Microscopic theory of cavity-confined monolayer semiconductors: Polariton-induced valley relaxation and the prospect of enhancing and controlling valley pseudospin by chiral strong coupling

Theory of Apparent Circular Dichroism Reveals the Origin of Inverted and Noninverted Chiroptical Response under Sample Flipping

“…Another complication for quantum transduction is that CD signals commonly are independent of the light propagation direction, meaning that oppositely traveling photons are absorbed with a preference for the same circular polarization (right- or left-handed). This complicates an incorporation in setups involving optical mirrors and/or two-dimensional topological materials, for which chiral states involved in oppositely traveling photons are each other’s enantiomer …”

“…This complicates an incorporation in setups involving optical mirrors and/or two-dimensional topological materials, for which chiral states involved in oppositely traveling photons are each other's enantiomer. 19 In recent years, Di Bari and co-workers have reported on several organic thin films exhibiting strong CD signals with a marked dependence on the light propagation direction. 20 Specifically, thin films composed of achiral oligothiophenes and phenylene bis-thiophenylpropynone decorated with chiral side-chains were studied, showing macroscopic g factors of up to ∼0.2, in some cases similarly high g factors in photoluminescence, and an almost complete inversion of the CD spectrum upon flipping the sample.…”

Entangled biphoton enhanced double quantum coherence signal as a probe for cavity polariton correlations in presence of phonon induced dephasing

“…In a separate line of development, there have been a series of studies that have demonstrated the effective role of external electromagnetic cavities in manipulating material excitations. These studies range from the control of electronic excitations [7][8][9][10][11][12][13][14][15][16], vibrational modes [17,18], collective mode responses [19,20] to the cavity mode-assisted modulation of dynamical resonances [21][22][23][24][25]. Cavity mode interacting resonantly with narrow-band of excitons and off-resonantly with the rest may modulate the excitation dispersal by tuning the delocalization properties and influence the dephasing properties via the spectral weight modulation [26][27][28].…”

Entangled Biphoton Enhanced Double Quantum Coherence Signal as a Probe for Cavity Polariton Correlations in Presence of Phonon Induced Dephasing

“…In a separate line of development, there have been a series of studies that have demonstrated the effective role of external electromagnetic cavities in manipulating material excitations. These studies range from the control of electronic excitations [7][8][9][10][11][12][13][14][15][16], vibrational modes [17,18], collective mode responses [19,20] to the cavity mode-assisted modulation of dynamical resonances [21][22][23][24][25]. Cavity mode interacting resonantly with narrow-band of excitons and off-resonantly with the rest may modulate the excitation dispersal by tuning the delocalization properties and influence the dephasing properties via the spectral weight modulation [26][27][28].…”