A new signature for strong light-matter coupling using spectroscopic ellipsometry
arXiv:2004.13434 · doi:10.1021/acs.nanolett.0c01963
Abstract
Light-matter interactions can occur when an ensemble of molecular resonators is placed in a confined electromagnetic field. In the strong coupling regime the rapid exchange of energy between the molecules and the electromagnetic field results in the emergence of hybrid light-matter states called polaritons. Multiple criteria exist to define the strong coupling regime, usually by comparing the splitting of the polariton bands with the linewidths of the uncoupled modes. Here we highlight the limitations of these criteria and study strong coupling using spectroscopic ellipsometry, a commonly used optical characterisation technique. We identify a new signature of strong coupling in ellipsometric phase spectra. Combining ellipsometric amplitude and phase spectra yields a distinct topological feature that we suggest could serve as a new criterion for strong coupling. Our results introduce the idea of ellipsometric topology and could provide further insight into the transition from the weak to strong coupling regime.
arXiv comment20 pages, 10 figures
References in corpus (14)
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Strong coupling between surface plasmon polaritons and emitters
- Quantum Plasmonics
- Ultrastrong coupling between light and matter
- Ultrastrong coupling regimes of light-matter interaction
- Quantum vacuum properties of the intersubband cavity polariton field
- Superconducting qubit-oscillator circuit beyond the ultrastrong-coupling regime
- Deep Strong Coupling Regime of the Jaynes-Cummings model
- Coherent coupling of molecular resonators with a micro-cavity mode
- Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
- Singular-phase nanooptics: towards label-free single molecule detection
- Ultrafast Quantum Gates in Circuit QED
- Virtual photons in the ground state of a dissipative system
- Long-lasting Quantum Memories: Extending the Coherence Time of Superconducting Artificial Atoms in the Ultrastrong-Coupling Regime
Cited by in corpus (6)
- Molecular polaritonics: Chemical Dynamics under strong Light-Matter Coupling
- Non-Hermitian engineering of terahertz light using exceptional points in electrically tuneable collective light-matter interactions
- Non-polaritonic effects in cavity-modified photochemistry
- All-optical control of phase singularities using strong light-matter coupling
- Optomechanical Effects in Nanocavity-enhanced Resonant Raman Scattering of a Single Molecule
- Hybridization of terahertz phonons and magnons in disparate and spatially-separated material specimens