4 papers
No Cloning of Quantum Ensembles
Zhenyu Du, Siyuan Cheng, Qi Zhao +2
Modern quantum physics now enables control of quantum systems at the level of individual trajectories, opening a new frontier that links quantum information theory, quantum many-bo…
Complexity-driven transitions in quantum observation
Zhenyu Du, Siyuan Cheng, Han Ye +3
Observing the physical world is a foundational pursuit in science. In the quantum realm, however, observation necessitates a fundamental quantum-to-classical conversion: destructiv…
Biorthogonal dynamical quantum phase transitions in non-Hermitian topological superconductors
Haoran Gu, Yubo Zhao, Siyuan Cheng +3
Dynamical quantum phase transitions in non-Hermitian systems pose fundamental challenges due to the intrinsic biorthogonality of their eigenstates. In this work, we extend a biorth…
Entanglement signatures of quantum criticality in Floquet non-Hermitian topological systems
Siyuan Cheng, Rui Xie, Xiaosen Yang +2
The entanglement entropy can be an effective diagnostic tool for probing topological phase transitions. In one-dimensional single particle systems, the periodic driving generates a…