Superconducting qubits can be coupled and addressed as trapped ions

Journal Article · Mon Oct 01 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.76.144518· OSTI ID:21052723

Yuxi, Liu; Wei, L F ^[1]; Johansson, J R ^[2]; Tsai, J S ^[1]; Nori, Franco ^[1]

---

1. CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012 (Japan)
2. Frontier Research System, Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198 (Japan)

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 superconducting quantum interference device). Both single-qubit rotations and qubit-LC-circuit couplings and/or 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.

• OSTI ID: 21052723
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 76, Issue 14; Other Information: DOI: 10.1103/PhysRevB.76.144518; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
INTEGRATED CIRCUITS
IONS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
NONLINEAR PROBLEMS
QUANTUM COMPUTERS
QUBITS
ROTATION
SQUID DEVICES
TIME DEPENDENCE
TRAPPING