# cirq.ThreeQubitDiagonalGate¶

class cirq.ThreeQubitDiagonalGate(diag_angles_radians: List[Union[float, sympy.core.basic.Basic]])[source]

A gate given by a diagonal 8x8 matrix.

__init__(diag_angles_radians: List[Union[float, sympy.core.basic.Basic]]) → None[source]

A three qubit gate with only diagonal elements.

This gate’s off-diagonal elements are zero and it’s on diagonal
elements are all phases.
Parameters

diag_angles_radians – The list of angles on the diagonal in radians. If these values are $(x_0, x_1, ldots , x_7)$ then the unitary has diagonal values $(e^{i x_0}, e^{i x_1}, ldots, e^{i x_7})$.