Variational approach to quantum spin liquid in a Rydberg atom simulator

Recently the Rydberg blockade effect has been utilized to realize quantum spin liquid on kagome lattice. Evidence of obtained experimentally by directly measuring non-local string order. In this letter, we report a BCS-type variational wave function study state in model. This is motivated mapping model lattice gauge theory, where local conservations replace role constraints from blockade. We determine parameter experimental measurement atom population. Then compare predictions deterministic with measurements Combining both open and closed strings, extract fluctuations only associated closed-loop as an indicator topological The prediction our agrees reasonably well data without any fitting parameter. Our provides simple intuitive picture system that can be generalized various generalizations current