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University of Southampton

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PhD in Integrated Quantum Buffers for Photonic Quantum Computing University of Southampton in United Kingdom

Degree Level

PhD

Field of study

Computer Science

Funding

The project is competition funded. Further fee and funding details are available through the University of Southampton fees and funding information.

Deadline

Jul 31, 2027

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Country

United Kingdom

University

University of Southampton

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Keywords

Computer Science
Electrical Engineering
Materials Science
Quantum Computing
Quantum Optics
Physics

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About this position

This PhD project will develop integrated quantum buffers for photonic quantum computing, addressing the challenge of temporarily storing photons while measurements and feed-forward operations take place in a quantum processor.

The research will combine rare-earth-ion-doped crystals with silicon nitride photonic circuits to create compact devices that can replace the hundreds of metres of optical fibre currently used to provide photon delays. The project focuses on thulium-doped yttrium aluminium garnet (TmYAG), whose optical coherence and controllable absorption make it promising for storing GHz-bandwidth photons.

You will investigate atomic frequency comb quantum buffers and work towards microsecond-scale delays in millimetre-scale integrated devices. The research will include characterising buffer efficiency and coherence, interfacing the devices with integrated single-photon sources, and exploring electrically controlled, on-demand photon retrieval.

The project offers hands-on research across cryogenic quantum optics, rare-earth-ion spectroscopy, integrated photonics and single-photon experiments. You will work in a multidisciplinary team spanning quantum memories and integrated photonics, with access to the University of Southampton's quantum optics laboratories and nanofabrication facilities.

The research environment also includes links with UK quantum-industry partners, including ORCA Computing and Duality Quantum Photonics, creating opportunities to understand how integrated quantum-buffer technologies may contribute to future photonic quantum processors.

Funding details

The project is competition funded. Further fee and funding details are available through the University of Southampton fees and funding information.

What's required

A 2:1 honours degree is required. The project involves cryogenic quantum optics, rare-earth-ion spectroscopy, integrated photonics, nanofabrication and single-photon experiments; relevant preparation in these areas would be advantageous, although no additional specific requirements are stated.

How to apply

Review the project and the University of Southampton's postgraduate research application guidance, then submit an application for this Doctor of Philosophy project before 31 July 2027 through the university's postgraduate research application process.

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