Quantum condensation from a tailored exciton population in a microcavity

TL;DR

This paper proposes an experiment to generate and observe a quantum condensate of excitons and photons in a microcavity by tailoring exciton populations through a generalized adiabatic rapid passage, modeled with a generalized Dicke model.

Contribution

It introduces a novel method to create energy-dependent exciton populations leading to quantum condensation in a microcavity, combining tailored excitation and a dynamical BCS-like instability.

Findings

Tailored excitation pulses can produce exciton populations that evolve into a quantum condensate.

The process is modeled using a generalized Dicke model.

The condensation mechanism is analogous to a dynamical BCS instability.

Abstract

An experiment is proposed, on the coherent quantum dynamics of a semiconductor microcavity containing quantum dots. Modeling the experiment using a generalized Dicke model, we show that a tailored excitation pulse can create an energy-dependent population of excitons, which subsequently evolves to a quantum condensate of excitons and photons. The population is created by a generalization of adiabatic rapid passage, and then condenses due to a dynamical analog of the BCS instability.