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  Quantum and mesoscopic dynamics of light-matter fluids


   Faculty of Science and Engineering

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Prof K Burnham Prof F Laussy  No more applications being accepted  Funded PhD Project (European/UK Students Only)

About the Project

The Faculty of Science and Engineering (FSE) at the University of Wolverhampton is looking for a motivated and resourceful PhD student with an interest in condensed matter physics, numerical methods and fast-paced interactions with experimental collaborators, to take up a fully funded 3-year PhD research project.

Quasiparticles known as “polaritons” [1], that bind strongly a photon (light) and a crystal excitation (matter), are emerging objects in modern Physics made possible by the last decades progress in growing semiconductor heterostructures. They bring together the best of two worlds: the ultrafast speed and high coherence of light with the strong interactions of matter. As a result, they appear as new players with unique properties out of reach of the textbook disciplines that are atomic physics and photonics.

This thesis will focus on the theoretical description of so-called Bose-Einstein condensates of such particles, where a large number of them behave collectively as if a single macroscopic object [2]. The fundamental properties of this exotic phase of light and matter remains an active area of research [3], with its basic kinematic and dynamical properties yet to be fully explored. The research project will describe phenomenologically and simulate numerically such fluids, in configurations likely to be implemented in the laboratory, including, but not limited to, superluminal propagation of topological defects [4], the dynamics of objects with negative mass [5], the behaviour of polaritons beyond mean-field theories [6] and their possible contribution to open a path towards high-temperature superconductivity [7].

Enthusiastic students with a strong interest in highly competitive research are invited to consult the references below, from the supervising group, and if motivated to advance the state of the art in this field, to apply. For further information, please contact Prof. Fabrice P. Laussy (Supervisor) and/or Prof. Keith Burnham (Associate Dean, Research).

Eligibility and How to Apply
Please note eligibility requirement:
• The PhD studentship is only available to Home (UK) and EU students
• Academic excellence of the proposed student i.e., master or integrated master, or 1st at BSc level (or equivalent GPA from non-UK universities).
• If your BSc/MSc award was not delivered in English you will need to demonstrate proficiency in English at IELTS 6.5 or equivalent.

Deadline for applications: 30th November 2018
Start Date: January 2019

The University of Wolverhampton values a diverse workforce and welcomes applications from all sections of the community. The University holds an Athena SWAN Bronze award in recognition of our commitment to improving employment practices for the advancement of gender equality.

For further details regarding the project please and for informal discussion please contact the project supervisors at [Email Address Removed] and/or [Email Address Removed].

Application Process
Please submit a covering letter outlining your interest in the research programme, and an up to date CV detailing your academic qualifications and relevant work experience together with the names of two academic/professional referees. Please e-mail your application to the FSE Research Administrator: [Email Address Removed]


Funding Notes

The studentship is available to Home and EU students with a full stipend, paid for three years at RCUK rates (for 2018/19, this is £14,777 pa) and full Home/ EU Fees.

References

[1] Kavokin, A., Baumberg, J. J., Malpuech, G. & Laussy, F. P. Microcavities (Oxford University Press, 2017), 2 edn.
[2] Ballarini, D. et al. Macroscopic two-dimensional polariton condensates. Phys. Rev. Lett. 118, 215301 (2017).
[3] Caputo, D. et al. Topological order and thermal equilibrium in polariton condensates. Nature Mater. 17, 145 (2018).
[4] Colas, D. & Laussy, F. Self-interfering wave packets. Phys. Rev. Lett. 116, 026401 (2016).
[5] Colas, D., Laussy, F. & Davis, M. J. Negative-mass effects in spin-orbit coupled Bose–Einstein condensates. Phys. Rev. Lett. 121, 055302 (2018).
[6] Cuevas, A. et al. First observation of the quantized exciton-polariton field and effect of interactions on a single polariton. Science Advances 4, eaao6814 (2018).
[7] Laussy, F. P., Kavokin, A. V. & Shelykh, I. A. Exciton-polariton mediated superconductivity. Phys. Rev. Lett. 104, 106402 (2010).

Project supervisors

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