M. Grajcar^1,2, A. Izmalkov^1,3, S. H. W. van der Ploeg^1,4, S. Linzen¹, E. Il’ichev^1,*, Th. Wagner¹, U. Hübner¹, H.-G. Meyer¹, Alec Maassen van den Brink^5,†, S. Uchaikin^1,5, and A. M. Zagoskin^5,6,‡

• ¹Institute for Physical High Technology, P.O. Box 100239, D-07702 Jena, Germany
• ²Department of Solid State Physics, Comenius University, SK-84248 Bratislava, Slovakia
• ³Moscow Engineering Physics Institute (State University), Kashirskoe shosse 31, 115409 Moscow, Russia
• ⁴MESA+ Research Institute and Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
• ⁵D-Wave Systems Inc., 320-1985 W. Broadway, Vancouver, British Columbia, Canada V6J 4Y3
• ⁶Physics and Astronomy Department, The University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1

• ^*Electronic address: ilichev@ipht-jena.de
• ^†Electronic address: alec@dwavesys.com
• ^‡Currently at UBC; email address: zagoskin@physics.ubc.ca