<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Evening all,<div><br></div><div>Next week Simon Gardiner, from Durham University, will be giving the Optics Division seminar. Simon will be in the department from Wednesday afternoon and will be available for discussion - please let me know if you would like to schedule some time<div><br></div><div><div><b>Speaker:</b> Simon Gardiner, Durham</div><div><b>Date:</b> Wednesday, 4th November</div><div><b>Time:</b> 3pm</div><div><b>Location:</b> JA8.13 - SUPA Room</div><div><b>Title:</b> Bright Matter-Wave Solitons, Interferometry, and Rotational Sensing</div><div><b>Abstract:</b></div><div>An ultracold ensemble of bosonic atoms can condense into a Bose-Einstein condensate, where it is frequently legitimate to use a classical field description, encapsulated in the Gross-Pitaevskii equation. In certain limiting geometries this tends to the one-dimensional nonlinear Schrodinger equation, which in the case of attractive atom-atom interactions, supports bright soliton solutions. These attractively particle-like wave-forms have a number of advantages when considering the possibility of matter-wave interferometry --- using atoms or molecules rather than light to make interference measurements. I will talk about some of the issues surrounding such interferometric protocols, discussing Sagnac interferometry (for rotational sensing) as a particular example.</div></div><div><br></div><div>regards,</div><div>Griff</div></div></body></html>