Robert Taylor

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Robert Taylor

Head of Condensed Matter Physics

I am currently Head of Condensed Matter Physics here in Oxford. I work on the optical properties of materials at the Clarendon Laboratory, and I am also a Fellow of The Queen's College, where I am one of two tutors teaching approximately 24 physics students. I have been a permanent member of staff here since 1990. Full details of my teaching and research activities can be found at my group website.

Our work on nitride quantum dots has been showcased on the Science and Engineering South website here..

From October 2011 until October 2016 I was an Associate Head of the Mathematical, Physical and Life Sciences Division here in Oxford looking after academic matters. I am also a tutor at The Queen's College. As Head of Condensed Matter Physics I am in charge of the graduate teaching course.

During my career I have investigated wide-bandgap semiconductors and low-dimensional systems such as quantum wells, wires and dots. Experiments include time-resolved and time-integrated microphotoluminescence spectroscopy of quantum dots and nanotubes in the single photon regime, cavity-exciton coupling, coherent electron-hole dynamics, excitonic dynamics and gain mechanisms in bulk and quantum well lasers. Please have a look at my publication list at my group website for references to relevant recent work.

In February 2015 I started work on an EPSRC project to try to produce a source of controllable single photons from non-polar InGaN quantum dots in collaboration with Dr. Rachel Oliver's group at the Department of Materials Science and Metallurgy in Cambridge. We have succeeded in producing an optically pumped single photon source up to 220K, work which was published recently in Nanoscale.

Until December 2009 I was part of the Quantum Information Processing IRC (QIPIRC), directed by Prof. Andrew Briggs at the Department of Materials in Oxford. I was looking at InGaN quantum dots, studying dephasing, carrier lifetime and inter-dot interactions. For more details see the project website at I also work on dots made from InGaAs, which emits in the infrared. These dots are registered optically and then placed in cavities formed by using photonic bandgap structures, also as part of the IRC in quantum information processing.

In May 2010 I was awarded a grant as part of the Materials World network jointly with Dr. Rachel Oliver at the Department of Materials, Cambridge University and Prof. Evelyn Hu at the School of Engineering and Applied Sciences, Harvard University. The title of the project was "Materials World Network to Optimize the Growth of InGaN Quantum Dots within High Quality Optical Micro-Cavities". A summary of the project can be found here at the EPSRC website.

In April 2013 I started work on a new project in collaboration with Dr. Fred Brossard at Hitachi Cambridge Labortories and Prof. Ray Murray at Imperial College, London. The title of the project is "Long wavelength single photon sources and dotonic molecules". A summary of the project can be found here at the EPSRC website.

I was also part of a Martin School grant on "Probing energy transfer in organic molecules using microcavity spectroscopy" with Dr. Jason Smith at the Department of Materials here in Oxford. This is part of a programme on "Bio-Inspired Quantum Technologies" directed by Prof. Vlatko Vedral and Dr. Dieter Jaksch, which aims to develop a new methodology for overcoming the extreme fragility of quantum memory by learning how biological molecules shield quantum states from the environment.

In February 2018 I started work with a company called Quantopticon on an Innovate UK grant entitled "Simulation software for modelling nitride-based quantum light sources". I am also part of a feasibility study on novel etching techniques with the Cardiff Compound Semiconductor manufacturing hub.

The microphotoluminescence systems that I have in my research group enable me to measure the time-integrated and time-resolved properties of materials at wavelengths extending from 266nm in the UV to 1.7 microns in the infrared. I welcome enquiries from companies wishing to make use of these systems for measurements and I am happy to offer a consultancy service to enable measurements of this kind to be planned and undertaken. Please contact me by email at