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

8d. Now suppose we start with the qubit |ø(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 (è,ϕ) of this qubit on the Bloch sphere at time t, as a function of B and t?

è=?

ϕ=?

- quantum physics -
**quant**, Thursday, October 17, 2013 at 6:41pm
urgent help please...

## Answer This Question

## Related Questions

- quantum physics - Now suppose we start with the qubit |ø(0)⟩=|0⟩ ...
- quantum physics - 8d. Now suppose we start with the qubit |ø(0)⟩=|0&#...
- quantum physics - 8(a) Consider a spin qubit in the state 3ã2|0⟩+12|1&#...
- quantum mechanics - Suppose we have a qubit in the state |ψ⟩=12|0&#...
- Physics - A two-qubit system was originally in the state 34|00⟩−5&#...
- quantummechanics - The following circuit is designed for testing whether |u&#...
- Physics - Suppose we have a one-qubit unitary U that maps |0⟩ to 13|0&#...
- Physics - Suppose we have a one-qubit unitary U that maps |0⟩ to 12|0&#...
- Quantum Physics - Suppose we have two qubits in the state α|00⟩+&#...
- Physics - Alice and Bob share a state a|++⟩+b|−−⟩, ...

More Related Questions