Collective resonances in ${\chi }^{(3)}$; a QED study

Abstract

We calculate the third order susceptibility ${\chi }^{(3)}$ of a pair of 2 level atoms which interact via the exchange of photons. QED corrections to second order in coupling to vacuum field modes yield collective two photon absorption resonances which can be observed in transmission spectroscopy of shaped broadband pulses. While some collective effects can be obtained by introducing an effective interatomic coupling using a quantum master equation, the predicted signals contain clear features that are missed by that level of theory and require a full diagrammatic QED treatment.

References in corpus (4)

• Electrodynamics of Correlated Electron Materials
• Radiation Generated by Charge Migration Following Ionization
• Manipulation of two-photon fluorescence spectra of chromophore aggregates with entangled photons: A simulation study
• Nonlinear light scattering in molecules triggered by an impulsive X-ray Raman process

Cited by in corpus (3)

• Nonlinear optical signals and spectroscopy with quantum light
• Nonlinear fluctuations and dissipation in matter revealed by quantum light
• Probing weak dipole-dipole interaction using phase-modulated non-linear spectroscopy