Nanophotonic quantum phase switch with a single atom

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Nanophotonic quantum phase switch with a single atom

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Title: Nanophotonic quantum phase switch with a single atom
Author: Tiecke, Tobias; Thompson, Jeffrey Douglas; de Leon, Nathalie Pulmones; Liu, L; Vuletić, V.; Lukin, Mikhail D.

Note: Order does not necessarily reflect citation order of authors.

Citation: Tiecke, T. G., J. D. Thompson, N. P. de Leon, L. R. Liu, V. Vuletić, and M. D. Lukin. 2014. Nanophotonic Quantum Phase Switch with a Single Atom. Nature 508(7495): 241–244. doi:10.1038/nature13188.
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Abstract: By analogy to transistors in classical electronic circuits, quantum optical switches are important elements of quantum circuits and quantum networks1, 2, 3. Operated at the fundamental limit where a single quantum of light or matter controls another field or material system4, such a switch may enable applications such as long-distance quantum communication5, distributed quantum information processing2 and metrology6, and the exploration of novel quantum states of matter7. Here, by strongly coupling a photon to a single atom trapped in the near field of a nanoscale photonic crystal cavity, we realize a system in which a single atom switches the phase of a photon and a single photon modifies the atom’s phase. We experimentally demonstrate an atom-induced optical phase shift8 that is nonlinear at the two-photon level9, a photon number router that separates individual photons and photon pairs into different output modes10, and a single-photon switch in which a single ‘gate’ photon controls the propagation of a subsequent probe field11, 12. These techniques pave the way to integrated quantum nanophotonic networks involving multiple atomic nodes connected by guided light.
Published Version: doi:10.1038/nature13188
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13383563
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