Theerapat Tansuwannont

Sep 11, 2024 | link.aps.org | Balint Pato |Theerapat Tansuwannont |Kenneth Brown

A fault-tolerant error correction (FTEC) protocol with a high error suppression rate and low overhead is very desirable for the near-term implementation of quantum computers. In this work, we develop a distance-preserving flag FTEC protocol for the concatenated Steane code, which requires only two ancilla qubits per generator and can be implemented on a planar layout. We generalize the weight-parity error correction (WPEC) technique from Tansuwannont and Leung [Phys. Rev.

May 16, 2024 | link.aps.org | Theerapat Tansuwannont |Shilin Huang |Kenneth Brown |Balint Pato

Popular Summary Flag fault-tolerant quantum error correction (FTQEC) is a method to suppress error rate in quantum computation that uses a small number of ancilla qubits to detect faults in the error-correction protocol. One way to guarantee the number of correctable faults is using a lookup table decoder, but building it requires exhaustive search and may not scale well with the code size.

May 31, 2023 | arxiv.org | Theerapat Tansuwannont

The quantum Hamming bound was originally put forward as an upper bound on the parameters of nondegenerate quantum codes, but over the past few decades much work has been done to show that many degenerate quantum codes must also obey this bound.