Entangling gates using Josephson circuits coupled through non-classical microwaves

R. Migliore, ANASTASIA KONSTANTOPOULOU, A. Vourdas, T. P. Spiller, A. Messina

Research output: Contribution to journalArticle (journal)peer-review

13 Citations (Scopus)


A system consisting of two Josephson qubits coupled through a quantum monochromatic electromagnetic field mode of aresonant tank circuit is studied. It is shown that for certain values of the parameters, it can be used as an entangling gate,which entangles the two qubits whilst the electromagnetic field remains disentangled. The gate operates with decent fidelity to a √SWAP gate and could form the basis for initial experimental investigations of coupled superconducting qubits.
Original languageEnglish
Pages (from-to)67-72
Number of pages7
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Early online date22 Oct 2003
Publication statusPublished - 2003
Externally publishedYes


  • Quantum information
  • Quantum Computing
  • Entanglement
  • quantum non-locality
  • SQUIDs


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