Phys.org April 10, 2020
An international team of researchers (Austria, USA – NIST, University of Maryland, Germany, France) proposed and analyzed a universal toolbox of measurement protocols to reveal many-body topological invariants of phases with global symmetries, which can be implemented in state-of-the-art experiments with synthetic quantum systems, such as Rydberg atoms, trapped ions, and superconducting circuits. The protocol is based on extracting the many-body topological invariants from statistical correlations of randomized measurements, implemented with local random unitary operations followed by site-resolved projective measurements. They illustrated the technique and its application in the context of the complete classification of bosonic symmetry-protected topological phases in one dimension…read more. Open Access TECHNICAL ARTICLE
A particularly fascinating class of quantum states are topological states of matter. Credit: IQOQI Innsbruck/Harald Ritsch