Robust fault tolerance for continuous-variable cluster states with excess anti-squeezing
Quantum Physics
2019-07-31 v1
Abstract
The immense scalability of continuous-variable cluster states motivates their study as a platform for quantum computing, with fault tolerance possible given sufficient squeezing and appropriately encoded qubits [Menicucci, PRL 112, 120504 (2014)]. Here, we expand the scope of that result by showing that additional anti-squeezing has no effect on the fault-tolerance threshold, removing the purity requirement for experimental continuous-variable cluster-state quantum computing. We emphasize that the appropriate experimental target for fault-tolerant applications is to directly measure 15-17 dB of squeezing in the cluster state rather than the more conservative upper bound of 20.5 dB.
Cite
@article{arxiv.1903.02162,
title = {Robust fault tolerance for continuous-variable cluster states with excess anti-squeezing},
author = {Blayney W. Walshe and Lucas J. Mensen and Ben Q. Baragiola and Nicolas C. Menicucci},
journal= {arXiv preprint arXiv:1903.02162},
year = {2019}
}
Comments
3 figures, 5 pages