2D Fourier Transform Spectroscopy of exciton-polaritons and their interactions

Abstract

We investigate polariton-polariton interactions in a semiconductor microcavity through two-dimensional Fourier transform (2DFT) spectroscopy. We observe, in addition to the lower-lower and the upper-upper polariton self-interaction, a lower-upper cross-interaction. This appears as separated peaks in the on-diagonal and off-diagonal part of 2DFT spectra. Moreover, we elucidate the role of the polariton dispersion through a fine structure in the 2DFT spectrum. Simulations, based on lower-upper polariton basis Gross-Pitaevskii equations including both self and cross-interactions, result in a 2DFT spectra in qualitative agreement with experiments.

References in corpus (4)

• Quantum fluids of light
• Observation of Superfluidity of Polaritons in Semiconductor Microcavities
• Polaritonic Feshbach Resonance
• Polariton-polariton scattering: exact results through a novel approach

Cited by in corpus (11)

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• The Excitation Ladder of Cavity Polaritons
• Generalization of the Tavis-Cummings model for multi-level anharmonic systems: insights on the second excitation manifold
• Cross Feshbach resonance
• Dephasing effects on coherent exciton-polaritons and the breaking of the strong coupling regime
• Nonlinear semiclassical spectroscopy of ultrafast molecular polariton dynamics
• Coherent Contributions to Population Dynamics in a Semiconductor Microcavity
• The role of dark polariton states for electronic strong coupling in molecules
• Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime
• Inverse-phase Rabi oscillations in semiconductor microcavities
• Revealing Hidden Vibration Polariton Interactions by 2D IR Spectroscopy