Speaker
Description
Nonlocality certifies entanglement and generalizes to multipartite scenarios. While the two-party case is well characterized, quantifying entanglement beyond two parties is considerably more involved. In the tripartite case, one can visualize the relationship between tripartite entanglement described by the three-tangle [1] and multipartite Bell nonlocality. In this work we find that expressivity-restricted ansatz ensembles exhibit distinct, structured coverage patterns within the attainable region of three-tangle and maximized violation degree, with some ansätze achieving dense coverage of specific subregions even at relatively low circuit depth – a result with direct implications for the distribution of non-classical resources. To study this, we generate pure quantum states from ensembles defined by parametrized ansatz circuits and examine how they populate this region, previously shown to form a wedge-shaped region [2–4]. This may allow for better selection of ansatz circuits based on non-classical correlations, e.g., for benchmarking [5, 6].
| Topic | Quantum variational circuits and their applications |
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