• Entanglement of distant superconducting quantum interference device rings

      Konstadopoulou, Anastasia; Vourdas, Apostolos; Migliore, R.; Ahmad Zukarnain, Z.; Messina, A. (2005)
      We consider two distant mesoscopic SQUID rings, approximated with two-level systems, interacting with two-mode microwaves. The Hamiltonian of the system is used to calculate its time evolution. The cases with microwaves which at t = 0 are in separable states (classically correlated) or entangled states (quantum mechanically correlated) are studied. It is shown that the Josephson currents in the two SQUID rings are also correlated.