2nd of April 2013, 10:00 - 17:00
Cardiff University, School of Computer Science and Informatics, Trevithick West Extension WX/3.14
Contact: Frank C Langbein, F.C.Langbein@cs.cf.ac.uk
11th June 2013, 11:30 - 17:00
Aberystwyth University, Old College, Modern Languages Room
11:30 Guest talk by Guilia Gualdi (Florence): “Renormalization approach to non-Markovian open quantum system dynamics”
We show that time induces a dynamical renormalization of the system-environment coupling in open quantum system dynamics. The renormalization condition, of the interaction being either local, or, alternatively, defined on a finite continuum support, is generally fulfilled for both discrete and continuous environments. As a consequence, we find a generalized Lieb-Robinson bound to hold for local and, surprisingly, also for non-local interaction. This unified picture allows us to devise a controllable approximation for arbitrary non-Markovian dynamics with an a priori estimate of the worst case computational cost.
10th of July, 10:00 - 17:00
Aberystwyth University, Old College, Arts Lecture Theatre
10:00 Christian Arenz (Aberystwyth): Quantum control of a spin star
10:45 Sebastian Wildfeuer (Aberystwyth): Adiabatic Elimination in Quantum Feedback Networks
11:30 Tea/Coffee
12.00 Keith Hughes (Bangor University): Hierarchical effective mode approach to Non-Markovian reduced dynamics
12:45 Lunch
14.30 Guofeng Zhang (Hong Kong Polytechnic University): Geometric Measure of Entanglement and Non-negative Tensors
Geometric measure of entanglement is a popular measure of quantum entanglement. In this talk, we first show how the spectral theory of non-negative tensors can be applied to the study of the geometric measure of entanglement for pure states with non-negative amplitudes. After that, by means of symmetric embedding, we show the non- symmetric case can be converted to the symmetric case.
