231 citations · 1.7k across the 53 of their papers we have counts for
5 papers · 2 filters
Quantum memories and error correction
James R. Wootton
Quantum states are inherently fragile, making their storage a major concern for many practical applications and experimental tests of quantum mechanics. The field of quantum memori…
Lifetime of topological quantum memories in thermal environment
Abbas Al-Shimary, James R. Wootton, Jiannis K. Pachos
Here we investigate the effect lattice geometry has on the lifetime of two-dimensional topological quantum memories. Initially, we introduce various lattice patterns and show how t…
Effective quantum memory Hamiltonian from local two-body interactions
Adrian Hutter, Fabio L. Pedrocchi, James R. Wootton +1
In [Phys. Rev. A 88, 062313 (2013)] we proposed and studied a model for a self-correcting quantum memory in which the energetic cost for introducing a defect in the memory grows wi…
Self-correcting quantum memory with a boundary
Adrian Hutter, James R. Wootton, Beat Röthlisberger +1
We study the two-dimensional toric code Hamiltonian with effective long-range interactions between its anyonic excitations induced by coupling the toric code to external fields. It…
High threshold error correction for the surface code
James R. Wootton, Daniel Loss
An algorithm is presented for error correction in the surface code quantum memory. This is shown to correct depolarizing noise up to a threshold error rate of 18.5%, exceeding prev…