Quantum theory of electron tunneling into intersubband cavity polariton states

Abstract

Through a non-perturbative quantum theory, we investigate how the quasi-electron excitations of a two-dimensional electron gas are modified by strong coupling to the vacuum field of a microcavity. We show that the electronic dressed states originate from a Fano-like coupling between the bare electron states and the continuum of intersubband cavity polariton excitations. In particular, we calculate the electron spectral function modified by light-matter interactions and its impact on the electronic injection of intersubband cavity polaritons. The domain of validity of the present theoretical results is critically discussed. We show that resonant electron tunneling from a narrow-band injector can selectively excite superradiant states and produce efficient intersubband polariton electroluminescence.

References in corpus (4)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Input-output theory of cavities in the ultra-strong coupling regime: the case of a time-independent vacuum Rabi frequency
• Quantum model of microcavity intersubband electroluminescent devices

Cited by in corpus (8)

• Intersubband Polaritons in the Electrical Dipole Gauge
• Ultra-Strong Light-Matter Coupling in Deeply Subwavelength THz LC resonators
• Optical dressing of the electronic response of two-dimensional semiconductors in quantum and classical descriptions of cavity electrodynamics
• Quantum electron transport controlled by cavity vacuum fields
• Intersubband electroluminescent devices operating in the strong coupling regime
• Resonant tunneling diodes in semiconductor microcavities: modeling polaritonic features in the THz displacement current
• An effective density matrix approach for intersubband plasmons coupled to a cavity field: electrical extraction/injection of intersubband polaritons
• Direct polariton-to-electron tunneling in quantum cascade detectors operating in the strong light-matter coupling regime