Quantum circuit with Josephson multipole isolator
US12317755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2021 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Oct 29, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One or more systems, devices, methods of use and/or methods of fabrication provided herein relate to a device that can facilitate qubit measurement with isolation imposed between a quantum processor and a respective qubit measurement circuit and/or which respective qubit measurement circuit can have a small footprint, such as within a respective cryogenic chamber of a quantum system. According to one embodiment, a device comprises an isolator circuit having a bandpass filter configuration coupled between a pair of ports and the bandpass filter configuration comprising two or more poles. Two or more shunt resonators can be realized as the two or more poles, wherein the two or more shunt resonators can comprise DC SQUIDs and can be coupled together with one or more admittance inverters. A non-reciprocal signal transmission can be generated between the two ports by RF pumping the DC SQUIDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.