Postgraduate research opportunities

Quantum properties of integrated frequency combs for applications in computing, communications and sensing

This experimental project will investigate the quantum properties of the frequency combs generated via parametric processes in integrated platforms (waveguides and microresonators). The student will work on the generation, characterisation and applications of highly entangled cluster states.

Number of places

1

Funding

Home fee, Stipend

Opens

18 November 2020

Duration

3.5 years

Eligibility

To enter our PhD programme applicants require an upper-second or first class BSc Honours degree, or a Masters qualification of equal or higher standard, in Physics, Engineering or a related discipline. 

Project Details

Quantum states of light are playing an increasingly important role in the applications of quantum technologies, ranging from secure communications to enhanced computing and sensing (imaging, spectroscopy, etc.). At the core of these applications lies our ability to generate the required quantum states, from entangled to single photons and squeezed states. In recent years, the quantum optics community has been looking at integrated optical circuits for further pushing the development of quantum technologies [1]. On the one hand, reduced size and robust devices support quantum technologies applications outside research laboratories. On the other hand, the capabilities allowed by integrated circuits enable the study of novel physical processes.

This project will investigate the quantum properties of the frequency combs generated via spontaneous parametric processes in integrated platforms. Different devices and configurations will be analysed, targeting applications ranging from quantum computing based on cluster states [2] to integrated metrological tools with squeezed states [3] and wavelength-multiplexed quantum communications. The project will involve a combination of experimental and theoretical/numerical studies. The student will use numerical modelling methods to design optimised integrated devices that will be fabricated via academic collaborators or commercial foundries. The student will design and build in state-of-the-art photonics laboratories the optical setups required for the generation and characterisation of the desired quantum states of light.

Research findings will be published in high-impact journals with the opportunity to present at international conferences. 

 

References:

[1] L. Caspani et al., “Integrated sources of photon quantum states based on nonlinear optics”, Light: Science & Applications 6, e17100 (2017).

[2] C. Reimer et al., “High-dimensional one-way quantum processing implemented on d-level cluster states”, Nature Physics 15, 148 (2019).

[3] F. Mondain et al., “Chip-based squeezing at a telecom wavelength”, Photonics Research 7, A36 (2019).

 

Institute of Photonics:

The Institute of Photonics (IoP), part of the Department of Physics, is a centre of excellence in applications-oriented research at the University of Strathclyde - The Times and Sunday Times Good University Guide 2020 Scottish University of the Year, The Queen’s Anniversary Prize for Higher and Further Education 2019, The Times Higher Education UK University of the Year 2019/20 (and 2012/13), The Times Higher Education Widening Participation Initiative of the Year 2019 and UK Entrepreneurial University of the Year 2013/14. The Institute’s key objective is to bridge the gap between academic research and industrial applications and development in the area of photonics. The IoP is located in the £100M Technology and Innovation Centre on Strathclyde’s Glasgow city centre campus, at the heart of Glasgow’s Innovation District, where it is co-located with the UK’s first Fraunhofer Research Centre. Researchers at the IoP are active in a broad range of photonics fields under the areas of Photonic Devices, Advanced Lasers and Neurophotonics, please see:

 http://www.strath.ac.uk/science/physics/instituteofphotonics/ourresearch/

Funding Details

Scholarships (fees and stipend) available for UK students.