Circuit QED and sudden phase switching in a superconducting qubit array
Quantum Physics
2010-12-10 v1 Mesoscale and Nanoscale Physics
Abstract
Superconducting qubits connected in an array can form quantum many-body systems such as the quantum Ising model. By coupling the qubits to a superconducting resonator, the combined system forms a circuit QED system. Here, we study the nonlinear behavior in the many-body state of the qubit array using a semiclassical approach. We show that sudden switchings as well as a bistable regime between the ferromagnetic phase and the paramagnetic phase can be observed in the qubit array. A superconducting circuit to implement this system is presented with realistic parameters .
Cite
@article{arxiv.1003.2006,
title = {Circuit QED and sudden phase switching in a superconducting qubit array},
author = {L. Tian},
journal= {arXiv preprint arXiv:1003.2006},
year = {2010}
}
Comments
4 pages, 3 figures, submitted for publication.