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arXiv · 0802.1469

Fully-connected network of superconducting qubits in a cavity

D. I. Tsomokos·S. Ashhab·F. Nori
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Abstract

A fully-connected qubit network is considered, where every qubit interacts with every other one. When the interactions between the qubits are homogeneous, the system is a special case of the finite Lipkin-Meshkov-Glick model. We propose a natural implementation of this model using superconducting qubits in state-of-the-art circuit QED. The ground state, the low-lying energy spectrum and the dynamical evolution are investigated. We find that, under realistic conditions, highly entangled states of Greenberger-Horne-Zeilinger and W types can be generated. We also comment on the influence of disorder on the system and discuss the possibility of simulating complex quantum systems, such as Sherrington-Kirkpatrick spin glasses, with superconducting qubit networks.

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D. I. Tsomokos, S. Ashhab, F. Nori. 2008-10-20. Fully-connected network of superconducting qubits in a cavity. https://doi.org/10.1088/1367-2630%2F10%2F11%2F113020

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