2 papers
quant-ph2026
Multiple fidelities and joint numerical range
Pei Li, Bang-Hai Wang
We investigate the effectiveness of entanglement detection based on multiple fidelities via the geometry of the joint separable numerical range. When all reference states are produ…
quant-ph2024
Internal Boundary between Entanglement and Separability Within a Quantum State
Bang-Hai Wang
Quantum states are the key mathematical objects in quantum mechanics, and entanglement lies at the heart of the nascent fields of quantum information processing and computation. Ho…