The Optical Signatures of Stochastic Processes in Many-Body Exciton Scattering
arXiv:2207.02128 · doi:10.1146/annurev-physchem-102822-100922
Abstract
We review our recent quantum stochastic model for spectroscopic lineshapes in the presence of a co-evolving and non-stationary background population of excitations. Starting from a field theory description for interacting bosonic excitons, we derive a reduced model whereby optical excitons are coupled to an incoherent background via scattering as mediated by their screened Coulomb coupling. The Heisenberg equations of motion for the optical excitons are then driven by an auxiliary stochastic population variable, which we take to be the solution of an Ornstein-Uhlenbeck process. Here we discuss an overview of the theoretical techniques we have developed as applied to predicting coherent non-linear spectroscopic signals. We show how direct (Coulomb) and exchange coupling to the bath give rise to distinct spectral signatures and discuss mathematical limits on inverting spectral signatures to extract the background density of states.
arXiv commentarXiv admin note: substantial text overlap with arXiv:2008.08211
References in corpus (14)
- Intrinsic Exciton Linewidth in Monolayer Transition Metal Dichalcogenides
- Phonon coherences reveal the polaronic character of excitons in two-dimensional lead-halide perovskites
- Perspective: Exciton polarons in two-dimensional hybrid metal-halide perovskites
- Exciton-polaron spectral structures in two dimensional hybrid lead-halide perovskites
- Stable biexcitons in two-dimensional metal-halide perovskites with strong dynamic lattice disorder
- Many-body two-quantum coherences in semiconductor nanostructures
- Exciton-Scattering-Induced Dephasing in Two-Dimensional Semiconductors
- Coherent Excitonic Coupling in an Asymmetric Double InGaAs Quantum Well Arises from Many-Body Effects
- Electron-phonon couplings inherent in polarons drive exciton dynamics in two-dimensional metal-halide perovskites
- Enhanced screening and spectral diversity in many-body elastic scattering of excitons in two-dimensional hybrid metal-halide perovskites
- Stochastic scattering theory for excitation induced dephasing: Time-dependent nonlinear coherent exciton lineshapes
- Photon entanglement entropy as a probe of many-body correlations and fluctuations
- Homogeneous optical linewidths in hybrid Ruddlesden-Popper metal halides can only be measured using nonlinear spectroscopy
- Stochastic scattering theory for excitation induced dephasing: Comparison to the Anderson-Kubo lineshape