Demonstration of entangling gate for all-to-all connected superconducting qubits

Exploring highly connected networks of qubits is invaluable for implementing various quantum codes and simulations. All-to-all connectivity allows for entangling qubits with reduced gate depth. In the ion community, the Mølmer-Sørensen gate is routinely used to entangle over a dozen qubits with high fidelity. We report on the observed fidelity for a Mølmer-Sørensen-like interaction through the use of shared coplanar waveguide (CPW) resonators to couple multiple superconducting qubits. This gate allows us to selectively entangle any subset of the qubits coupled to the shared resonator.