Feedback-controlled adiabatic quantum computation

TL;DR

This paper introduces a feedback-control scheme for adiabatic quantum computation using superconducting flux qubits, which adaptively adjusts computation speed based on ground-state curvature to improve success probability.

Contribution

It presents a practical feedback-control method leveraging existing hardware to enhance adiabatic quantum computation performance.

Findings

Polynomial speed-up in performance achieved

Feasible parameter selection for arbitrary Hamiltonians

Utilizes existing on-chip hardware for control

Abstract

We propose a simple feedback-control scheme for adiabatic quantum computation with superconducting flux qubits. The proposed method makes use of existing on-chip hardware to monitor the ground-state curvature, which is then used to control the computation speed to maximize the success probability. We show that this scheme can provide a polynomial speed-up in performance and that it is possible to choose a suitable set of feedback-control parameters for an arbitrary problem Hamiltonian.