24 October 2016 Quantum operations on entangled photons using Lyot filters
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Abstract
Lyot filters have been designed for multi-access high capacity wavelength division multiplexing between a communications hub and spatially separated spokes. Reported here are modifications to a basic classical communications Lyot filter stage [1], but using a hyper-entangled bipartite input state possessing non-degenerate frequencies for advanced quantum communications. Lyot filters and pre-shared linking knowledge can be used to better ensure efficiency and efficacy in manifesting entanglement correlations between polarization degrees of freedom in non-rotationally invariant measurement bases. Lyot filters also allow entangled photon routing, a function of entanglement between incident frequencies and polarization.
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David H. Hughes, Reinhard K. Erdmann, Vladimir V. Nikulin, "Quantum operations on entangled photons using Lyot filters", Proc. SPIE 9996, Quantum Information Science and Technology II, 99960H (24 October 2016); doi: 10.1117/12.2241335; https://doi.org/10.1117/12.2241335
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