US 12,147,874 B2
Quantum error correction code decoder and associated methods
Ben Andrew Barber, Cambridge (GB); Kenton Michael Barnes, Cambridge (GB); Kauser Yakub Johar, Cambridge (GB); and Luka Skoric, Cambridge (GB)
Assigned to RIVERLANE LTD, Cambridge (GB)
Filed by RIVERLANE LTD, Cambridge (GB)
Filed on Nov. 15, 2022, as Appl. No. 18/055,529.
Prior Publication US 2024/0160988 A1, May 16, 2024
Int. Cl. G06F 11/30 (2006.01); G06F 11/00 (2006.01); G06N 10/70 (2022.01)
CPC G06N 10/70 (2022.01) 18 Claims
OG exemplary drawing
 
1. A decoder apparatus for decoding syndromes of a quantum error correction code, the syndromes of the quantum error correction code comprising measurement data from a quantum computer, the quantum computer comprising an array of qubits including syndrome qubits and data qubits, the decoder apparatus configured to:
receive syndrome index data representative of:
a physical location of each of the array of qubits within the quantum computer; and
lattice dimensions of the array of qubits;
receive the syndromes of the quantum error correction code from the quantum computer;
determine physical co-ordinate positions for each of the array of qubits based on the syndrome index data;
decode the syndromes of the quantum error correction code using the determined physical co-ordinate positions; and
wherein:
the decoder apparatus has a first syndrome capacity for decoding the syndromes of the quantum error correction code; and
the syndromes of the quantum error correction code occupy a second syndrome capacity less than or equal to the first syndrome capacity of the decoder apparatus.