Physical Review Letters
Publisher's Note: Evidence for Entangled States of Two Coupled Flux Qubits [Phys. Rev. Lett.93, 037003 (2004)]
A. Izmalkov, M. Grajcar, E. V. Il’ichev, Th. Wagner, H.‐G. Meyer, Anatoly Yu. Smirnov, M. H. S. Amin, Alec Maassen van den Brink, Alexandre M. Zagoskin