Characterization of an entangled system of two superconducting qubits using a multiplexed capacitance readout
Mesoscale and Nanoscale Physics
2012-09-19 v2 Superconductivity
Abstract
We characterize a pair of Cooper-pair boxes coupled with a fixed capacitor using spectroscopy and measurements of the ground-state quantum capacitance. We use the extracted parameters to estimate the concurrence, or degree of entanglement between the two qubits. We also present a thorough demonstration of a multiplexed quantum capacitance measurement technique, which is in principle scalable to a large array of superconducting qubits.
Cite
@article{arxiv.0812.2503,
title = {Characterization of an entangled system of two superconducting qubits using a multiplexed capacitance readout},
author = {M. D. Shaw and J. F. Schneiderman and J. Bueno and B. S. Palmer and P. Delsing and P. M. Echternach},
journal= {arXiv preprint arXiv:0812.2503},
year = {2012}
}
Comments
8 pages, 5 figures. Replaced version includes one additional reference, and figures which are better suited to grayscale