cirq.google.SYC = cirq.google.SYC

The Sycamore gate is a two-qubit gate equivalent to FSimGate(π/2, π/6).

The unitary of this gate is

[[1, 0, 0, 0],
[0, 0, -1j, 0],
[0, -1j, 0, 0],
[0, 0, 0, exp(- 1j * π/6)]]

This gate can be performed on the Google’s Sycamore chip and
is close to the gates that were used to demonstrate quantum
supremacy used in this paper: