regime and at the same time possess a large static dipole moment. We demonstrate, in particular, that a magnetic field can compensate for the reduction in light-matter coupling that occurs when an electric field impresses a dipole moment on the polariton.