Decoding errors using quantum subspace expansion
US12261627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2023 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Sep 22, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems and apparatus for correcting a result of a quantum computation. In one aspect, a method includes selecting a quantum error correcting code for the quantum computation, wherein the quantum error correcting code is defined by multiple stabilizer generators; determining a set of symmetry operators, comprising: selecting a subset of the stabilizer generators, determining, for each selected stabilizer generator, a sum between an identity operator and the stabilizer generator, and multiplying the determined sums together to form a summation of terms, wherein each term in the summation is equal to a respective symmetry operator; measuring a projective correction of a physical observable over an output quantum state of the quantum computation using the determined set of symmetry operators, wherein the physical observable corresponds to the result of the quantum computation; and determining a corrected result of the quantum computation using the measured projective correction of the physical observable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.