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Optimised chiral light-matter interactions at polarisation singularities for quantum photonics

Beggs, Daryl, Lang, Ben and Oulton, Ruth 2017. Optimised chiral light-matter interactions at polarisation singularities for quantum photonics. Presented at: 2017 19th International Conference on Transparent Optical Networks (ICTON), Girona, Catalonia, Spain, 2-6 July 2017. Transparent Optical Networks (ICTON), 2017 19th International Conference on. Transparent Optical Networks (ICTON) IEEE, 10.1109/ICTON.2017.8025144

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Photonic crystal waveguides support chiral-point polarisation singularities which give rise to local chirality even in the absence of a global chiral symmetry. Placing a quantum dot at such a C-point gives rise to a uni-directional emission dependent on the electron spin – ideal for applications in quantum information as it entangles the spin direction of electrons on the quantum dot (static qubits) to the path in the waveguide (flying qubits). Here we discuss the optimisation of this chiral light-matter interaction using slow-light waveguides, and show designs with 8.6 times enhancement of the local density of optical states at a C-point.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: IEEE
ISBN: 9781538608593
ISSN: 2161-2064
Date of First Compliant Deposit: 18 September 2017
Date of Acceptance: 6 July 2017
Last Modified: 02 Oct 2017 12:36

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