Optimal condition to probe strong coupling of two-dimensional excitons and zero-dimensional cavity modes
arXiv:2107.00078 · doi:10.1103/PhysRevB.104.235436
Abstract
The light-matter interaction associated with a two-dimensional (2D) excitonic transition coupled to a zero-dimensional (0D) photonic cavity is fundamentally different from coupling localized excitations in quantum dots or color centers, which have negligible spatial extent compared to the cavity-confined mode profile. By calculating the radiation-matter coupling of the exciton transition of a surface deposited 2D material and a 0D photonic crystal nanobeam mode, we found that there is an optimal spatial extent of the monolayer material that maximizes such an interaction strength due to the competition between minimizing the excitonic envelope function area and maximizing the total integrated field. This is counter to the intuition from the Dicke model, where the oscillator strength is expected to monotonically grow with the number of oscillators, which correlates to the monolayer area assuming the excitonic wavefunction is delocalized over the entire quantum well. We also found that at near zero exciton-cavity detuning, the direct transmission efficiency of a waveguide-integrated cavity can be severely suppressed, which suggests performing experiments by using a side-coupled cavity to get better performances.
References in corpus (14)
- Quantum fluids of light
- Quantum nature of a strongly-coupled single quantum dot-cavity system
- Strong light-matter coupling in two-dimensional atomic crystals
- Exciton-polariton condensates
- Attojoule Optoelectronics for Low-Energy Information Processing and Communications: a Tutorial Review
- Single photons from coupled quantum modes
- Theory of single-photon transport in a single-mode waveguide coupled to a cavity containing a two-level atom
- Fiber Fabry-Perot cavity with high finesse
- Input-Output Formalism For Few-Photon Transport in One-Dimensional Nanophotonic Waveguides Coupled to a Qubit
- The quantum optical Josephson interferometer
- A small mode volume tunable microcavity: development and characterization
- Metasurface Integrated Monolayer Exciton Polariton
- Quantum theory of exciton-photon coupling in photonic crystal slabs with embedded quantum wells
- Dispersive coupling between MoSe2 and a zero-dimensional integrated nanocavity