9 citations · 22 across the 20 of their papers we have counts for
4 papers · 1 filter
Intermediate-temperature topological Uhlmann phase on IBM quantum computers
Christopher Mastandrea, Costin Iancu, Hao Guo +1
A spin-1 system can exhibit an intermediate-temperature topological regime with a quantized Uhlmann phase sandwiched by topologically trivial low- and high-temperature regimes. We…
Thermal Uhlmann-Chern Number: Bridging Pure and Mixed States
Xin Wang, Xu-Yang Hou, Yan He +1
Topological properties of quantum systems at finite temperatures, described by mixed states, pose significant challenges due to the triviality of the Uhlmann bundle. We introduce t…
Bound-like State in a 1D Self-Similar Delta-Barrier Array
Jia-Chen Tang, Xu-Yang Hou, Yan He +1
We investigate a one-dimensional quantum system with a self-similar arrangement of delta-function potential barriers, exhibiting discrete scale invariance. The singular potential i…
Mixed-state geometric phases of coherent and squeezed spin states
Xin Wang, Jia-Chen Tang, Xu-Yang Hou +2
Two mixed-state geometric phases, known as the Uhlmann phase and interferometric geometric phase (IGP), of spin coherent states (CSSs) and spin squeezed states (SSSs) are analyzed.…