Nitrogen-Vacancy Centers as Nuclear Polarization Injectors for Spin-Based Quantum Sensing

About the Project

Supervisors:

Dr Christian Bengs C.Bengs@soton.ac.uk

Prof Malcolm Levitt mhl@soton.ac.uk

This project, within the EPSRC Centre for Doctoral Training in Quantum Technology Engineering at the University of Southampton (https://qte.ac.uk), carries a UKRI TechExpert enhanced annual stipend around £31k for UK students. While researching the project outlined below you will also receive substantial training in scientific, technical, and commercial skills.

Project Description:

Spin-based quantum sensing converts tiny quantum signals into detectable responses by aligning microscopic spins, for example in diamond nitrogen-vacancy centres. Can this alignment be exploited to amplify responses in other systems? This project addresses that question—theoretically and experimentally—via novel transfer protocols utilising periodic control fields and Floquet-engineering methods.

Optically active colour centres, such as diamond nitrogen-vacancy (NV) centres, have emerged as promising quantum devices for quantum computation and quantum sensing applications, as well as efficient sources of spin hyperpolarization. While control via external fields is common to many quantum platforms, NV diamonds are uniquely flexible in that their operational mode can be dynamically reconfigured through optical and magnetic control, or any combination of these. In this project, you will develop novel nuclear hyperpolarization protocols (Dynamic Nuclear Polarization, DNP) exploiting the capabilities of NV diamond centres as versatile polarization injectors, with practical applications in spin-based quantum sensing. Unlike typical DNP techniques that require strong external magnetic fields, optical spin injection with NV centres operates effectively without them. Moreover, the periodic control fields (Floquet protocols) used for DNP can be readily adapted to facilitate quantum sensing operations. The project will encompass engineering, experimental, and theoretical components, tailored to the candidate’s interests. You will gain valuable experience and expertise in optical and radio-frequency quantum control strategies, such as Floquet-engineering and Dynamic Decoupling, common to a large variety quantum technologies. Candidates from diverse scientific backgrounds are encouraged to apply. A problem-solving orientation and the ability to work independently are valued. Solid mathematical skills, experience in optics or techniques related to magnetic resonance, and a background in quantum physics would be advantageous. Some Background: • https://doi.org/10.1038/s41467-022-32907-8 • https://arxiv.org/abs/2410.09028 • https://doi.org/10.1063/5.0252743

For more information, please contact the supervisor: Dr Christian Bengs C.Bengs@soton.ac.uk

Entry Requirements:

Undergraduate degree (at least UK 2:1 honours degree, or international equivalent).

Closing Date:

31 July 2026. International applicants must apply before 31 March 2026.

Funding:

See funding notes below.

How to Apply:

Please apply via the online portal and select:

• Programme type: Research
• Academic year: 2026/27
• Full time or part time
• Faculty: Engineering and Physical Sciences

Search for programme PhD Quantum Tech Eng

Please add the name of the supervisor in section 2 of the application.

Applications should include:

• your CV (resumé)
• 2 academic references
• degree transcripts/ certificates to date
• English language qualification (if applicable)