Pushing back the limits of quantum error correction codes

Polar codes, invented in 2009, are a particularly promising breed of error correction code with a wide range of potential uses. The codes were used in a PhD research project at CEA-Leti and Grenoble computer science lab LIGLAB to develop quantum-specific polar codes.
In this research, the polar quantum error correction codes corrected noise (represented as a quantum channel) induced by the interactions between the qubits and their environment. The codes developed perform at the theoretical limit of redundancy specific to quantum channels.
They can also address one of the major challenges of the coming years, which is error-correcting codes for computing, a much more complex process that will require fault-tolerant implementation of the codes.

Contact: camille.giroud@cea.fr

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