Experimental demonstration of quantum algorithms on a 4-qubit/5-resonator quantum microprocessor utilizing superconducting qubits in the RezQu architecture

We present our newly designed and fabricated 4-qubit/5-resonator quantum microprocessor composed of ``off-the-shelf" qubit and resonator components in the RezQu (``rez-(,)kyoo") architecture. The RezQu architecture uses resonators with qubits in the zero state to turn off stray coupling. Each qubit is coupled to a $\lambda /4$ memory resonator and coupling between the qubits is mediated by a common $\lambda /2$ resonator bus. Eight microwave lines drive the individual qubits, memory resonators, and coupling resonator. We demonstrate control over the quantum microprocessor via small scale quantum algorithms that require executing high- fidelity single qubit gates, quantum Fourier transform, Toffoli, CNOT, and other entangling gates.