56 citations · 204 across the 6 of their papers we have counts for
6 papers
Optimal correction of concatenated fault-tolerant quantum codes
Zachary W. E. Evans, Ashley M. Stephens
We present a method of concatenated quantum error correction in which improved classical processing is used with existing quantum codes and fault-tolerant circuits to more reliably…
Accuracy threshold for concatenated error detection in one dimension
A. M. Stephens, Z. W. E. Evans
Estimates of the quantum accuracy threshold often tacitly assume that it is possible to interact arbitrary pairs of qubits in a quantum computer with a failure rate that is indepen…
Message passing in fault tolerant quantum error correction
Z. W. E. Evans, A. M. Stephens
Inspired by Knill's scheme for message passing error detection, here we develop a scheme for message passing error correction for the nine-qubit Bacon-Shor code. We show that for t…
Deterministic optical quantum computer using photonic modules
A. M. Stephens, Z. W. E. Evans, S. J. Devitt +6
The optical quantum computer is one of the few experimental systems to have demonstrated small scale quantum information processing. Making use of cavity quantum electrodynamics ap…
Error correction optimisation in the presence of X/Z asymmetry
Z. W. E. Evans, A. M. Stephens, J. H. Cole +1
By taking into account the physical nature of quantum errors it is possible to improve the efficiency of quantum error correction. Here we consider an optimisation to conventional…
Asymmetric quantum error correction via code conversion
A. M. Stephens, Z. W. E. Evans, S. J. Devitt +1
In many physical systems it is expected that environmental decoherence will exhibit an asymmetry between dephasing and relaxation that may result in qubits experiencing discrete ph…