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Understanding the Matrices of Quantum Logic Gates

  1. Dec 29, 2012 #1
    (I am not sure if this is the right section for this).

    This question probably is extremely trivial and silly, but I haven't been able to find the answer to it despite going through quite a bit of The Internet.

    So, it appears that each Quantum Logic Gate corresponds to a matrix. Ones that interact with one qubit are 2 x 2, two qubits 4 x 4. The problem is, I have no clue what on earth these matrices do and how they correspond to the gates. Do you multiply them by something? If so, what is that something?
     
  2. jcsd
  3. Jan 3, 2013 #2
    I haven't delved into the subject but If you want to really understand them you should work your way through the following lecture notes:

    http://www.theory.caltech.edu/people/preskill/ph229/#lecture

    My impression is that any type of summary articles (such as Wikipedia) will be too brief to get much understanding.
     
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