Few-photon all-optical phase rotation in a quantum-well micropillar cavity
| Autor: | Tintu Kuriakose, Paul M. Walker, Toby Dowling, Oleksandr Kyriienko, Ivan A. Shelykh, Phillipe St-Jean, Nicola Carlon Zambon, Aristide Lemaître, Isabelle Sagnes, Luc Legratiet, Abdelmounaim Harouri, Sylvain Ravets, Maurice S. Skolnick, Alberto Amo, Jacqueline Bloch, Dmitry N. Krizhanovskii |
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| Přispěvatelé: | Department of Physics and Astronomy [Sheffield], University of Sheffield [Sheffield], University of Exeter, Institute of Science, University of Reykjavik, Dunhaga 3, Reykjavik 107, Iceland, ITMO University [Russia], Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Condensed Matter - Other Condensed Matter
[PHYS]Physics [physics] [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] FOS: Physical sciences Physics::Optics Atomic and Molecular Physics and Optics [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] Physics - Optics Electronic Optical and Magnetic Materials Optics (physics.optics) Other Condensed Matter (cond-mat.other) |
| Zdroj: | arXiv Nature Photonics Nature Photonics, 2022, 16 (8), pp.566-569. ⟨10.1038/s41566-022-01019-6⟩ |
| ISSN: | 1749-4885 1749-4893 |
| DOI: | 10.48550/arxiv.2106.13650 |
| Popis: | International audience; Photonic platforms are an excellent setting for quantum technologies because 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 (XPM). This approach underpins many proposed applications in quantum optics and information processing, but achieving its potential requires strong single-photon-level nonlinear phase shifts and also 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 excitons with the scalability of micrometer-sized emitters. We observe XPM up to $3 \pm 1$ mrad per particle using laser beams attenuated to below single photon average intensity. With our work serving as a first stepping stone, we lay down a route for quantum information processing in polaritonic lattices. |
| Databáze: | OpenAIRE |
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