Coles, R.J., Price, D.M., Royall, B. et al. (4 more authors) (2017) Path-dependent initialization of a single quantum dot exciton spin in a nanophotonic waveguide. Physical Review B, 95 (12). 121401(R) . ISSN 2469-9950
Abstract
We demonstrate a scheme for in-plane initialization of a single exciton spin in an InGaAs quantum dot (QD) coupled to a GaAs nanobeam waveguide. The chiral coupling of the QD and the optical mode of the nanobeam enables spin initialization fidelity approaching unity in magnetic field B=1 T and >0.9 without the field. We further show that this in-plane excitation scheme is independent of the incident excitation laser polarization and depends solely on the excitation direction. This scheme provides a robust in-plane spin excitation basis for a photon-mediated spin network for quantum information applications.
Metadata
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Copyright, Publisher and Additional Information: | © 2017 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review B. Uploaded in accordance with the publisher's self-archiving policy. | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 29 Mar 2017 09:20 | ||||
Last Modified: | 14 Jul 2020 09:07 | ||||
Published Version: | https://doi.org/10.1103/PhysRevB.95.121401 | ||||
Status: | Published | ||||
Publisher: | American Physical Society | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1103/PhysRevB.95.121401 | ||||
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