Durham Atomic and Molecular Physics 
AtMol Research Seminar Archive

Date  Speaker  Institution 

No Seminar  
27th April  


No Seminar  
4th May  


Resheduled for next term on October 26th  
11th May  Dr John Morton  University of Oxford 


Towards formation of ultracold RbCs  
18th May  Ruth Le Sueur  Durham University 


First year seminar  
23rd May (10am group meeting time)  Danielle Boddy  Durham University AtMol 


Entanglement with experimentalists and theorists  
25th May  Dr. Erika Andersson  Heriot Watt University 
With the exception of quantum key distribution, experiments in quantum information science are far behind theoretical work. It is important to try to bridge this gap. I will start by briefly describing two fruitful collaborations between theorists and experimentalists. First, together with the Optics group at Glasgow University, we have recently been able to obtain violations of Bell inequalities in 11 x 11 dimensions using the orbital angular momentum of light. This demonstrates that light with orbital angular momentum can provide highdimensional entangled states for quantum information. Using highdimensional entanglement, it may also be feasible to close the detection loophole. The second topic is a realisation of a quantum walk using a compact and scalable fibre loop setup, in collaboration with the University of Erlangen. Quantum walks have been shown to speed up search problems and to play a role as a computational primitive. The fibre loop setup, due to its flexibility, provides a rich playground for investigations of the physics of quantum walks. A theoretical proposal which we hope would be feasible to implement is a scheme to entangle nanocantilevers using interaction mediated by a BoseEinstein condensate. If the main decay channel is through the condensate, then an initially separable state of the combined system would relax towards a state where the two nanocantilevers are entangled. 

First Year Seminar  
27th May (Friday 10 am) room ph30  Kirsteen Butler  Durham University AtMol 


First year seminar  
30th May (10am group meeting time)  John Helm  Durham University AtMol 


First year seminar  
1st June  David Paredes  Durham University AtMol 


First year seminar  
6th June (10am group meeting time)  Christoph Vaillant  Durham University AtMol 
Calculations of exited state lifetimes in atoms provide a rich testing ground for our understanding of multielectron effects. We specifically examine the calculations of natural lifetimes along the perturbed singlet 5snd series of strontium, and the calculations of widths in high angular momentum autoionising states 

Rydberg Lithium interacting with weak electric fields  
8th June  Dr. Derek Richards  The Open University 


Resheduled next term  
15th June  Prof. Stefan Maier  Imperial College London 


Topological defects in multicomponent BoseEinstein condensates  
23rd June  Dr. Peter Mason  Université Pierre et Marie Curie 
I will look at the ground state and topological defects of two coupled nonlinear Schrodinger equations modelling rotating two component condensates in terms of the different physical parameters. We I will introduce a nonlinear sigma model which allows for a description of the system in terms of a single equation with a 'pseudospin'.'

Room Bookings for Ph30 are made by contacting Ian Buckingham at Student Planning and Assessment by internal phone number: 46430
This can be viewed online at:
http://timetable.dur.ac.uk/room_dur.htm
Select Room: D/PH30 (106)
Room is currently booked for weeks: 1019, 2533, 3947.
Department of Physics, Durham University  Tel +44 (0)191 33 43520 
Rochester Building, Science Laboratories  Fax +44 (0)191 33 45823 
South Road, Durham DH1 3LE  
United Kingdom  © Simon A Gardiner, Durham University 2005 