Space-Time Quantum Metasurfaces for Fault-Tolerant, Scalable Quantum Computing

About the Project

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:

This PhD project studies a new hardware paradigm for quantum computing, will theoretically design and experimentally realise a space-time quantum metasurface, a network of dynamically coupled, time-varying qubits. This architecture aims to enable real-time error mitigation and unlock scalable, fault-tolerant quantum processing through emergent collective phenomena.

The greatest obstacles to practical quantum computing are qubit errors and the daunting hardware complexity of scaling millions of qubits. This project proposes a radical solution: the space-time quantum metasurface. This novel architecture integrates a 2D array of superconducting qubits with local tuning elements, creating a surface where both spatial and temporal dimensions are actively engineered. By applying precise spatio-temporal modulations, we can generate a protected, high-dimensional Hilbert space where quantum information is encoded in the collective states of the surface, inherently resilient to local noise and errors. Your research will address the core challenge of scalability and error correction by: Developing theoretical models for the dynamics of large-scale coupled qubit arrays under spatio-temporal driving, predicting novel error-suppressing phases. Designing and simulating the metasurface unit cell, combining a qubit with integrated control elements to enable local parameter modulation. Fabricating prototype devices using our state-of-the-art nanolithography facilities and performing cryogenic microwave experiments to characterise collective dynamics, coherence, and real-time error mitigation capabilities. This research is critical as it could fundamentally bypass the need for massive redundant qubit overhead, providing a more direct path to scalable fault-tolerant quantum processors. You will gain unparalleled expertise in quantum theory, advanced nanofabrication, and cryogenic microwave engineering, working within a vibrant team with strong industrial and academic collaborations in quantum technologies.

For more information, please contact the supervisor: Dr Sajjad Taravati s.taravati@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)

We are committed to promoting equality, diversity, and inclusivity and give full consideration to applicants seeking part-time study. The University of Southampton takes personal circumstances into account, has onsite childcare facilities, is committed to sustainability and has been awarded the Platinum EcoAward.