Heat pumping with optically driven excitons

Abstract

We present a theoretical study showing that an optically driven excitonic two-level system in a solid state environment acts as a heat pump by means of repeated phonon emission or absorption events. We derive a master equation for the combined phonon bath and two-level system dynamics and analyze the direction and rate of energy transfer as a function of the externally accessible driving parameters. We discover that if the driving laser is detuned from the exciton transition, cooling the phonon environment becomes possible.

References in corpus (4)

• Phonon-assisted transitions from quantum dot excitons to cavity photons
• Dephasing of quantum dot exciton polaritons in electrically tunable nanocavities
• Population inversion of driven two-level systems in a structureless bath
• High fidelity all-optical control of quantum dot spins: detailed study of the adiabatic approach

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• Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots
• Time-resolved pump-probe signals of a continuously driven quantum dot affected by phonons
• Collective Quantum Dot Inversion and Amplification of Photon and Phonon Waves
• Optical drive of macroscopic mechanical motion by a single two-level system
• Overcoming phonon-induced dephasing for indistinguishable photon sources
• Principles underlying efficient exciton transport unveiled by information-geometric analysis
• Overcoming temperature limits in the optical cooling of solids using light-dressed states
• Quantum control of solid-state qubits for thermodynamic applications