Possibility of observation quantum beat coherent exciton states with time-resolved photoemission

We develop a theoretical study to evaluate the dynamic of the time-resolved photoemission spectrum arising from the dissociation of exciton steady-states 1s, 2s in a monolayer transition metal dichlacogenides. We discuss the dielectric environment effect on the exciton binding energies. Quantum beat signatures in photoemission intensity demonstrate coherent coupling between 1s and 2s excitons. The beating contribution due to excitonic coherence is also discussed. The periodic oscillations arising from coherent superposition states and quantum beats enable exploration of novel coherent phenomena. Published under an exclusive license by AIP Publishing.

Automated summary

We develop a theoretical study to evaluate the dynamic photoemission spectrum of exciton steady-states in monolayer transition metal dichlacogenides. The effect of dielectric environment on exciton binding energies is discussed. Coherent coupling between 1s and 2s excitons and quantum beat phenomena are observed.