Hallett, D., Foster, A.P. orcid.org/0000-0002-5817-0008, Whittaker, D.M. et al. (2 more authors) (Submitted: 2021) Engineering strong chiral light-matter interactions in a waveguide-coupled nanocavity. arXiv. (Submitted)
Abstract
Spin-dependent, directional light-matter interactions form the basis of chiral quantum networks. In the solid state, quantum emitters commonly possess circularly polarised optical transitions with spin-dependent handedness. We demonstrate theoretically that spin-dependent chiral coupling can be realised by embedding such an emitter in a waveguide-coupled nanocavity, which supports two near-degenerate, orthogonally-polarised cavity modes. The chiral behaviour 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 (β>0.95) waveguide coupling and enhanced light-matter interaction strength (Purcell factor FP>60). In combination, these parameters could enable the development of highly coherent spin-photon interfaces, and may even allow access to the chiral strong-coupling regime using integrated nano-photonic devices.
Metadata
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Copyright, Publisher and Additional Information: | © 2021 The Author(s). For reuse permissions, please contact the Author(s). | ||||
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 Jan 2022 08:40 | ||||
Last Modified: | 17 Jan 2022 08:40 | ||||
Published Version: | https://arxiv.org/abs/2108.01462v2 | ||||
Status: | Submitted | ||||
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