Restoration of Entanglement by Spectral Filters
classification
🪐 quant-ph
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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