Fully connected network of superconducting qubits in a cavity

Dimitris I. Tsomokos, Sahel Ashhab, Franco Nori

Research output: Contribution to journalArticle

37 Citations (Scopus)


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 (LMG) 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 (GHZ) 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 (SK) spin glasses, with superconducting qubit networks.

Original languageEnglish
Article number113020
JournalNew Journal of Physics
Publication statusPublished - 14 Nov 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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