cirq.sample_state_vector¶

cirq.
sample_state_vector
(state: numpy.ndarray, indices: List[int], repetitions: int = 1) → List[List[bool]][source]¶ Samples repeatedly from measurements in the computational basis.
Note that this does not modify the passed in state.
Parameters:  state – The multiqubit wavefunction to be sampled. This is an array of
2 to the power of the number of qubit complex numbers, and so
state must be of size
2**integer
. The state can be a vector of size2**integer
or a tensor of shape(2, 2, ..., 2)
.  indices – Which qubits are measured. The state is assumed to be supplied in big endian order. That is the xth index of v, when expressed as a bitstring, has the largest values that the 0th index.
 repetitions – The number of times to sample the state.
Returns: Measurement results with True corresponding to the
1⟩
state. The outer list is for repetitions, and the inner corresponds to measurements ordered by the input indices.Raises: ValueError
–repetitions
is less than one or size ofstate
is not a power of 2.IndexError
– An index fromindices
is out of range, given the number of qubits corresponding to the state.
 state – The multiqubit wavefunction to be sampled. This is an array of
2 to the power of the number of qubit complex numbers, and so
state must be of size