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Kuriakose, T., Walker, P.M. orcid.org/0000-0002-5431-318X, Dowling, T. et al. (13 more authors) (2022) Few-photon all-optical phase rotation in a quantum-well micropillar cavity. Nature Photonics, 16 (8). pp. 566-569. ISSN 1749-4885
Abstract
Photonic platforms are an excellent setting for quantum technologies as weak photon–environment coupling ensures long coherence times. The second key ingredient for quantum photonics is interactions between photons, which can be provided by optical nonlinearities in the form of cross-phase modulation. This approach underpins many proposed applications in quantum optics1,2,3,4,5,6,7 and information processing8, but achieving its potential requires strong single-photon-level nonlinear phase shifts as well as scalable nonlinear elements. In this work we show that the required nonlinearity can be provided by exciton–polaritons in micropillars with embedded quantum wells. These combine the strong interactions of excitons9,10 with the scalability of micrometre-sized emitters11. We observe cross-phase modulation of up to 3 ± 1 mrad per polariton using laser beams attenuated to below the average intensity of a single photon. With our work serving as a stepping stone, we lay down a route for quantum information processing in polaritonic lattices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author(s). This is an author-produced version of a paper subsequently published in Nature Photonics. Uploaded in accordance with the publisher's self-archiving policy. |
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) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N031776/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/R04385X/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/V026496/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Dec 2022 17:04 |
Last Modified: | 12 May 2023 08:31 |
Status: | Published |
Publisher: | Springer Science and Business Media LLC |
Refereed: | Yes |
Identification Number: | 10.1038/s41566-022-01019-6 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:194385 |
Available Versions of this Item
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Few-photon all-optical phase rotation in a quantum-well micropillar cavity. (deposited 12 May 2023 08:30)
- Few-photon all-optical phase rotation in a quantum-well micropillar cavity. (deposited 14 Dec 2022 17:04) [Currently Displayed]