On-demand ideal photon pair generation for entanglement swapping at telecom frequencies (C09*)

• Subject Area: Experimental Condensed Matter Physics ; Theoretical Condensed Matter Physics
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 231447078

The goal of this project is the demonstration of on-demand ideal photon pair generation for entanglement swapping at telecom frequencies employing quantum dots embedded in circular Bragg grating cavities. The InAs quantum dots in an InxGayAl1-x-yAs-matrix are grown by molecular beam epitaxy and the circular Bragg grating cavity will allow to tune the lifetime of the exciton and the biexciton as well as to enhance the emission efficiency. The experiments are supported and complemented by theoretical calculations to optimize device design and interpret results.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 142: Tailored nonlinear photonics: From fundamental concepts to functional structures
• Applicant Institution: Universität Paderborn
• Project Heads: Professor Dr. Klaus Jöns; Professor Dr. Dirk Reuter; Professor Dr. Stefan Schumacher