Patent ID: 6348699
Filing Date: 2002-02-19
Classification: H01L

Abstract:
A Josephson junction array device, comprised of a substrate, a superconducting thin film, deposited on that substrate and containing a sequence of layers typical in a series array of vertically stacked Josephson junctions, comprising:a superconducting mesa structure or structures on top of, or fabricated out of said superconducting thin film, electrical bottom and top contacts and means for applying an electrical voltage or current to the electrodes, characterized in that the mesas are monolithically integrated between superconducting electrical end contacts on either side, and that means are provided for any partial number of those superconducting mesas being combined in groups for interconnection and control purposes; a linear or two-dimensional lateral array of at least 2 to several thousand columns in parallel connection, each of said columns containing 2 to 2000 vertically stacked Josephson junctions, between common superconducting base and top contacts, with means for connecting to a controllable current source such that the Josephson junctions are driven into the ac (emitting) regime; wherein the top contact is split in three or more segments with means for connecting to a controllable current source such that a series connection of three or more segments with parallel connected columns is achieved; and wherein a distributed array of series connected Tunneltron segments is formed, placed at wavelength intervals along a serpentine microstrip transmission line for higher power output.