Semidefinite programs are convex optimization problems involving a linear objective
function and a domain of positive-semidefinite matrices. Over the past two decades, they …

It is a long-standing debate that why quantum mechanics uses complex numbers but not
real numbers only. To address this topic, in recent years, the imaginarity theory has been …

In terms of the metric-adjusted skew information (an important and versatile class of
quantum Fisher information), which generalizes the seminal Wigner-Yanase skew …