Memory system using a quantum convolutional code
US11544612B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2019 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Oct 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/611
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A memory system comprising a qubit array configured to store therein one or more entangled qubit states encoded using a quantum stabilizer code. The memory system further comprises a quantum-state-refresh module configured to refresh an entangled qubit state in the qubit array when a degradation error is detected therein. The quantum-state-refresh module is further configured to detect the degradation error by performing a redundant measurement of a set of syndrome values corresponding to the quantum stabilizer code. The redundant measurement is based on an error-correction code defined using the generator matrix of the quantum stabilizer code and a corresponding supplemental parity-check matrix. In an example embodiment, each of the generator and supplemental parity-check matrices has a respective inclined-stripe form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.