Random Measurement Bases, Distinguishing Quantum States and Applications to the Hidden Subgroup Problem

Date/Time: 22 June 2005 - ()

Speaker: Pranab Sen (NEC Labs America)

Consider the following state distinciton problem in quantum information: There is a known ensemble of quantum states i.e. density matrices. We are given some number of independent copies of one of these states. By doing individual measurements on each copy, we would like to determine with high probability which state is given. An important special case is when the ensemble consists of pure states.