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](/sites/default/files/styles/wysiwyg_generic_large_x1/public/2019-07/red%20blue%20abstract%20lines%20Fabio%20Ballasina%20on%20Unsplash_0.jpg?itok=-Xm_YicY)
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