Entanglement in quantum spin chains

Vladimir Korepin, Professor, C. N. Yang Institute for Theoretical Physics, Stony Brook University of Sciences 02 August 2018, 15:00-16:00 SkolTech, TPOC-4, Nobel str. 2, Blue Building, 4th floor, Room 407   ABSTRACT. Spin chains are models of realistic quantum devices. They can be realized in optical lattices and appear in un-isotropic crystalline structures in solid state. History of quantum entanglement and spin chains will be explained. The entanglement measures the level of quantum fluctuations. Different spin chains will be reviewed. The chains with highest level of fluctuations will be singled out. Short BIO. Vladimir Korepin is a theoretical and mathematical physicist. He did his undergraduate in Leningrad State University on Mathematical Physics,[…]

Schrödinger cats for a ‘quantum internet’ – Alex Lvovsky

Professor Alexander Lvovsky, Department of Physics and Astronomy, University of Calgary Group Lead, Quantum Optics Group, Russian Quantum Center Blue Building 303 (Multifunctional Zone)​, Skoltech Campus 29 May at 15:00     ABSTRACT: Superpositions of macroscopically distinct quantum states, introduced in Schrödinger’s famous Gedankenexperiment, are an epitome of quantum “strangeness” and a natural tool for determining the validity limits of quantum physics. The optical incarnation of Schrödinger’s cat – the superposition of two opposite-amplitude coherent states – is also the backbone of quantum information processing in the continuous-variable domain. The talk will cover recent experimental progress on preparing such states, applying them in quantum technology and communications, and increasing their[…]