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Highly adaptable photonic quantum interfaces: wavelength and bandwidth conversion


   Department of Physics

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  Dr Peter Mosley, Dr Josh Nunn  No more applications being accepted  Funded PhD Project (Students Worldwide)

About the Project

The University of Bath is inviting applications for the following funded PhD project commencing as soon as possible.

The goal of this PhD project is to develop optical fibre devices to allow increased connectivity and flexibility in quantum information networks of the future. These interfaces will ensure both wavelength and bandwidth compatibility across platforms including quantum dots, trapped ions, and photon-pair sources as well as allowing low-loss transmission of quantum information through telecoms fibre networks. The microstructured photonic crystal fibre that we fabricate in Bath provides a unique platform to achieve this by nonlinear frequency conversion [1, 2]. The project will involve experimental work in a well-equipped laboratory alongside optical fibre fabrication in our state-of-the-art cleanroom facility, accompanied by theory and numerical simulation.

The available PhD studentship is associated with the UK Quantum Technology Hub in Quantum Computation and Simulation (QCS) – a large national collaboration focused on developing technologies for quantum computation and quantum networks. Based in the Centre for Photonics and Photonic Materials (CPPM) in Bath, you will contribute to this collaborative effort with the opportunity to present your results at Hub meetings as well as high-profile international conferences. Supervised by Dr Peter Mosley and Dr Josh Nunn, you will be integrated into the cohort of graduate students in the CPPM with direct support from post-doctoral researchers working on related projects.

We are seeking applicants who are keen to develop their laboratory skills through working with cutting edge laser systems and learning how to design and fabricate optical fibre. You will also develop your analytic and computational skills as you model the devices that you will make. You will be expected to take part in weekly Centre meetings including giving research and journal club presentations as well as participating in “Quantum Club“, the CPPM’s journal discussion group focused on quantum optics.

Project keywords: quantum photonics, optical fibre, nonlinear optics.

Candidate Requirements:

Applicants should hold, or expect to receive, a First Class or good Upper Second Class Honours degree (or the equivalent) in Physics or a related subject. A master’s level qualification would also be advantageous. In addition, you must be enthusiastic and motivated to carry out high-quality lab work.

Enquiries and Applications:

Informal enquiries are welcomed and should be directed to Dr Peter Mosley ([Email Address Removed]).

Formal applications should be made via the University of Bath’s online application form for a PhD in Physics. Although the current application form is for 2023 entry, it should be noted that this position must start in the 2022/23 academic year and we are looking for a candidate to start as soon as possible. Please state your preferred start date in the relevant field on the application form.

More information about applying for a PhD at Bath may be found on our website

Note: Applications may close earlier than the advertised deadline if a suitable candidate is found. We advise you to contact Dr Mosley for an informal discussion prior to applying and to submit your formal application as early as possible.

Equality, Diversity and Inclusion:

We value a diverse research environment and aim to be an inclusive university, where difference is celebrated and respected. We welcome and encourage applications from under-represented groups.

If you have circumstances that you feel we should be aware of that have affected your educational attainment, then please feel free to tell us about it in your application form. The best way to do this is a short paragraph at the end of your personal statement.


Funding Notes

A studentship is available from the Quantum Computing & Simulation Hub (QCS) for up to 3.5 years. Funding covers tuition fees, a stipend (£17,668 2022/23 rate) and an allowance for research expenses, training and conference attendance. QCS studentships are open to both Home and International students; however, in line with guidance from UK Research and Innovation (UKRI), the number of awards available to International candidates will be limited to 30% of the total.

References

1. T. A. Wright et al, Resource-efficient frequency conversion for quantum networks via sequential four-wave mixing, Optics Letters 45, 4587 (2020)
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-16-4587.
2. C. Parry et al, Group-velocity symmetry in photonic crystal fibre for ultra-tunable quantum frequency conversion, Journal of Optics 23, 075202 (2021)
https://iopscience.iop.org/article/10.1088/2040-8986/ac01f6.

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