Jalali Mehrabad, M. orcid.org/0000-0002-9809-9998, Foster, A.P. orcid.org/0000-0002-5817-0008, Martin, N.J. et al. (5 more authors) (2023) Chiral topological add–drop filter for integrated quantum photonic circuits. Optica, 10 (3). pp. 415-421. ISSN 2334-2536
Abstract
The integration of quantum emitters within topological nanophotonic devices enables the control of light–matter interactions at the single photon level. Here, we experimentally realize an integrated topological add–drop filter and observe multiport chiral emission from single photon emitters (quantum dots) embedded within the device. The filter is imprinted within a valley-Hall photonic crystal membrane and comprises a resonator evanescently coupled to a pair of access waveguides. We show that the longitudinal modes of the resonator enable the filter to perform wavelength-selective routing of light, protected by the underlying topology. Furthermore, we demonstrate that for a quantum dot located at a chiral point in the resonator, selective coupling occurs between well-defined spin states and specific pairs of the filter output ports. The combination of multiport routing, allied with the inherent nonreciprocity of the device at the single photon level, presents opportunities for the formation of complex quantum optical devices, such as an on-chip quantum optical circulator.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2023 Optica Publishing Group. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI (https://creativecommons.org/licenses/by/4.0/). |
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) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N031776/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Jun 2023 10:05 |
Last Modified: | 05 Jun 2023 10:05 |
Published Version: | http://dx.doi.org/10.1364/optica.481684 |
Status: | Published |
Publisher: | Optica Publishing Group |
Identification Number: | 10.1364/optica.481684 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:199628 |