Hurst, D.L., Price, D.M., Bentham, C. et al. (7 more authors) (2018) Nonreciprocal transmission and reflection of a chirally coupled quantum dot. Nano Letters, 18 (9). pp. 5475-5481. ISSN 1530-6984
Abstract
We report strongly non-reciprocal behaviour for quantum dot exciton spins coupled to nano-photonic waveguides under resonant laser excitation. A clear dependence of the transmission spectrum on the propagation direction is found for a chirally-coupled quantum dot, with spin up and spin down exciton spins coupling to the left and right propagation directions respectively. The reflection signal shows an opposite trend to the transmission, which a numerical model indicates is due to direction-selective saturation of the quantum dot. The chiral spin-photon interface we demonstrate breaks reciprocity of the system and opens the way to spin-based quantum optical components such as optical diodes and circulators in a chip-based solid-state environment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.8b01869. |
Keywords: | quantum dot; waveguide; spin; chirality; nanophotonics |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Aug 2018 11:32 |
Last Modified: | 06 Aug 2019 00:39 |
Published Version: | https://doi.org/10.1021/acs.nanolett.8b01869 |
Status: | Published |
Publisher: | American Chemical Society |
Refereed: | Yes |
Identification Number: | 10.1021/acs.nanolett.8b01869 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:134312 |