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Photon Subtraction by Many-Body Decoherence

TitlePhoton Subtraction by Many-Body Decoherence
Publication TypeJournal Article
Year of Publication2018
AuthorsC.. R. Murray, I.. Mirgorodskiy, C.. Tresp, C.. Braun, A.. Paris-Mandoki, A. V. Gorshkov, S.. Hofferberth, and T.. Pohl
Date PublishedMAR 13
Type of ArticleArticle

We experimentally and theoretically investigate the scattering of a photonic quantum field from another stored in a strongly interacting atomic Rydberg ensemble. Considering the many-body limit of this problem, we derive an exact solution to the scattering-induced spatial decoherence of multiple stored photons, allowing for a rigorous understanding of the underlying dissipative quantum dynamics. Combined with our experiments, this analysis reveals a correlated coherence-protection process in which the scattering from one excitation can shield all others from spatial decoherence. We discuss how this effect can be used to manipulate light at the quantum level, providing a robust mechanism for single-photon subtraction, and experimentally demonstrate this capability.}, %%Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA