Selective coupling of superconducting charge qubits mediated by a tunable stripline cavity
M. Wallquist, V. S. Shumeiko, G. Wendin
DOI 10.1103/PhysRevB.74.224506 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We theoretically investigate selective coupling of superconducting charge qubits mediated by a superconducting stripline cavity with a tunable resonance frequency. The frequency control is provided by a flux-biased dc superconducting quantum interference device attached to the cavity. Selective entanglement of the qubit states is achieved by sweeping the cavity frequency through the qubit-cavity resonances. The circuit is able to accommodate several qubits and allows one to keep the qubits at their optimal points with respect to decoherence during the whole operation. We derive an effective quantum Hamiltonian for the basic, two-qubit-cavity system, and analyze appropriate circuit parameters. We present a protocol for performing Bell inequality measurements, and discuss a composite pulse sequence generating a universal control-phase gate.
Similar papers
Generalized switchable coupling for superconducting qubits using double resonance
similarity 0.92S. Ashhab et al.
Source status unknown — claims are unverified
Parametric coupling for superconducting qubits
similarity 0.91P. Bertet et al.
Source status unknown — claims are unverified
Tunable and switchable coupling between two superconducting resonators
similarity 0.90A. Baust et al.
Source status unknown — claims are unverified
Unified approach for universal quantum gates in a coupled superconducting two-qubit system with fixed always-on coupling
similarity 0.90Zhongyuan Zhou et al.
Source status unknown — claims are unverified
Variable-frequency-controlled coupling in charge qubit circuits: Effects of microwave field on qubit-state readout
similarity 0.89Xiao-Ling He et al. · 2007 · arXiv:quant-ph/0703147
Source status unknown — claims are unverified
Universal Nonadiabatic Control of Small-Gap Superconducting Qubits
similarity 0.89Daniel L. Campbell et al.
Source status unknown — claims are unverified