cirq_google.ops.WILLOW

The Willow gate is a two-qubit gate equivalent to FSimGate(π/2, π/9).

The unitary of this gate is simulated as:

[[1, 0, 0, 0],
 [0, 0, -1j, 0],
 [0, -1j, 0, 0],
 [0, 0, 0, exp(- 1j * π/9)]]

This gate can be performed on the Google's Willow chip. Note that this gate will be transformed to a "ISWAP-like" gate on hardware and that the C-phase value (phi) may change from processor to processor. The specified value is provided only for simulation purposes.