Hallett, D., Foster, A.P. orcid.org/0000-0002-5817-0008, Whittaker, D. et al. (2 more authors) (2022) Engineering chiral light–matter interactions in a waveguide-coupled nanocavity. ACS Photonics, 9 (2). pp. 706-713. ISSN 2330-4022
Abstract
Spin-dependent, directional light–matter interactions form the basis of chiral quantum networks. In the solid state, quantum emitters commonly possess circularly polarized optical transitions with spin-dependent handedness. We demonstrate numerically that spin-dependent chiral coupling can be realized by embedding such an emitter in a waveguide-coupled nanocavity, which supports two near-degenerate, orthogonally polarized cavity modes. The chiral behavior arises due to direction-dependent interference between the cavity modes upon coupling to two single-mode output waveguides. Notably, an experimentally realistic cavity design simultaneously supports near-unity chiral contrast, efficient (>95%) cavity-waveguide coupling and enhanced light–matter interaction strength (Purcell factor FP > 70). In combination, these parameters enable the development of highly coherent spin–photon interfaces ready for integration into nanophotonic circuits.
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Copyright, Publisher and Additional Information: | © 2022 American Chemical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0) | ||||
Keywords: | nanophotonics; chiral quantum optics; photonic resonators; Purcell effect; quantum emitter | ||||
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) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 17 Jun 2022 13:41 | ||||
Last Modified: | 17 Jun 2022 13:41 | ||||
Status: | Published | ||||
Publisher: | American Chemical Society (ACS) | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1021/acsphotonics.1c01806 |
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Filename: Engineering Chiral Light-Matter Interactions in a Waveguide-Coupled Nanocavity.pdf
Licence: CC-BY 4.0