  The recent experimental evidence for entangled states of two Josephson
junction qubits is briefly discussed. It is argued that the interpretation of
the experimental data strongly depends on the assumed theoretical model.
Namely, the qubit states are supposed to be the lowest lying eigenstates of a
certain effective Hamiltonian and hence automatically orthogonal, while the
simple analysis within a more fundamental many-particle model shows that those
states should strongly overlap. This makes the standard interpretation of the
measurement procedure questionable.
