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 andis close to the gates that were used to demonstrate quantumsupremacy used in this paper:
- Args:theta: Swap angle on the
|10⟩subspace, in radians.Determined by the strength and duration of the XX+YYinteraction. Note: uses opposite sign convention to theiSWAP gate. Maximum strength (full iswap) is at pi/2.phi: Controlled phase angle, in radians. Determines how much the
|11⟩state is phased. Note: uses opposite sign convention tothe CZPowGate. Maximum strength (full cz) is at pi/2.