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Local Conversion of Greenberger-Horne-Zeilinger States to Approximate W States | | P. Walther
; K.J. Resch
; A. Zeilinger
; | | Date: |
22 Jun 2005 | | Journal: | Phys. Rev. Lett. 94, 240501 (2005) | | Subject: | quant-ph | | Abstract: | Genuine 3-qubit entanglement comes in two different inconvertible types represented by the Greenberger-Horne-Zeilinger (GHZ) state and the W state. We describe a specific method based on local positive operator valued measures and classical communication that can convert the ideal N-qubit GHZ state to a state arbitrarily close to the ideal N-qubit W state. We then experimentally implement this scheme in the 3-qubit case and characterize the input and the final state using 3-photon quantum state tomography. | | Source: | arXiv, quant-ph/0506190 | | Services: | Forum | Review | PDF | Favorites | |
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