A fully guided-wave squeezing experiment for fiber quantum networks

Year: 2016

Authors: Kaiser F., Fedrici B., Zavatta A., D’Auria V., Tanzilli S.

Autors Affiliation: Univ Nice Sophia Antipolis, Lab Phys Matiere Condensee, CNRS UMR 7336, Parc Valrose, F-06108 Nice 2, France; Ist Nazl Ott INO CNR, Largo Enrico Fermi 6, I-50125 Florence, Italy; Univ Firenze, LENS, I-50019 Florence, Italy; Univ Firenze, Dept Phys, I-50019 Florence, Italy.

Abstract: Squeezed light is a fundamental resource for quantum communication. In view of its real-world applications, the realization of easy-to-operate experimental systems compatible with existing fiber networks is a crucial step. To comply with these requirements, we demonstrate the feasibility of a squeezing experiment at a telecom wavelength realized, for the first time, in an entirely guided-wave fashion. In our work, the state generation relies on waveguide nonlinear optics technology while squeezing collection and transmission are implemented by using only telecom fiber components. By doing so, we observe up to -1.83 +/- 0.05 dB of squeezing emitted at 1542 nm in the CW pumping regime. The compactness and stability of the experiment, compared to free-space configurations, represent a significant advance towards achieving out-of-the-lab continuous variable quantum communications that are fully compatible with long-distance operations in telecom fibers. We believe that this work stands as a promising approach for real applications as well as for “do-it-yourself” experiments.

Journal/Review: OPTICA

Volume: 3 (4)      Pages from: 362  to: 365

More Information: Agence Nationale de la Recherche (ANR) (SPOCQ: ANR-14-CE32-0019, CONNEQT: ANR-2011-EMMA-0002); Fondation Simone et Cino Del Duca; Centre National de la Recherche Scientifique.
KeyWords: Fibers; Guided electromagnetic wave propagation; Nonlinear optics, Continuous variables; Experimental system; Free-space configurations; Fully compatible; Quantum network; Real applications; State generations; Telecom wavelengths, Quantum communication
DOI: 10.1364/OPTICA.3.000362

Citations: 73
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