2 papers
quant-ph2026
Superiority of Krylov shadow tomography in estimating quantum Fisher information: From bounds to exactness
Yuan-Hao Wang, Da-Jian Zhang
Estimating the quantum Fisher information (QFI) is a crucial yet challenging task with widespread applications across quantum science and technologies. The recently proposed Krylov…
quant-ph2026
Survival of Hermitian Criticality in the Non-Hermitian Framework
Fei Wang, Guoying Liang, Zecheng Zhao +3
In this work, we investigate many-body phase transitions in a one-dimensional anisotropic XY model subject to a complex-valued transverse field. Within the biorthogonal framework,…