4 papers · 1 filter
Plasmon-enhanced quadrupole transitions of Rydberg excitons in Cu2O
David Ziemkiewicz, Sylwia ZieliÅska-RaczyÅska
A mechanism for amplification of weak quadrupole transitions of Rydberg excitons in CuO by a plasmonic nanostructure is investigated. The theoretical description of exciton-pla…
Quantum interference of Rydberg excitons in Cu0: quantum beats
Sylwia ZieliÅska-RaczyÅska, David Ziemkiewicz
A density matrix formalism is employed to calculate the emission of multi-level excitonic system, highlighting picosecond-scale dynamics and coherent effects such as quantum beats.…
Optical properties of Rydberg excitons in CuO based superlattices
David Ziemkiewicz, Gerard Czajkowski, Sylwia ZieliÅska-RaczyÅska
Combining the microscopic calculation of superlattice minibands and the macroscopic real density matrix approach one can obtain electric susceptibilities of the superlattice system…
Optical to microwave frequency conversion with Rydberg excitons
David Ziemkiewicz, Sylwia ZieliÅska-RaczyÅska
A novel, copper-based plasmonic system is presented to provide optical to microwave photon conversion. The process uses highly excited levels in Cu2O Rydberg excitons and takes adv…