a. Prove that the time evolution of the density operator ? (in the Schrodinger picture) is given
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a. Prove that the time evolution of the density operator ? (in the Schrodinger picture) is given by
b. Suppose we have a pure ensemble at t = 0. Prove that it cannot evolve into a mixed ensemble as long as the time evolution is governed by the Schrodinger equation.
Transcribed Image Text:
P(t) = (1, 1,)p(to)U*(1,1,).
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