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Photoluminescence studies of single GaSb quantum rings

Young, Matthew, Roberts, Jonny, Woodhead, Christopher ORCID:, Noori, Yasir, Sanchez, A., Smakman, E.P., Koenraad, P.M., Hayne, Manus and Young, Robert 2014. Photoluminescence studies of single GaSb quantum rings. Presented at: UK Semiconductors Conference, Sheffield, U.K, 9-10 July 2014.

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True sources of quantum light, where the number of photons in a pulse can be precisely tailored, prove to be a valuable resource in many emerging technologies. These include quantum key distribution, metrology and sub-diffraction limited imaging. Using individual zero-dimensional nanostructures within a structure can allow devices such as quantum light sources, such as single photon emitters1 and high-fidelity entangled photon sources2,3 to be created. The majority of research into nanostructures for quantum light sources has been self-assembled InAs/GaAs quantum dots. This system is, however, limited to low temperature operation. An alternate material system will be presented in this work, looking to overcome this limitation: GaSb/GaAs quantum rings. These heterostructures exhibit a type-II band alignment and have a very large hole confining potential. With its strong hole confinement the rings can emit light at room temperature. Results from micro-photoluminescence measurements on the dot system will be presented alongside scanning probe microscopy.

Item Type: Conference or Workshop Item (Other)
Status: Unpublished
Schools: Physics and Astronomy
Additional Information: 2014. Abstract from UK Semiconductors Conference, United Kingdom.
Last Modified: 09 Nov 2022 10:57

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