IQI Weekly Seminar

Series: Institute for Quantum Information (IQI) Weekly Seminar Series

Flag fault-tolerant error correction for arbitrary distance codes

Christopher Chamberland, Institute for Quantum Computing/University of Waterloo,

Abstract: Several fault-tolerant error correction (EC) protocols have been proposed such as Steane, Shor and Knill EC, each have advantages that depend on certain factors. Recently, Chao and Reichardt proposed a flag-based scheme for performing fault-tolerant EC only applicable to certain distance-three codes while only using two ancilla qubits [1]. Building on their work, I will present a new fault-tolerant EC protocol which is applicable to arbitrary distance codes that satisfy a certain condition while reducing the required number of ancilla qubits. The proposed protocol could be practicable for near term experiments that demonstrate fault-tolerance. Furthermore, we believe our work has potential applications for large quantum computations which use quantum low density parity check (LDPC) codes for protecting against noise.

[1] R. Chao and B.W. Reichardt, "Quantum error correction with only two extra qubits", arXiv:quant-ph/1705.02329, (2017).

The arXiv link for the paper on which my talk is based on is https://arxiv.org/abs/1708.02246

For more information, please contact Bonnie Leung by phone at 626.395.4964 or by email at [email protected].