Semiconductor cavity QED: Bandgap induced by vacuum fluctuations
arXiv:1403.7911 · doi:10.1103/PhysRevA.89.062115
Abstract
We consider theoretically a semiconductor nanostructure embedded in one-dimensional microcavity and study the modification of its electron energy spectrum by the vacuum fluctuations of the electromagnetic field. To solve the problem, a non-perturbative diagrammatic approach based on the Green's function formalism is developed. It is shown that the interaction of the system with the vacuum fluctuations of the optical cavity opens gaps within the valence band of the semiconductor. The approach is verified for the case of large photon occupation numbers, proving the validity of the model by comparing to previous studies of the semiconductor system excited by a classical electromagnetic field. The developed theory is of general character and allows for unification of quantum and classical descriptions of the strong light-matter interaction in semiconductor structures.
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Cited by in corpus (5)
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- Cavity-Vacuum-Induced Chiral Spin Liquids in Kagome Lattices: Tuning and Probing Topological Quantum Phases via Cavity Quantum Electrodynamics
- Band gaps induced by vacuum photons in closed semiconductor cavities
- Angular Momentum-Dependent Spectral Shift in Chiral Vacuum Cavities