Controlling light down to the single-photon level with integrated quantum photonic devices
| Dates: | 16 June 2022 |
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| Times: | 12:00 - 13:00 |
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| What is it: | Seminar |
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| Organiser: | Photon Science Institute |
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| Who is it for: | University staff, Current University students |
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| Speaker: | Dr Luca Sapienza |
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Join us for this PSI seminar with guest speaker Dr Luca Sapienza. Light-matter interactions allow exploring new physics and adding functionalities to photonic on-chip devices, thus enabling developments in classical and quantum light sources, energy harvesters and sensors. These advances have been facilitated by unprecedented control in growth and fabrication techniques that have opened new pathways to the design and realization of semiconductor devices where light emission, trapping and guidance can be efficiently controlled at the nanoscale.
In this context, Dr Sapienza will show the implementation of semiconductor quantum dots in nano-photonic cavities that can create simultaneously bright and pure, triggered single-photon sources, critical for quantum information technology. Dr Sapienza will then present photonic geometries for controlling light propagation and brightness in broadband, scalable devices, based on plasmonic nanostructures.
Hybrid systems can allow overcoming limitations due to specific material properties and this talk will show how hybrid III-V/Silicon devices can be a platform for cavity quantum electrodynamics, and Dr Sapienza will present a technique based on the transfer of semiconductor membranes embedding quantum emitters onto different host materials, for hybrid quantum photonic applications.
Finally, novel photonic designs based on bio-inspired aperiodic and disordered photonic crystals, showing efficient light confinement and optical sensing at visible wavelengths will be discussed.
Speaker
Dr Luca Sapienza
Organisation: Advanced Research Centre, University of Glasgow
Biography: Dr Luca Sapienza is a Reader in Quantum Technologies at the University of Glasgow (United Kingdom) where he is leading the Integrated Quantum Photonics group. His research activities are focused on the fundamental understanding of quantum optics phenomena, probed by solid-state emitters embedded within nano-fabricated quantum photonic devices. Besides fundamental research, he works towards the enhancement of the light-matter interaction on a chip for energy harvesting, sensing and quantum technology applications. His research work covers topics including mid-infrared quantum cascade structures, cavity polaritons, plasmonics, disordered photonics, quantum biology and nano-fabricated quantum photonic devices.
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