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arXiv · 1003.2006

Circuit QED and sudden phase switching in a superconducting qubit array

L. Tian
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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 .

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BibTeXRIS

L. Tian. 2010-03-10. Circuit QED and sudden phase switching in a superconducting qubit array. https://doi.org/10.1103/physrevlett.105.167001

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