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quant-ph2026
Observing Bell Inequality Violation Beyond the Qubit Bound in a Spinor Bose--Einstein Condensate
Wenxin Xu, Junshuang Hu, Guillem Müller-Rigat +4
Correlations allowed by quantum mechanics can defy any classical explanation, with Bell nonlocality standing as their most profound and operationally powerful manifestation. While…
quant-ph2024
Sufficient criteria for absolute separability in arbitrary dimensions via linear map inverses
Jofre Abellanet-Vidal, Guillem Müller-Rigat, Grzegorz Rajchel-Mieldzioć +1
Quantum states that remain separable (i.e., not entangled) under any global unitary transformation are known as absolutely separable and form a convex set. Despite extensive effort…
quant-ph2024
Deriving three-outcome permutationally invariant Bell inequalities
Albert Aloy, Guillem Müller-Rigat, Jordi Tura +1
We present strategies to derive Bell inequalities valid for systems composed of many three-level parties. This scenario is formalized by a Bell experiment with observers, each…