If you made any changes in Pure these will be visible here soon.

Personal profile

Research interests

The application of quantum mechanics to information science removes certain limits set by classical physics. Quantum technologies provide a level of performance that cannot be reached through classical means, promising fast and powerful computation, secure and efficient communication, and ultra high-resolution imaging. To fully realise these gains, we require the development of techniques that preserve the enhancement, and optical methods provide many opportunities to achieve these goals.

In the Experimental Quantum Optics group, a core area of research is the development of novel methods for the generation, manipulation, and detection of quantum states of light. Our interests include the application of high-dimensionally entangled systems to secure communication protocols, the development of direct and indirect methods for the measurement of quantum states, the fundamental limits of super-resolution imaging, and the development of ultra-sensitive photonic sensors. Ultimately, we are interested in how new methods in quantum optics can enable us to reach the performance advantages of quantum technologies.

For more information please see the Experimental Quantum Optics group website.

Biography

Jonathan joined Heriot-Watt University in the autumn of 2012 to establish a research program in experimental quantum optics. His research interests are in applying classical and quantum optics techniques to solve problems in information science, nano-photonic optical sensing and sub-resolution imaging. 

Prior to joining Heriot-Watt, Jonathan was a senior research associate in the Quantum Photonics group at the University of Ottawa, Canada.   He worked closely with Prof. Robert Boyd, the Canada Excellence Research Chair (CERC), to develop the research program in nanophotonics methods for quantum nonlinear optics. Before this position in Canada, Jonathan was a postdoctoral researcher in the Optics Group at the University of Glasgow, UK. 

Jonathan's recent work in the field of quantum optics include using high-dimensional quantum entanglement to show violations of generalised Bell inequalities, holographic ghost imaging, and an experimental demonstration of the angular EPR paradox. These experiments explore the capabilities of high-dimensional spatial entanglement for important quantum information protocols. 

On completion of his PhD, obtained from the University of Glasgow, Jonathan worked to integrate the fields of optical trapping and microfluidics to develop ultra-senstive sensors. He also has industrial experience from his work with Lumerical Inc, a world leading nano-photonic design software company. Jonathan started his undergraduate work at the University of Manchester and then moved to study at the University of Glasgow, where he obtained an MSci in Physics.  

Research Group Contact Details

Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

  • 9 Similar Profiles
photons Physics & Astronomy
Photons Engineering & Materials Science
angular momentum Physics & Astronomy
Cameras Engineering & Materials Science
orbitals Physics & Astronomy
Imaging techniques Engineering & Materials Science
Avalanche diodes Engineering & Materials Science
cameras Physics & Astronomy

Co Author Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2006 2018

Attosecond-Resolution Hong-Ou-Mandel Interferometry

Lyons, A., Knee, G. C., Bolduc, E., Roger, T., Leach, J., Gauger, E. & Faccio, D. F. A., 4 May 2018, In : Science Advances. 4, 5, 8 p., eaap9416

Research output: Contribution to journalArticle

Open Access
interferometry
photons
geometry
time lag
interference

Diffuse time-of-flight imaging with a single-photon camera

Lyons, A., Boccolini, A., Tonolini, F., Repetti, A., Chen, Z., Leach, J., Henderson, R., Wiaux, Y. & Faccio, D., 2018, Computational Optical Sensing and Imaging 2018. Optical Society of America, CM2E.6

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Optical resolving power
Image resolution
Photons
Cameras
Imaging techniques

Enhancing the recovery of a temporal sequence of images using joint deconvolution

Caramazza, P., Wilson, K., Gariépy, G., Leach, J., McLaughlin, S., Faccio, D. & Altmann, Y., 27 Mar 2018, In : Scientific Reports. 8, 5257

Research output: Contribution to journalArticle

Open Access
File
recovery
pulses
CCD cameras
counting
pixels

How fast is a twisted photon?

Lyons, A., Roger, T., Westerberg, N., Vezzoli, S., Maitland, C., Leach, J., Padgett, M. J. & Faccio, D., 20 Jun 2018, In : Optica. 5, 6, p. 682-686 5 p.

Research output: Contribution to journalArticle

Open Access
File
angular momentum
orbitals
photons
twisting
ray tracing

Acquisition of multiple photon pairs with an EMCCD camera

Bolduc, E., Faccio, D. & Leach, J., May 2017, In : Journal of Optics. 19, 5, 054006

Research output: Contribution to journalArticle

Open Access
File
acquisition
Photons
Cameras
cameras
photons

Datasets

Non-line-of-sight tracking of people at long range

Faccio, D. F. A. (Creator), Chan, S. (Creator), Leach, J. (Creator), Warburton, R. E. (Creator), Heriot-Watt University, 20 Feb 2017

Dataset

Matlab files for quantum tomography

Leach, J. (Creator), Heriot-Watt University, 17 Oct 2016

Dataset

Simultaneous entanglement swapping of multiple orbital angular momentum states of light

Leach, J. (Creator), Faccio, D. F. A. (Creator), Roger, T. (Creator), Heriot-Watt University, 2017

Dataset

Prizes

Switched On Award for Most Engaging Lecturer 2015

Jonathan Leach (Recipient), 13 May 2015

Prize: Prize (including medals and awards)

Students

Activities 2014 2015

  • 3 Participation in Festival or Exhibition
  • 3 Public lecture

Capturing Nature

Leach, J. (Speaker)
5 Jul 2015

Activity: Talk or presentationPublic lecture

International Year of Light & Light Based Technologies 2015

Leach, J. (Participant)
11 Apr 2015

Activity: Participating in or organising an eventParticipation in Festival or Exhibition

Engineering the New Enlightenment

Leach, J. (Speaker)
14 Apr 2015

Activity: Talk or presentationPublic lecture

International Year of Light & Light Based Technologies 2015

Leach, J. (Participant)
23 Feb 2015

Activity: Participating in or organising an eventParticipation in Festival or Exhibition

'Meet the Experts' Explorathon '14

Leach, J. (Speaker)
26 Sep 2014

Activity: Talk or presentationPublic lecture