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Use of ancillary bits in quantum computing

  1. May 21, 2014 #1
    How is an ancillary bit used in a logic gate? I looked at

    http://en.wikipedia.org/wiki/Ancilla_(quantum_computing [Broken])

    as well as Quantum Computation and Quantum Information by Nielsen and Chuang, but neither source really explained how an ancillary bit is used (in a logic gate circuit) or why it is needed. I looked at several other sites and books, but I've found that each source immediately started talking about ancillary bits without first explaining them.

    Thanks.
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. May 21, 2014 #2

    Bill_K

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    Did you look in this reference? It gives a step-by-step example showing how ancillary bits may be used for error correction.
     
  4. May 23, 2014 #3
    Thanks! The book was extremely helpful.
     
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