Asymmetric Flux Bias for Coupled Qubits to Observe Entangled States

We present a scheme of experiment to observe entangled states in coupled flux qubits. The results of simulation are shown for the energy levels, magnetic flux detected by a DC-SQUID and transition matrix elements as the flux bias is applied asymmetrically. Near the degeneracy point the ground state and the first excited state of the system are dominantly the symmetric and antisymmetric combination of --01¿ and --10¿ states, respectively. The simulation shows that the use of asymmetric flux bias is suited for the observation of the energy spectrum with resonant microwaves.