Author(s): WANG Yi-Min~* and LI Cheng-Zu Department of Physics, National University of Defense Technology, Changsha 410073, China
Pages: 190-194
Year: 2010 Issue:  1
Journal: Communications in Theoretical Physics
Keyword:  charge qubit;  cluster state;  circuit QED;
Abstract: <正> We propose theoretical schemes to generate highly entangled cluster state with superconducting qubitsin a circuit QED architecture. Charge qubits are located inside a superconducting transmission line, which serves asa quantum data bus. We show that large dusters state can be efficiently generated in just one step with the longrangeIsing-like unitary operators. The quantum operations which are generally realized by two coupling mechanisms:either voltage coupling or current coupling, depend only on global geometric features and are insensitive not only to thethermal state of the transmission line but also to certain random operation errors. Thus high-fidelity one-way quantumcomputation can be achieved.