Patent ID: 11901915
Assignee: RIVERLANE LTD
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. An apparatus for decoding syndromes of a quantum error correction code, the apparatus comprising:
a plurality of block decoders;
a process manager configured to:
receive syndrome measurement data comprising a plurality of quantum error correction rounds performed on a plurality of qubits of a quantum computer;
identify a plurality of primary blocks of the syndrome measurement data, wherein neighbouring primary blocks are separated by interstitial blocks of quantum error correction rounds, each primary block comprising:
a first central block of quantum error corrections rounds; and
a first buffer block of quantum error correction rounds, wherein the first buffer block surrounds the first central block;

provide each one of the primary blocks to a respective block decoder of the plurality of block decoders and each one of the interstitial blocks to a respective block decoder of the plurality of block decoders,

wherein each respective block decoder provided with a respective primary block is configured to:
identify the location of errors in the plurality of qubits by decoding the respective primary block to provide a respective decoded first central block and a respective decoded first buffer block;
provide the location of the errors in the respective decoded first central block to an output;
provide at least a first part of the respective decoded first buffer block to the respective block decoder with the particular interstitial block immediately preceding the respective primary block;
provide at least a second part of the decoded first buffer block to the respective block decoder with the particular interstitial block immediately succeeding the respective primary block.