- #1
maxverywell
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Is it possible to have a unitary evolution from ##|\psi_1\rangle\to a |\psi_1\rangle+b |\psi_2\rangle##, where ##|\psi_1\rangle##, ##|\psi_2\rangle## are two orthogonal states of a system?
What if the state of the system is time dependent state of the form ##|\psi (t)\rangle = c_1(t) |\psi_1\rangle+c_2(t) |\psi_2\rangle##. Is it possible to have initial conditions ##c_1 (0)=1## and ##c_2 (0)=0## and at a later time t>0 get ##c_1 (t)\neq0## and ##c_2 (t)\neq0##?
What if the state of the system is time dependent state of the form ##|\psi (t)\rangle = c_1(t) |\psi_1\rangle+c_2(t) |\psi_2\rangle##. Is it possible to have initial conditions ##c_1 (0)=1## and ##c_2 (0)=0## and at a later time t>0 get ##c_1 (t)\neq0## and ##c_2 (t)\neq0##?
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