Qymru

Groups

Tue, 10 Sep 2019 00:00:00 +0000

Tue, 10 Sep 2019 00:00:00 +0000

Tue, 10 Sep 2019 00:00:00 +0000

This is a list of some of the current projects by QYMRU members. For details please contact the members involved.

Quantum Control for Magnetic Resonance Imaging and Spectroscopy
- SG Schirmer, J Phillips, F Boy, R Hugtenburg (Swansea Uni), FC Langbein, Max Chandler, Chris Jenkins (Cardiff Uni)
  
  We are investigating the use of quantum control techniques, computational modelling and machine learning to enhance magnetic resonance imaging.
Geometry, Control and Characterisation of Quantum Spin Networks
- E Jonckheere (USC), FC Langbein (Cardiff Uni), SG Schirmer (Swansea Uni)

Tue, 10 Sep 2019 00:00:00 +0000

Mon, 01 Jan 0001 00:00:00 +0000

2nd of April 2013, 10:00 - 17:00
Cardiff University, School of Computer Science and Informatics, Trevithick West Extension WX/3.14

10:00 Coffee
10:30 Introductions
Chair: Frank Langbein
10 Minutes talk per attendee to give a brief overview of their work
12:00 Lunch
13:30 Joint work and proposals
Chair: Daniel Burgarth
15:00 Coffee
15:30 The Future of QYMRU
Chair: Sophie Schirmer
17:00 Close
18:00 Optional dinner

Contact: Frank C Langbein, F.C.Langbein@cs.cf.ac.uk

Mon, 01 Jan 0001 00:00:00 +0000

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.

Mon, 01 Jan 0001 00:00:00 +0000

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.