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Postgraduate research project

Photoswitches as light driven molecular qubits for quantum computing

Funding
Competition funded View fees and funding
Type of degree
Doctor of Philosophy
Entry requirements
2:1 UK honours degree View full entry requirements
Faculty graduate school
Faculty of Engineering and Physical Sciences
Closing date

About the project

Controlling molecular spin states remotely (i.e. with light) is key to enabling next generation quantum sensing and computing technologies. This project will focus on the synthesis and characterisation of novel photoswitches that will enable control over either radical persistence or dynamic spin state interactions.

Molecular photoswitches undergo reversible structural changes in response to light and are the cornerstone of many stimuli responsive materials. Whilst they have found range of applications in biomedical and material fields, their use in controlling spin-states is more limited (for reference, Organic Spin-State Photoswitches). The properties of organic photoswitches can be altered through judicious synthetic alterations, enabling access to tuneable half-lives, activation wavelengths, distances between positions and photostationary states. Achieving such precise control over properties make all organic spin state photoswitches ideal candidates for the development of novel technologies including quantum sensing and as qubits for quantum computers. This strategy also circumvents the issues of conventional spin state switches, which are often based on toxic metal complexes, enabling the development of more environmentally benign technologies.

This project will use chemistry recently developed in the Williams group to synthesise novel photoswitches with tuneable properties which enable the control over the spin state using low energy (long wavelength) light. In doing so, the candidate will gain expertise in:

  • organic synthesis 
  • photophysical characterisation
  • quantum chemical calculations 
  • advanced NMR techniques

The project will be jointly supervised by Dr George Williams and Dr Karl Michael Ziems, who will support the experimental and theoretical aspects respectively. 

The University of Southampton is committed to promoting equality, diversity inclusivity as demonstrated by our Athena SWAN award. We welcome all applicants regardless of their gender, ethnicity, disability, sexual orientation or age, and will give full consideration to applicants seeking flexible working patterns and those who have taken a career break. The University has a generous maternity policy, onsite childcare facilities, and offers a range of benefits to help ensure employees’ well-being and work-life balance. The University of Southampton is committed to sustainability and has been awarded the Platinum EcoAward.

Application deadlines:

  • UK applicants: 31 July 2027
  • International applicants: 31 March 2027