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arXiv · 0905.0074

An Entanglement Filter

Ryo Okamoto·Jeremy L. O'Brien·Holger F. Hofmann·Tomohisa Nagata·Keiji Sasaki·Shigeki Takeuchi
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Abstract

The ability to filter quantum states is a key capability in quantum information science and technology, in which one-qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi-qubit filters with qubit-qubit interactions. We demonstrated an optical entanglement filter that passes a pair of photons if they have the desired correlations of their polarization. Such devices have many important applications to quantum technologies.

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Ryo Okamoto, Jeremy L. O'Brien, Holger F. Hofmann, Tomohisa Nagata, Keiji Sasaki, Shigeki Takeuchi. 2009-05-01. An Entanglement Filter. https://doi.org/10.1126/science.1167182

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