English

Detection of a persistent-current qubit by resonant activation

Mesoscale and Nanoscale Physics 2009-11-10 v1 Superconductivity
Authors: P. Bertet , I. Chiorescu , K. Semba , C. J. P. M Harmans , J. E. Mooij
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Abstract

We present the implementation of a new scheme to detect the quantum state of a persistent-current qubit. It relies on the dependency of the measuring Superconducting Quantum Interference Device (SQUID) plasma frequency on the qubit state, which we detect by resonant activation. With a measurement pulse of only 5ns, we observed Rabi oscillations with high visibility (65%).

Keywords

circuit quantum electrodynamics superconducting quantum interference devices

Cite

@article{arxiv.cond-mat/0405024,
  title  = {Detection of a persistent-current qubit by resonant activation},
  author = {P. Bertet and I. Chiorescu and K. Semba and C. J. P. M Harmans and J. E. Mooij},
  journal= {arXiv preprint arXiv:cond-mat/0405024},
  year   = {2009}
}

Comments

4 pages, 4 figures, submitted to PRB Rapid Com

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