7 papers
Propagation processing of short pulses in Rydberg exciton medium under blockade conditions
Sylwia ZieliÅska-RaczyÅska, David Ziemkiewicz
Propagation of short pulses through CuO crystal containing Rydberg excitons is studied with the use of density matrix formalism and FDTD method. Saturation effects related to t…
Emission Dynamics of Rydberg Excitons in : Distinguishing Second Harmonic Generation from Secondary Emission
Kerwan Morin, Poulab Chakrabarti, Delphine Lagarde +5
Rydberg excitons in simultaneously give rise to two very different optical responses under resonant two-photon excitation: a coherent second-harmonic signal mediat…
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…