Systems, methods and apparatus for measuring magnetic fields
US9335385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2014 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0094
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.