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Collective Interactions Between Cold Atoms and Light

  • Full or part time
  • Application Deadline
    Applications accepted all year round
  • Self-Funded PhD Students Only
    Self-Funded PhD Students Only

Project Description

The interaction between light and atoms is usually dominated by what happens inside each atom and the exchange of momentum between light and atoms is neglected. In cold atomic gases and Bose-Einstein condensates (BEC) however, the atom-light interaction can be dominated by the exchange of momentum between light and atoms, the consequent motion of the atoms due to optical forces and their resultant backaction on the optical field. These nonlinear opto-mechanical effects can couple the motion of many atoms, giving rise to collective behaviour and instabilities.

Nonlinear optomechanical phenomena are of interest both from a practical viewpoint as new optical nonlinearities and cooling mechanisms, and from a fundamental viewpoint as an example of self-organisation due to long-range coupling which can be either classical or quantum mechanical in character.

This project will involve theoretical and computational studies of nonlinear optomechanical phenomena arising from the exchange of linear ot orbital angular momentum between light and atoms. It is anticipated that there will be collaboration with theoretical and experimental groups in the U.K., Italy, Germany and France.


The successful applicant will become a member of the Scottish Universities Physics Alliance (SUPA) Graduate School, which offers a wide range of high-quality courses and training activities. See http://www.supa.ac.uk/Graduate_School/Graduate_School.htm for more details.

References

[1] G.R.M. Robb & W.J. Firth, "Collective Atomic Recoil Lasing with a Partially Coherent Pump", Phys. Rev. Lett. 99, 253601 (2007)
[2] G.R.M.Robb & B.W.J.McNeil, "Sum-frequency generation in an ultracold atomic gas due to collective atomic recoil", J. Phys. B 39, 4593-4603 (2006).
[3] G.R.M.Robb & B.W.J.McNeil, "Four-wave mixing with self-phasematching due to collective atomic recoil", Phys. Rev. Lett. 94, 023901 (2005).
[4] C.von Cube, S.Slama, D.Kruse, C.Zimmermann, P.W.Courteille, G.R.M.Robb, N.Piovella, R.Bonifacio, "Self-synchronization anddissipation-induced threshold in collective atomic recoil lasing", Phys. Rev. Lett. 93, 083601 (2004).
[5] G.R.M.Robb, N.Piovella, A.Ferraro, R.Bonifacio, P.W.Courteille, C. Zimmermann, "Collective atomic recoil lasing including friction and diffusion effects", Phys. Rev. A 69, 041403 (2004)

How good is research at University of Strathclyde in Physics?

FTE Category A staff submitted: 27.00

Research output data provided by the Research Excellence Framework (REF)

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