Many-body physics of intersubband polaritons

Luc Nguyen-Thê (1) , Simone de Liberato (1, 2) , Motoaki Bamba (1, 3) , Cristiano Ciuti (1)

1 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
2 School of Physics and Astronomy [Southampton]
3 Department of Physics [Osaka]

Intersubband polaritons are light-matter excitations originating from the strong coupling between an intersubband quantum well electronic transition and a microcavity photon mode. In this paper we study how the Coulomb electron-electron interaction and the Pauli saturation of the electronic transitions affect the physics of intersubband polaritons. We develop a microscopic many-body theory for the physics of such composite bosonic excitations in a microcavity-embedded two-dimensional electron gas. As a first application, we calculate the modification of the depolarization shifts and the efficiency of intersubband polariton-polariton scattering processes.

Domaines: Autre [cond-mat.other]

Luc Nguyen-Thê, Simone de Liberato, Motoaki Bamba, Cristiano Ciuti. Many-body physics of intersubband polaritons. 2012. ⟨hal-00755550⟩