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What does it mean by having a quantum fidelity of 0.85?

  1. Mar 18, 2006 #1
    What does it mean by having a quantum fidelity of 0.85?
     
  2. jcsd
  3. Mar 19, 2006 #2
    The fidelity can be viewed as a meassurement of distance between quantum states. If the fidelity is close to one, the states are close.
     
  4. Mar 19, 2006 #3
    I still don't understand. What do you mean by close? Do you mean like how near one wavefunction say, A to resemble another wavefunction, say B?
    I stumbled on this paper on the arXiv: http://www.arxiv.org/abs/quant-ph/0406205
    that's how I got to know this term.
     
    Last edited: Mar 19, 2006
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