activity
19942023
most citedTowards Practical Quantum Variational Algorithms

728 citations · 13.6k across the 152 of their papers we have counts for

collaborators

153 papers

quant-ph2023

Entanglement of Sections, Examples Looking for a Theory

M. H. Freedman, M. B. Hastings

Quantum information is about the entanglement of states. To this starting point we add parameters whereby a single state becomes a non-vanishing section of a bundle. We consider th…

cond-mat.str-el2022★ 1 cited

Perturbation Theory and the Sum of Squares

Matthew B. Hastings

The sum-of-squares (SoS) hierarchy is a powerful technique based on semi-definite programming that can be used for both classical and quantum optimization problems. This hierarchy…

quant-ph2022★ 53 cited

Adiabatic paths of Hamiltonians, symmetries of topological order, and automorphism codes

David Aasen, Zhenghan Wang, Matthew B. Hastings

The recent "honeycomb code" is a fault-tolerant quantum memory defined by a sequence of checks which implements a nontrivial automorphism of the toric code. We argue that a general…

quant-ph2022★ 51 cited

Performance of planar Floquet codes with Majorana-based qubits

Adam Paetznick, Christina Knapp, Nicolas Delfosse +4

Quantum error correction is crucial for any quantum computing platform to achieve truly scalable quantum computation. The surface code and its variants have been considered the mos…

quant-ph2022★ 1 cited

On Lieb-Robinson Bounds for the Double Bracket Flow

Matthew B. Hastings

We consider the possibility of developing a Lieb-Robinson bound for the double bracket flow. This is a differential equation which may be used t…

quant-ph2021★ 1 cited

A Classical Algorithm Which Also Beats For High Girth MAX-CUT

Matthew B. Hastings

We give a simple classical algorithm which provably achieves the performance in the title. The algorithm is a simple modification of the Gaussian wave process.