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HL: Fachverband Halbleiterphysik
HL 57: Quantum Dots and Wires: Optics II
HL 57.11: Vortrag
Freitag, 21. März 2025, 12:15–12:30, H13
Quantum Communication Protocols Using Polarization-Entangled Photon Emitters — Michele Rota1, Francesco Basso Basset1, •Francesco Salusti2, Alessandro Laneve1, Mattia Beccaceci1, Giuseppe Ronco1, Nicolas Claro Rodriguez2, Thobias Krieger3, Quirin Buchinger4, Saimon Filipe Covre Da Silva3, Sandra Stroj5, Sven Höfling4, Tobias Huber-Loyola4, Armando Rastelli3, Klaus Jöns2, and Rinaldo Trotta1 — 1Department of Physics, Sapienza University of Rome, 00185 Rome, Italy — 2PhoQS, CeOPP and Department of Physics, Paderborn University, 33098 Paderborn, Germany — 3Institute of Semiconductor and Solid State Physics, JKU University, 4040 Linz, Austria — 4Julius-Maximilians-Universität Würzburg, Physikalisches Institut, 97074 Würzburg, Germany — 5Forschungszentrum Mikrotechnik, FH Vorarlberg, 6850 Dornbirn, Austria
We demonstrate entanglement swapping using [1] a quantum dot in a novel cavity with piezoelectric actuators [2]. We use these entan- gled photons after the swapping operation for quantum key distribu- tion with a modified Ekert91 protocol [3], highlighting temporal post- selection*s impact on photon indistinguishability and protocol metrics. References: [1] J.-W. Pan, et al., Phys. Rev. Lett. 80, 3891 (1998) [2] M. B. Rota, et al., eLight 4, 13 (2024), ISSN 2662-8643 [3] F. B. Basset, et al., Science Advances 7, eabe6379 (2021)
Keywords: Quantum dots; Quantum communication; Entanglement swapping; Quantum Key Distribution; Cavity