SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 34: Quantum Communication (joint session QI/Q)
Q 34.6: Vortrag
Mittwoch, 8. März 2023, 16:00–16:15, B305
A theoretical and experimental analysis of the single-photon advantage in quantum coin flipping — •Fenja Drauschke1,2, Daniel A. Vajner1, Tobias Heindel1, and Anna Pappa2 — 1Institut für Festkörperphysik, TU Berlin — 2Institut für Softwaretechnik und Theoretische Informatik, TU Berlin
Quantum coin flipping is a prominent cryptographic primitive within the framework of non-collaborative models, where two or more distrustful parties want to perform a fair coin flip. The parties are separated by a distance and wish to agree on a random bit. Quantum coin flipping has raised much interest recently, as it has various applications and holds enormous potential for improving the security of secure communications. At the same time, the use of single-photon sources for quantum communication setups is also attracting a lot of attention as it promises further security advantages compared to the usage of weak coherent laser pulses. In this work, we investigate the advantage of using single-photon sources compared to weak coherent pulses for different quantum communication setups of coin flipping in a theoretical, as well as experimental approach.