cirq.three_qubit_matrix_to_operations

Returns operations for a 3 qubit unitary.

cirq.three_qubit_matrix_to_operations(
    q0: cirq.Qid,
    q1: cirq.Qid,
    q2: cirq.Qid,
    u: np.ndarray,
    atol: float = 1e-08
) -> Sequence[cirq.Operation]

The algorithm is described in Shende et al.: Synthesis of Quantum Logic Circuits. Tech. rep. 2006, https://arxiv.org/abs/quant-ph/0406176

Args
`q0`	first qubit
`q1`	second qubit
`q2`	third qubit
`u`	unitary matrix
`atol`	A limit on the amount of absolute error introduced by the construction.

Returns
The resulting operations will have only known two-qubit and one-qubit gates based operations, namely CZ, CNOT and rx, ry, PhasedXPow gates.

Raises
`ValueError`	If the u matrix is non-unitary or not of shape (8,8).
`ImportError`	If the decomposition cannot be done because the SciPy version is less than 1.5.0 and so does not contain the required `cossin` method.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2024-06-27 UTC.

cirq.three_qubit_matrix_to_operations

Args

Returns

Raises