Superconducting qubits can be coupled and addressed as trapped ions

Details Superconducting qubits can be coupled and addressed as trapped ions Superconducting qubits can be coupled and addressed as trapped ions

2005-09-09

arxiv.org/abs/cond-mat/0509236v6

Phys. Rev. B 76, 144518 (2007)

Physics

Condensed Matter

Superconductivity

6 pages, 2 figures

Scientific paper

Exploiting the intrinsic nonlinearity of superconducting Josephson junctions, we propose a scalable circuit with superconducting qubits (SCQs) which is very similar to the successful one now being used for trapped ions. The SCQs are coupled to the "vibrational" mode provided by a superconducting LC circuit or its equivalent (e.g., a SQUID). Both single-qubit rotations and qubit-LC-circuit couplings/decouplings can be controlled by the frequencies of the time-dependent magnetic fluxes. The circuit is scalable since the qubit-qubit interactions, mediated by the LC circuit, can be selectively performed, and the information transfer can be realized in a controllable way.

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