International Business Machines Corporation

Frank Milliken, Jr

George Andrew Keefe

James Robert Rozen

Roger Hilsen Koch

Matthew J Farinelli

Inga Koch, Legal Representative

An apparatus and method for manufacturing a superconducting low-pass filter for quantum computing devices. The apparatus includes a plurality of containers and input and output ports connected to opposite ends of the apparatus. A plurality of coils of superconducting wire are wound using a mandrel. An adhesive is applied to the coils for maintaining a wound state. Each of the coils are positioned in each of the containers and electrically connected to each other with at least one coil being connected to the input port and at least one coil being connected to the output port. The coils are released or expanded from their wound state using an adhesive solvent. The containers are then filled with a conductive polymer and the containers are closed with one or more covers.

Method of manufacturing superconducting low pass filter for quantum computing

An improved persistent current switch design and method of operation are disclosed. By way of example, a persistent current switch circuit comprises a heating element and a switch element located proximate to the heating element, the switch element being substantially formed from a material (by way of example only, titanium) which exhibits a superconducting temperature value below a superconducting temperature value exhibited by a material (by way of example only, aluminum) used to provide a connection to the switch element. The switch element is responsive to the heating element such that the heating element is used to control whether or not the switch element is in a superconducting state. The switch element may also have a folded geometry. Such persistent current switches exhibit low power and low inductance.

Persistent current switch

A low pass filter having a coaxial structure of an inner conductor, an outer conductor and a metal powder composite interposed between the inner and outer conductor. Embodiments include a 50&#x3a9; characteristic impedance. The metal powder can be bronze, copper or other metals, mixed in an epoxy carrier.

Growing community of inventors

Tarrytown, NY, United States of America

Frank Milliken, Jr