title: Efficient scheme for hybrid teleportation via entangled coherent states in circuit quantum electrodynamics.
abstract: We propose a deterministic scheme for teleporting an unknown qubit state through continuous-variable entangled states in superconducting circuits. The qubit is a superconducting two-level system and the bipartite quantum channel is a microwave photonic entangled coherent state between two cavities. A Bell-type measurement performed on the hybrid state of solid and photonic states transfers a discrete-variable unknown electronic state to a continuous-variable photonic cat state in a cavity mode. In order to facilitate the implementation of such complex protocols we propose a design for reducing the self-Kerr nonlinearity in the cavity. The teleporation scheme enables quantum information processing operations with circuit-QED based on entangled coherent states. These include state verification and single-qubit operations with entangled coherent states. These are shown to be experimentally feasible with the state of the art superconducting circuits.
authors.affiliation: Advanced Technology Institute and Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom.|School of Computational Sciences, Korea Institute for Advanced Study, Seoul 02455, South Korea.
authors.forename: Jaewoo
authors.initials: J
authors.lastname: Joo
authors.affiliation: Advanced Technology Institute and Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom.
authors.forename: Eran
authors.initials: E
authors.lastname: Ginossar