Nano-scale imaging with Hong-Ou-Mandel Interferometry
Lead Research Organisation:
Heriot-Watt University
Department Name: Sch of Engineering and Physical Science
Abstract
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Organisations
Publications
Scott H
(2020)
Beyond coincidence in Hong-Ou-Mandel interferometry
in Physical Review A
Harnchaiwat N
(2020)
Tracking the polarisation state of light via Hong-Ou-Mandel interferometry.
in Optics express
Rouse DM
(2021)
Avoiding gauge ambiguities in cavity quantum electrodynamics.
in Scientific reports
Branford D
(2021)
Average number is an insufficient metric for interferometry
in New Journal of Physics
Scott H
(2021)
Noise limits on two-photon interferometric sensing
in Physical Review A
Toroš M
(2022)
Generation of Entanglement from Mechanical Rotation
in Physical Review Letters
Ndagano B
(2022)
Quantum microscopy based on Hong-Ou-Mandel interference
in Nature Photonics
| Description | In 2019, we discovered the limitations to monitoring the polarisation state of light in the context of Hong-Ou-Mandel interference. This type of interference is the building block of optical quantum networks and quantum computing, so it is vital to understand how it behaves. The work on the fundamental limits was published in January 2020 in Optics Express. In 2020, we published work on the theoretical limits of Hong-Ou-Mandel measurements when considering the effects of number-resolving and increased temporal resolution of the detectors. This work was published in PRA in September 2020. In 2021, we published work in PRA on what degree of noise Mach-Zehnder interferometry retains its edge over Hong-Ou-Mandel interferometry. This was a theoretical study into the fundamental limits on this type of measurement for measuring displacements. In 2021, we published work in the New Journal on Physics that tackled the question of whether the average number is an insufficient metric for interferometry. Again, this was a theoretical study. |
| Exploitation Route | The work that we have published will be used by our collaborators when designing new experiments that use Hong-Ou-Mandel interference. |
| Sectors | Other |
| Description | Invited talk at Photonics for Quantum Workshop at RIT, USA |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Postgraduate students |
| Results and Impact | Dr Leach gave an invited talk on applications of single-photon detector arrays and measurement techniques. The workshop was on the topic of photonics for quantum science, and it was held at RIT, USA. |
| Year(s) Of Engagement Activity | 2019 |
| Description | Public engagement at IOP Scotland Festival of Physics |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | Dr Gauger ran a public engagement event on Quantum Technology at the IOP Scotland Festival of Physics. This was held at Dynamic Earth in October. |
| Year(s) Of Engagement Activity | 2018 |