Superconducting quantum interference devices and uses thereof
AssigneeMicrosoft Technology Licensing, LLC
InventorsGijsbertus De Lange, Jaap Joachim Wesdorp
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Abstract
A system comprises a substrate having a planar surface; a first magnet configured to apply a first magnetic field parallel to the planar surface; a circuit arranged on the planar surface; and a superconducting quantum interference device, SQUID, operably linked to the circuit. The SQUID comprises a Josephson junction arranged in a superconductive loop. The superconductive loop includes a portion which extends perpendicular to the planar surface and is orientated such that the SQUID is tuneable by the first magnet. By allowing the SQUID to be tuned using a magnetic field which is parallel to the planar surface, a reduction in flux noise may be achieved. Also provided are a method of operating a SQUID, and a SQUID.
Claims20
A system comprising:
- a substrate having a planar surface;
- a first magnet configured to apply a first magnetic field parallel to the planar surface;
- a circuit arranged on the planar surface;
- and
- a superconducting quantum interference device, SQUID, operably linked to the circuit,
- wherein the SQUID comprises a Josephson junction arranged in a superconductive loop;
- and
- wherein the superconductive loop includes a portion which extends perpendicular to the planar surface and is orientated such that the SQUID is tuneable by the first magnet.
A method of operating a superconducting quantum interference device, SQUID, wherein the SQUID is operably linked to a circuit arranged on a planar surface of a substrate, wherein the SQUID comprises a Josephson junction arranged in a superconductive loop, and wherein the superconductive loop includes a portion which extends perpendicular to the planar surface, the method comprising:
- cooling the SQUID to an operating temperature;
- and
- tuning the SQUID by applying a first magnetic field in a direction parallel to the planar surface and through the superconductive loop.
A superconducting quantum interference device, SQUID, wherein the SQUID is arranged on a substrate and comprises:
- a Josephson junction arranged in a superconductive loop;
- and
- a support member having a top surface and a bottom surface;
- wherein the superconductive loop comprises a bottom portion arranged between a planar surface of the substrate and a bottom surface of the support member, a top portion arranged on a top surface of the support member, and two connecting portions connecting the bottom portion and the top portion, wherein the connecting portions extend in a direction perpendicular to the planar surface of the substrate.
Dependencies are inferred from the claim text.