Shao-Ming Fei

Nonlocality without entanglement in general multipartite quantum systems

2022 · Physical Review A

The construction of nonlocal sets of quantum states has attracted much attention in recent years. We first introduce two lemmas related to the triviality of orthogonality-preserving local measurements. Then, we propose a general construction of …

Tsallis relative <i>α</i> entropy of coherence dynamics in Grover′s search algorithm

2023 · Communications in Theoretical Physics

Abstract Quantum coherence plays a central role in Grover’s search algorithm. We study the Tsallis relative <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>α</mml:mi> </mml:math> entropy of coherence dynamics of the evolved state in Grover’s search algorithm. We prove …

Separability criteria based on realignment

2024 · arXiv (Cornell University)

The detection of entanglement in a bipartite state is a crucial issue in quantum information science. Based on realignment of density matrices and the vectorization of the reduced density matrices, we introduce a new set …