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Volumn 72, Issue 1, 2005, Pages

Erratum: Sufficient conditions for three-particle entanglement and their tests in recent experiments (Physical Review A (2005) 72:1 (014101))

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EID: 27144516460     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.72.014101     Document Type: Erratum
Times cited : (20)

References (13)
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  • 2
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    • Consequently, a mixed state is called biseparable (fully separable) if it is the mixture of pure biseparable (fully separable) states.
    • Consequently, a mixed state is called biseparable (fully separable) if it is the mixture of pure biseparable (fully separable) states.
  • 3
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  • 4
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    • PRLTAO 0031-9007 10.1103/PhysRevLett.94.060501
    • For a different proof see Geza Toth and Otfried Guhne, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.94.060501 94, 060501 (2005);
    • (2005) Phys. Rev. Lett. , vol.94 , pp. 060501
    • Toth, G.1    Guhne, O.2
  • 5
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    • quant-ph/0501020.
    • Geza Toth and Otfried Guhne, quant-ph/0501020.
    • Toth, G.1    Guhne, O.2
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  • 10
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    • PRLTAO 0031-9007 10.1103/PhysRevLett.88.230406
    • This can be proved as follows. Let us take 8 to be a 4-4 matrix in the usual Z(k) basis, with matrix elements 8 kl with k,l=1,2,3,4. Then 88\'a3\parv1'e2\'88\'a32=('e2\'9f\'a8X(1)X(2)'e2\'88\rquote Y(1)Y(2)'e2\'9f\'a9\ 'cf\'81)2+('e2\'9f\'a8X(1)Y(2)+Y(1)X(2)'e2\'9f\'a9\'cf\'81)2=16'cf\'8114'cf\ '8141'e2\'a9\'bd4. The last inequality is valid since 'e2\'88\'a3'cf\'8114'e2\ '88\'a3=\'e2\'88\'a3'cf\'8141'e2\'88\'a3'e2\'a9\'bd1 2 is required for physically meaningful density matrices. See also Eq. (3) of J. Uffink, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.88.230406 88, 230406 (2002).
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    • PLRAAN 1050-2947 10.1103/PhysRevA.65.042314
    • We note that in a long calculation using the fidelity criterion, K. Nagata, M. Koashi, and N. Imoto, proved that the experiment contained three-particle entanglement but without using the Mermin inequality: K. Nagata, M. Koashi, and N. Imoto, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.65. 042314 65, 042314 (2002);
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    • Nagata, K.1    Koashi, M.2    Imoto, N.3
  • 12
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    • as we have recently been informed in a calculation different from ours, K. Nagata, M. Koashi, and N. Imoto, also obtained the here presented bound for the Mermin inequality in an unpublished work to be found at http://www.qci.jst. go.jp/eqis02/program/abstract/poster11.pdf.
    • Nagata, K.1    Koashi, M.2    Imoto, N.3
  • 13
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    • PRLTAO 0031-9007 10.1103/PhysRevLett.89.260401
    • The bound, while not explicitly stated, can straightforwardly be obtained from K. Nagata, M. Koashi, and N. Imoto, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.89.260401 89, 260401 (2002).
    • (2002) Phys. Rev. Lett. , vol.89 , pp. 260401
    • Nagata, K.1    Koashi, M.2    Imoto, N.3


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