Quantum Lunch – University of Copenhagen

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QMath > Events > Quantum Lunch > Quantum Lunch week 5

Quantum Lunch

Title: Capacities for quantum memories

Speaker: Alexander Mueller-Hermes

Abstract: Quantum memories can be regarded as quantum channels that transmit information through time without moving it through space. Aiming at a reliable storage of information we may thus not only encode at the beginning and decode at the end, but also intervene during the transmission - a possibility not captured by the ordinary capacities in Quantum Shannon Theory. In my talk I introduce capacities for the transmission of quantum information via dynamical semigroups of Lindblad form that take this possibility into account. If there is time I will also mention how Log-Sobolev inequalities can be used to find upper bounds on an important instance of these capacities.