IQI Weekly Seminar
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 . 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.
 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