Error correction for entangled quantum states
US9286154B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Mar 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1148
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory system comprising a qubit array configured to store therein and read one or more entangled qubit states encoded using a quantum stabilizer code. The quantum-memory system further comprises a quantum-state-refresh module configured to change an entangled qubit state in the qubit array when an error is detected therein. The quantum-state-refresh module is configured to detect an error by performing a redundant measurement of a set of syndrome values corresponding to the quantum stabilizer code, with the redundant measurement being based on a block error-correction code. In one embodiment, the block error-correction code is a low-density generator-matrix code or a low-density parity-check code constructed using an EXIT-function optimization method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.