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Restoration of Entanglement by Spectral Filters

K. Usami·Y. Nambu·S. Ishizaka·T. Hiroshima·Y. Tsuda·K. Matsumoto·K. Nakamura
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Abstract

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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K. Usami, Y. Nambu, S. Ishizaka, T. Hiroshima, Y. Tsuda, K. Matsumoto, K. Nakamura. 2001-07-24. Restoration of Entanglement by Spectral Filters. https://arxiv.org/abs/quant-ph/0107121

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