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Temporal coherence of surface plasmons in silver waveguides

Sur, S and Ghosh, A and Venkataraman, V (2021) Temporal coherence of surface plasmons in silver waveguides. In: Journal of the Optical Society of America B: Optical Physics, 38 (5). pp. 1457-1461.

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Official URL: https://doi.org/10.1364/JOSAB.419414


Surface plasmon polaritons, in spite of being lossy, are known to preserve their coherence over long distances. In this paper, we investigate the coherence of surface plasmons propagating on a silver thin film surface using free-space optical Mach Zehnder interferometry, where they are found to maintain their temporal coherence up to 80 _m, thus setting, for the first time to the best of our knowledge, a new limit. This can be important in applications integrating plasmonics with quantum information processing, where decoherence is a major challenge.

Item Type: Journal Article
Publication: Journal of the Optical Society of America B: Optical Physics
Publisher: The Optical Society
Additional Information: The copyright for this article belongs to the The Optical Society.
Keywords: Electromagnetic wave polarization; Quantum theory; Silver, Decoherence; Free-space optical; Mach Zehnder interferometry; Quantum-information processing; Silver thin films; Surface plasmon polaritons; Temporal coherence, Surface plasmons
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 29 Nov 2023 09:51
Last Modified: 29 Nov 2023 09:51
URI: https://eprints.iisc.ac.in/id/eprint/82979

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