cirq.dirac_notation

Returns the state vector as a string in Dirac notation.

cirq.dirac_notation(
    state_vector: np.ndarray,
    decimals: int = 2,
    qid_shape: Optional[Tuple[int, ...]] = None
) -> str

state_vector = np.array([1/np.sqrt(2), 1/np.sqrt(2)], dtype=np.complex64)
print(cirq.dirac_notation(state_vector))
0.71|0⟩ + 0.71|1⟩

Args
`state_vector`	A sequence representing a state vector in which the ordering mapping to qubits follows the standard Kronecker convention of numpy.kron (big-endian).
`decimals`	How many decimals to include in the pretty print.
`qid_shape`	specifies the dimensions of the qudits for the input `state_vector`. If not specified, qubits are assumed and the `state_vector` must have a dimension a power of two.

Returns
A pretty string consisting of a sum of computational basis kets and non-zero floats of the specified accuracy.

Raises
`ValueError`	If there is a shape mismatch between state_vector and qid_shape. Otherwise, when qid_shape is not mentioned and length of state_vector is not a power of 2.

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Last updated 2024-06-27 UTC.

Args