Spectroscopic Signatures of Quantum Many-Body Correlations in Polariton Microcavities
Spectroscopic Signatures of Quantum Many-Body Correlations in Polariton Microcavities
We theoretically investigate the many-body states of exciton polaritons that can be observed by pump-probe spectroscopy in high-$Q$ inorganic microcavities. Here, a weak-probe ``spin-down'' polariton is introduced into a coherent state of ``spin-up'' polaritons created by a strong pump. We show that the $\ensuremath{\downarrow}$ impurities become dressed by excitations of …