Beecroft Building, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU
Dr Jack Kemp, University of Cambridge
Abstract
Strong Zero Modes: phase boundaries, and protected edge qubits in experiment
Strong zero modes are edge-localized degrees of freedom capable of storing information at infinite temperature, without requiring disorder. Even in non-integrable systems, this information can be protected for exponentially-long, prethermal timescales. In this talk, I will discuss two recent results regarding strong zero modes. Firstly, I will show how such modes can also become localised at the boundary between two systems, rather than just the edge of one, opening the door for possible dynamical control of their location. Secondly, I will explain a proposal to utilise strong edge zero modes in a system with symmetry protected topological order to form robust boundary qubits, and detail their experimental observation in an array of 100 programmable superconducting qubits.