1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I have been hanging on this problem for a long time without a solution

  1. Jul 9, 2007 #1
    I have been hanging on this problem for a long time without a solution!!

    Suppose we have a single qubit principal system ,interacting with a single qubit environment through the transformation
    U=P0[tex]\otimes[/tex]I+P1[tex]\otimes[/tex]X
    where X is the usual Pauli matrix (acting on the enviornment)and P0=|0><0| ,P1=|1><1| are projectors (acting on the system ).Give the quantum operation for this process ,in the operator-sum representation ,assuming the environment starts in the state |0>

    I have two problem about this exercise :
    1.how to represent the principal system
    2.how to find an orthonormal basis for the environment so that the operatior-sum representation can be arrived
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted



Similar Discussions: I have been hanging on this problem for a long time without a solution
Loading...