Estimating the decoherence time using quantum functional inequalities

Seminar date and time: 
Thursday, 15 February, 2018 - 12:00
Institut des Hautes Études Scientifiques, Université Paris-Saclay, France
Ivan Bardet
GIQ Seminar Room C5/262

Environment Induced Decoherence is a physical concept which provides a dynamical explanation to the disappearance of quantum phenomenon in the real world. Intuitively, it states that a quantum system is never per- fectly isolated, so that quantum correlations disappear due to the action of the environment on the system. Focusing on finite-dimensional quantum systems undergoing Markovian evolutions, we propose natural generaliza- tions of certain non-commutative functional inequalities that are adapted to the study of decoherence. We obtain in this way a natural framework to generalize functional inequalities to non-primitive evolutions. We will also discuss possible applications to fault-tolerant quantum computation on decoherence-free subspaces and subsystems. 

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