Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 7: Quantum Communication I
Q 7.5: Vortrag
Montag, 11. März 2024, 12:00–12:15, HS 3219
Boosted quantum teleportation — •Simone Evaldo D'Aurelio1,2, Matthias Bayerbach1,2, and Stefanie Barz1,2 — 1Institute for Functional Matter and Quantum Technologies, Stuttgart, Germany — 2Center for Integrated Quantum Science and Technology (IQST), Stuttgart, Germany
Quantum teleportation serves as a fundamental pillar across various quantum applications, spanning from quantum communication to quantum computation. Although photons show great promise in these endeavors, the application of linear optics imposes a limitation, capping the success probability of quantum teleportation at 50%. This limitation arises from the fact that a key component, the Bell-state measurement (BSM), faces constraints in success probability when employing linear optics. Here, we demonstrate an enhanced form of quantum teleportation, so-called boosted teleportation, using linear optics only. Introducing an additional ancilla state in the BSM boosts the success probability of the BSM and thus also of the overall quantum teleportation process. The use of extra photons does introduce a more intricate detection pattern compared to the non-boosted scenario. This complexity reveals more information, leading to a higher success probability. Our results show fidelities between the teleported states and the expected outcomes that surpass the maximum fidelity achievable through classical means. This experiment highlights the potential for advanced quantum teleportation protocols, particularly in the realm of photonic quantum computing.
Keywords: quantum teleportation; bell-state measurement