Seminar: Dr Daniel Burgarth, Macquarie University

Dynamical decoupling and wild environments
Challenge folk-knowledge of what are "nice" and "wild" quantum environments in the context of noise decoupling. 

Red and blue abstract line with swirling and an explosive point

Image: Fabio Ballasina/Unsplash

Presenter:  Dr Daniel Burgarth, Macquarie University
Title:  Dynamical decoupling and wild environments

Dynamical decoupling is a common control technique to remove unwanted environmental interactions. The basic idea is to rotate the system actively such that environmental interactions average out. It is folk-knowledge that decoupling works only with “nice" environments which induce non-exponential decay, because such environments provide a time-scale on which they have a memory; and that “wild” environments leading to exponential decay can never be decoupled. Here we provide counter examples to both statements.

Hosted by: UTS Centre for Quantum Software and Information

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