Four-junction superconducting circuit
Quantum Physics
2016-08-04 v2
Abstract
We develop a theory for the quantum circuit consisting of a superconducting loop interrupted by four Josephson junctions and pierced by a magnetic flux (either static or time-dependent). In addition to the similarity with the typical three-junction flux qubit in the double-well regime, we demonstrate the difference of the four-junction circuit from its three-junction analogue, including its advantages over the latter. Moreover, the four-junction circuit in the single-well regime is also investigated. Our theory provides a tool to explore the physical properties of this four-junction superconducting circuit.
Keywords
Cite
@article{arxiv.1602.00072,
title = {Four-junction superconducting circuit},
author = {Yueyin Qiu and Wei Xiong and Xiao-Ling He and Tie-Fu Li and J. Q. You},
journal= {arXiv preprint arXiv:1602.00072},
year = {2016}
}
Comments
9 pages, 4 figures