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Restoration of Entanglement by Spectral Filters

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arxiv quant-ph/0107121 v1 pith:VE2HZ3VQ submitted 2001-07-24 quant-ph

K. Usami , Y. Nambu , S. Ishizaka , T. Hiroshima , Y. Tsuda , K. Matsumoto , K. Nakamura This is my paper · ORCID
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keywords entanglementfiltersrestorationspectralancillarybi-photonclassdegree
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We experimentally demonstrate that entanglement of bi-photon polarization state can be restored by spectral filters. This restoration procedure can be viewed as a new class of quantum eraser, which retrieves entanglement rather than just interference by manipulating an ancillary degree of freedom.

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