Input/output systems and devices for use with superconducting devices

摘要

Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable.

主权项

1. An electrical filter device for use with differential signals, the electrical filter device comprising:
a first superconducting signal path, wherein the first superconducting signal path includes a first coil of superconductive wire; a first capacitor that capacitively couples the first superconducting signal path to a ground; a second superconducting signal path, wherein the second superconducting signal path includes a second coil of superconductive wire that is wound about the first coil of superconductive wire to form a first top-bottom coil pair; a second capacitor that capacitively couples the second superconducting signal path to the ground; and means for changing a coiling direction of at least one of the first coil of superconductive wire and/or the second coil of superconductive wire.