Hao Yuan

Nonlinear steering criteria for arbitrary two-qubit quantum systems

2020 · arXiv (Cornell University)

By employing Pauli measurements, we present some nonlinear steering criteria applicable for arbitrary two-qubit quantum systems and optimized ones for symmetric quantum states. These criteria provide sufficient conditions to witness steering, which can recover the …

On Explainability of Graph Neural Networks via Subgraph Explorations

2021 · arXiv (Cornell University)

We consider the problem of explaining the predictions of graph neural networks (GNNs), which otherwise are considered as black boxes. Existing methods invariably focus on explaining the importance of graph nodes or edges but ignore …