WM Keck Science
We describe the effects of disorder on the coherence properties of a 2 x 2 array of Josephson junctions (a "plaquette"). The disorder is introduced through variations in the junction characteristics. We show that the array will remain one-to-one frequency locked despite large amounts of the disorder, and determine analytically the maximum disorder that can be tolerated before a transition to a desynchronized state occurs. Connections with larger N x M arrays are also drawn.
Landsberg, A.S., Y.Braiman, and K. Wiesenfeld. "Disorder and Synchronization in a Josephson Junction Plaquette." Applied Physics Letters 67.13 (1995): 1935-1937. DOI:10.1063/1.114573