NEVES Simon
责任导师 : Eleni DIAMANTI
Photonic Resources for the Implementation of Quantum Network Protocols
In this thesis, we developed a source of photonic quantum states which we use to demonstrate important cryptographic primitives, namely quantum weak coin flipping, and the certified transmission of quantum information through an untrusted and lossy quantum channel. Our source produces photon-pairs at telecom wavelengths, with high heralding efficiency and closeness to a maximally-entangled state. Pairs are used as heralded single-photons to perform the first implementation of a quantum weak coin flipping protocol, allowing two distant players to decide of a random winner. Using quantum resources allows to enforce information-theoretic security and cheat-sensitivity. Cheating players are detected in a verification step, which involves a carefully optimized linear optical interferometer including beam splitters with variable reflectivities and a fast optical switch. We demonstrate high values of our protocol benchmarks for attenuations corresponding to several kilometers of telecom optical fiber. Alternatively, photon-pairs are used as maximally-entangled qubits to certify the transmission of a single qubit through an untrusted and lossy quantum channel. We provide a whole new protocol, based on the already-known self-testing technique and new fundamental results on lossy quantum channels. We demonstrate that protocol using photon-pairs entangled in polarization to probe the channel. We show it allows the certification of quantum communication for a large amount of losses induced by the channel. Finally, we provide a novel design in order to adapt this source to multipartite entanglement generation, enabling the implementation of new protocols involving more than two players.
答辩 : 2022-12-2
评委会 :
Nicolas BRUNNER, Professeur, Université de Genève [Rapporteur]
Fabio SCIARRINO, Professeur, Sapienza Università di Roma [Rapporteur]
Nicolas TREPS, Professeur, Sorbonne Université
Virginia D’AURIA, Maîtresse de Conférence, Université de Nice
Jean-Marc MEROLLA, Directeur de Recherche CNRS, Université de Besançon
Eleni DIAMANTI, Directrice de Recherche CNRS, Sorbonne Université
2022-2023 刊物
-
2023
- S. Neves, V. Yacoub, U. Chabaud, M. Bozzio, I. Kerenidis, E. Diamanti : “Experimental cheat-sensitive quantum weak coin flipping”, Nature Communications, vol. 14 (1), pp. 1855, (Nature Publishing Group) (2023)
- S. Neves, L. Martins, V. Yacoub, P. Lefebvre, I. Šupić, D. Markham, E. Diamanti : “Experimental Certification of Quantum Transmission via Bell’s Theorem”, (2023)
-
2022
- S. Neves : “Ressources Photoniques pour l’Implémentation de Protocoles de Réseaux Quantiques”, 博士论文, 答辩 2022-12-2, 责任导师 Diamanti, Eleni (2022)
- S. Neves, V. Yacoub, U. Chabaud, M. Bozzio, I. Kerenidis, E. Diamanti : “Experimental cheat-sensitive quantum weak coin flipping”, (2022)
- R. Yehia, S. Neves, E. Diamanti, I. Kerenidis : “Quantum City: simulation of a practical near-term metropolitan quantum network”, (2022)