5 papers
Geometric phase and multipartite entanglement of Rydberg atom chains
Chang-Yan Wang
We investigate the behavior of geometric phase (GP) and geometric entanglement (GE), a multipartite entanglement measure, across quantum phase transitions in Rydberg atom chains. U…
The Uhlmann Phase Winding in Bose-Einstein Condensates at Finite Temperature
Chang-Yan Wang, Yan He
We investigate the Uhlmann phase, a generalization of the celebrated Berry phase, for Bose-Einstein condensates (BECs) at finite temperature. The Uhlmann phase characterizes topolo…
Distinguishing Quantum Phases through Cusps in Full Counting Statistics
Chang-Yan Wang, Tian-Gang Zhou, Yi-Neng Zhou +1
Measuring physical observables requires averaging experimental outcomes over numerous identical measurements. The complete distribution function of possible outcomes or its Fourier…
Quantum Echo in Two-Component Bose-Einstein Condensates
Chang-Yan Wang
The development of ultracold atom technology has enabled the precise investigations on quantum dynamics of quantum gases. Recently, inspired by experimental advancement, the $SU(1,…
Topological nature of step edge states on the surface of topological crystalline insulator PbSnSe
Davide Iaia, Chang-Yan Wang, Yulia Maximenko +5
In addition to novel surface states, topological insulators can also exhibit robust gapless states at crystalline defects. Step edges constitute a class of common defects on the su…