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July 27, 2016

Homework Help: quantum physics

Posted by quant on Thursday, October 17, 2013 at 6:41pm.

8d. Now suppose we start with the qubit |(0)⟩=|0⟩ and we apply a magnetic field in the x^ direction at t=0. This corresponds to the Hamiltonian H=BX, where B is a constant and X is the usual bit flip gate. What are the coordinates (,ϕ) of this qubit on the Bloch sphere at time t, as a function of B and t?
=?
ϕ=?

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