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Title: Coherent perfect absorption of single photons in a fiber network
Authors: Vetlugin, Anton N.
Guo, Ruixiang
Xomalis, Angelos
Yanikgonul, Salih
Adamo, Giorgio
Soci, Cesare
Zheludev, Nikolay I.
Keywords: Coherent Perfect Absorption
Quantum Fibre Network
Issue Date: 2019
Source: Vetlugin, A. N., Guo, R., Xomalis, A., Yanikgonul, S., Adamo, G., Soci, C., & Zheludev, N. I. (2019). Coherent perfect absorption of single photons in a fiber network. Applied Physics Letters, 115(19), 191101-. doi:10.1063/1.5118838
Series/Report no.: Applied Physics Letters
Abstract: Large distance implementation of quantum communication technologies requires coherent control of single photons in optical fibre networks. Here we demonstrate the phenomenon of coherent perfect absorption of single photons in a fully-fiberized ultrathin plasmonic metamaterial fabricated at the end facet of an optical fibre. Continuous control of single-photon absorption probability is achieved by driving the network between the regimes of coherent total absorption and coherent total transmission. To circumvent phase fluctuations inherent to optical fibre networks, we implemented a reference-based post selection technique which yielded interference fringe visibility comparable to that of free space experiments. Coherent absorption of quantum light in fibre environment provides new opportunities for dissipative single-photon switching, filtering and measurement, as well as for manipulation of entangled, weak coherent, and NOON states in optical fibre networks.
ISSN: 0003-6951
DOI: 10.1063/1.5118838
Schools: School of Physical and Mathematical Sciences 
Organisations: University of Southampton
Agency for Science, Technology and Research
Rights: © 2019 The Author(s). All rights reserved. This paper was published by AIP in Applied Physics Letters and is made available with permission of The Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
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