Rotating the Qubit State

Learn how we can rotate the qubit state and its implementation.

Probabilities of the rotated qubit state

We initialize our qubit with the state 0|0\rangle (line 4). Then, we apply the RyR_y gate on the qubit and pass as the first parameter the result of calling prob_to_angle with the probability value of 0.6 (line 13). The rest of the code remains unchanged.

In line 4, we initialize our qubit with the state 0|0\rangle. Then, we apply the RyR_y gate on the qubit and pass as the first parameter the result of calling prob_to_angle with the probability value of 0.6 in line 13. The rest of the code remains unchanged.

As a result, we see a 60%60\% chance to measure the qubit as the value 1. We have found an effective way to control the probabilities of measuring 0 and 1, respectively.

Let’s see what happens if we apply the RyR_y gate on a qubit in another state, for instance, in

+=0+12|+\rangle=\frac{|0\rangle+|1\rangle}{\sqrt{2}}.

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