Patent ID: 8611974
Filing Date: 2013-12-17
Classification: B82Y,G06N,H03K

Abstract:
1. A superconducting demultiplexer comprising: a plurality of switching cells that includes a lead switching cell, a first set of switching cells, and a second set of switching cells, wherein each switching cell in the plurality of switching cells comprises: a signal input end, a first signal output end and a second signal output end; a first Josephson transmission line having a first end and a second end, wherein the first end of the first Josephson transmission line is coupled to the signal input end; a second Josephson transmission line having a first end and a second end, wherein the first end of the second Josephson transmission line is coupled to the first signal output end and the second end of the second Josephson transmission line is coupled to the second output end, and wherein the second end of the first Josephson transmission line is coupled to the second Josephson transmission line at an intersection node; and a flux bias line that is positioned to inductively couple signals to both a first node and a second node on the second Josephson transmission line, wherein the first node on the second Josephson transmission line is located in between the intersection node and the first output end, and wherein the second node on the second Josephson transmission line is located in between the intersection node and the second output end; wherein the input end of the lead switching cell is configured to receive signals from an input signal source, the first output end of the lead switching cell is coupled to the input end of a first switching cell from the first set of switching cells, the second output end of the lead switching cell is coupled to the input end of a second switching cell from the first set of switching cells, the first and the second output ends of both the first and the second switching cells in the first set of switching cells are each coupled to the input end of another respective switching cell in the first set of switching cells, and wherein the input end of each switching cell in the second set of switching cells is coupled to a respective output end of a switching cell in the first set of switching cells.