Entanglement of flux qubits through a joint detection of photons

摘要

We study the entanglement creation between two flux qubitsinteracting With electromagnetic field modes. No direct inter-action between the qubits exists. Entanglement is reached us-ing the entanglement swapping method by an interference mea-surement performed on photons. We discuss the influence of off-resonance and multi-photon initial states on the qubit—qubitentanglement. The presented scheme is able to drive an initiallyseparable state of two qubits into an highly entangled state suit-able for quantum information processing.