{"year":"2023","_id":"43246","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"The biexciton-exciton emission cascade commonly used in quantum-dot systems to generate polarization entanglement yields photons with intrinsically limited indistinguishability. In the present work we focus on the generation of pairs of photons with high degrees of polarization entanglement and simultaneously high indistinguishibility. We achieve this goal by selectively reducing the biexciton lifetime with an optical resonator. We demonstrate that a suitably tailored circular Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement of biexciton emission paired with spectrally broad photon extraction and two-fold degenerate optical modes. Our in-depth theoretical study combines (i) the optimization of realistic photonic structures solving Maxwell's equations from which model parameters are extracted as input for (ii) microscopic simulations of quantum-dot cavity excitation dynamics with full access to photon properties. We report non-trivial dependencies on system parameters and use the predictive power of our combined theoretical approach to determine the optimal range of Purcell enhancement that maximizes indistinguishability and entanglement to near unity values in the telecom C-band at $1550\\,\\mathrm{nm}$."}],"citation":{"bibtex":"@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }","apa":"Bauch, D., Siebert, D., Jöns, K., Förstner, J., &#38; Schumacher, S. (2023). <i>On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs</i>.","ama":"Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs. Published online 2023.","short":"D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, (2023).","ieee":"D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs.” 2023.","chicago":"Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher. “On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using Tailored Cavity Designs,” 2023.","mla":"Bauch, David, et al. <i>On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using Tailored Cavity Designs</i>. 2023."},"date_created":"2023-03-31T13:22:05Z","status":"public","author":[{"full_name":"Bauch, David","last_name":"Bauch","first_name":"David"},{"full_name":"Siebert, Dustin","last_name":"Siebert","first_name":"Dustin"},{"last_name":"Jöns","first_name":"Klaus","id":"85353","full_name":"Jöns, Klaus"},{"orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","first_name":"Jens","last_name":"Förstner","id":"158"},{"orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271","first_name":"Stefan","last_name":"Schumacher"}],"title":"On-demand indistinguishable and entangled photons at telecom frequencies using tailored cavity designs","date_updated":"2023-12-21T10:41:17Z","type":"preprint","user_id":"16199","related_material":{"record":[{"id":"48599","relation":"later_version","status":"public"}]},"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"grant_number":"231447078","name":"TRR 142 - C09: TRR 142 - Subproject C09","_id":"173"},{"name":"TRR 142 - B06: TRR 142 - Subproject B06","grant_number":"231447078","_id":"167"},{"_id":"53","grant_number":"231447078","name":"TRR 142: TRR 142"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"name":"TRR 142 - C: TRR 142 - Project Area C","_id":"56"}],"oa":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/pdf/2303.13871.pdf"}],"keyword":["tet_topic_phc","tet_topic_qd"],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"},{"_id":"15"},{"_id":"35"},{"_id":"170"},{"_id":"297"}]}