Low-power biasing networks for superconducting integrated circuits
AssigneeHypres, Inc.
InventorsOleg A. Mukhanov, Alexander F. Kirichenko, Dmitri Kirichenko
Life of this patent
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Abstract
A superconducting integrated circuit, comprising a plurality of superconducting circuit elements, each having a variation in operating voltage over time; a common power line; and a plurality of bias circuits, each connected to the common power line, and to a respective superconducting circuit element, wherein each respective bias circuit is superconducting during at least one time portion of the operation of a respective superconducting circuit element, and is configured to supply the variation in operating voltage over time to the respective superconducting circuit element.
Claims28
A superconducting integrated circuit, comprising:
- a plurality of superconducting circuit elements, each having a variation in operating voltage over time;
- a common power line;
- and
- a plurality of bias circuits, each connected to the common power line, and to a respective superconducting circuit element, wherein each respective bias circuit is superconducting during at least one time portion of the operation of a respective superconducting circuit element, and is configured to supply the variation in operating voltage over time to the respective superconducting circuit element.
A superconducting integrated circuit, comprising:
- a plurality of superconducting circuit elements, each having at least two different states, which are reflected as a variation in operating voltage over time;
- a common power line;
- and
- a plurality of current bias circuits, each connected to the common power line, and to a respective superconducting circuit element, wherein the current bias circuit has superconducting resistance during at least one state of a respective superconducting circuit element, and is configured to supply a substantially constant current to the respective superconducting circuit element during the at least two different states,
- wherein the constant current in one of said current bias circuits is decoupled from a constant current in another one of said current bias circuits.
A method of biasing a superconducting integrated circuit, having a common power line, a plurality of bias circuits connected to the common power line, and a plurality of superconducting circuit elements, each biased by a respective bias circuit, each having a variation in operating voltage over time, comprising:
- supplying the variation in operating voltage over time to the respective superconducting circuit element with the respective bias circuit;
- and
- operating each bias circuit in a lossless mode during at least one time portion of the operation of a respective superconducting circuit element.
Dependencies are inferred from the claim text.