Role of anomalous symmetry in 0-$\pi$ qubits
Quantum Physics
2022-05-05 v2 Superconductivity
High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
We present an exact full symmetry analysis of the 0- superconducting circuit. We identify points in control parameter space of enhanced anomalous symmetry, which imposes robust twofold degeneracy of its ground state, that is for all values of the energy parameters of the model. We show, both analytically and numerically, how this anomalous symmetry is maintained in the low-energy sector, thus providing us with a strong candidate for robust qubit engineering.
Keywords
Cite
@article{arxiv.2109.11824,
title = {Role of anomalous symmetry in 0-$\pi$ qubits},
author = {I. L. Egusquiza and A. Iñiguez and E. Rico and A. Villarino},
journal= {arXiv preprint arXiv:2109.11824},
year = {2022}
}
Comments
23 pages, 3 figures. Published version