11/07/2006, 14:00 — 15:00 — Sala P6, Pavilhão de Matemática
Josep Batle Vallespir, U Balearic Islands
Entanglement, speed of quantum evolution and entropic inequalities
It has been recently pointed that, for certain classes of states, quantum entanglement enhances the "speed" of evolution of composite quantum systems, as measured by the time a given initial state requires to evolve to an orthogonal state. We provide a systematic study of this effect for pure states of bipartite systems of low dimensionality, considering both distinguishable (two-qubits) subsystems, and systems constituted of two indistinguishable particles. Mixed states are also considered. Finally, we discuss the entropic separability criterion and the so-called maximally entangled mixed states (MEMS).
Joint seminar with CFIF. Please note exceptional time and place.