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Please Compute Concurrence Whats wrong

  1. Oct 29, 2009 #1
    Please Compute Concurrence...Whats wrong!!!

    I have this rho matrix:

    rho=[0.001 0 0 0.125;0 0.499 -0.374 0;0 -0.374 0.499 0;0.125 0 0 0.001];


    Why the concurrence is different if you compute numerically (you can download programs for compute the concurrence in this sites:
    http://optics.szfki.kfki.hu/~toth/qubit4matlab.html
    http://www.dr-qubit.org/matlab.php

    And if you use the Ec. 26 of Eberly paper/ Optics comm 264 (2006) 393-397
     
  2. jcsd
  3. Oct 29, 2009 #2

    haushofer

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    Science Advisor

    Re: Please Compute Concurrence...Whats wrong!!!

    I'm afraid you'll have to put a little more effort in your post if you expect people to help you.
     
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