Malis, M.Barkoutsos, P. KlGanzhorn, M.Filipp, S.Egger, D. J.Bonella, S.Tavernelli, I2019-06-182019-06-182019-06-182019-05-1010.1103/PhysRevA.99.052316https://infoscience.epfl.ch/handle/20.500.14299/157467WOS:000467717800005In this work, we develop a method to design control pulses for fixed-frequency superconducting qubits coupled via tunable couplers based on local control theory, an approach commonly employed to steer chemical reactions. Local control theory provides an algorithm that only requires a single forward time propagation of the system wave function to shape an external pulse that monotonically increases the population of a desired final state of a quantum system given an initial state. The method can serve as a starting point for additional refinements that lead to new pulses with improved properties. Among others, we propose an algorithm to design pulses that transfer population in a reversible manner between given initial and final states of coupled fixed-frequency superconducting qubits.OpticsPhysics, Atomic, Molecular & ChemicalPhysicsdynamicstext::journal::journal article::research article