Quantum entanglement in many-body systems: Some recent results on fundamental aspects and applications to quantum information science
speaker: Fabrizio Illuminati (Dipartimento di Fisica "E. R. Caianiello", Università degli Studi di Salerno)abstract: In this talk I will review some recent results by the Salerno quantum theory group on entanglement in many-body systems. First, I will discuss the phenomenon of long-distance entanglement in quantum spin models, some schemes for its implementation in optical lattices and coupled cavity arrays, and its use in protocols of long-distance, high-fidelity quantum communication. I will then review the general theory of ground-state factorization and illustrate how this property can be exploited as a tool to extract information on the phase diagram of frustrated quantum spin models. Finally, I will discuss a recently introduced generalization of the Wei-Goldbart geometric measure of entanglement and its applications to characterize and quantify multipartite quantum correlations.
timetable:
Sun 8 Nov, 9:00 - 9:30, Aula Bianchi Scienze
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