2 research outputs found
Entanglement of qubits via a nonlinear resonator
Coherent coupling of two qubits mediated by a nonlinear resonator is studied.
It is shown that the amount of entanglement accessible in the evolution depends
both on the strength of nonlinearity in the Hamiltonian of the resonator and on
the initial preparation of the system. The created entanglement survives in the
presence of decoherence.Comment: 6 pages, 10 figure
Entanglement of distant flux qubits mediated by non-classical electromagnetic field
The mechanism for entanglement of two flux qubits each interacting with a
single mode electromagnetic field is discussed. By performing a Bell state
measurements (BSM) on photons we find the two qubits in an entangled state
depending on the system parameters. We discuss the results for two initial
states and take into consideration the influence of decoherence.Comment: 20 pages, 8 figure