Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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.

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


    User Avatar
    Science Advisor

    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.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook