Regensburg 2022 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 19: Materials and Devices for Quantum Technology 1
HL 19.2: Talk
Wednesday, September 7, 2022, 10:00–10:15, H34
Optimizing quantum teleportation with imperfect quantum dot sources — •Francesco Salusti1, Francesco Basso Basset2, Lucas Schweickert3, Michele B Rota2, Davide Tedeschi2, Saimon Filipe Covre da Silva4, Emanuele Roccia2, Val Zwiller3, Klaus D Jöns1, Armando Rastelli4, and Rinaldo Trotta2 — 1Department of Physics, Paderborn University, Paderborn, Germany — 2Department of Physics, Sapienza University of Rome, Rome, Italy — 3Department of Applied Physics, Royal Institute of Technology, Stockholm, Sweden — 4Institute of Semiconductor and Solid State Physics, Johannes Kepler University, Linz, Austria
All-optical quantum communication protocols such as teleportation and entanglement swapping require the generation of entangled photons. Quantum dots, with their on-demand generation and low unwanted multi-photon emission are excellent candidates to realize these protocols. However, finding quantum dots with near-perfect quantum optical properties remains challenging. Instead, in our work we demonstrate that it is possible to improve a quantum teleportation protocol by acting exclusively on the experimental setup. [1] Despite selecting a source with non-ideal figures of merit, we have been able to enhance the overall protocol fidelity. The obtained values agree with our developed model, taking the quantum dot properties into account. Our model provides predictive power for future source optimization. Reference: [1] F. Basso Basset, F. Salusti et al., npj Quantum Information 7, 7 (2021)