cirq.EjectPhasedPaulis

class cirq.EjectPhasedPaulis(tolerance: float = 1e-08)

Pushes X, Y, and PhasedX gates towards the end of the circuit.

As the gates get pushed, they may absorb Z gates, cancel against other

X, Y, or PhasedX gates with exponent=1, get merged into measurements (as

output bit flips), and cause phase kickback operations across CZs (which can

then be removed by the EjectZ optimization).

__init__(tolerance: float = 1e-08) → None

Parameters:tolerance – Maximum absolute error tolerance. The optimization is permitted to simply drop negligible combinations of Z gates, with a threshold determined by this tolerance.

Methods

optimize_circuit(circuit)

Rewrites the given circuit to make it better.