Comment on "Geometry of the quantum set on no-signaling faces"

Abstract

In Ref. [1] the authors claim that the Almost Quantum set of correlations cannot reproduce two points on the boundary of the quantum set of correlations. This claim is incorrect. The underlying issue is that the associated SDP is not strictly feasible, which makes the numerical solvers give unreliable answers. We give analytical proofs that both points are indeed reproduced by Almost Quantum.

5 pages, 2 Mathematica notebooks

References in corpus (2)

• A convergent hierarchy of semidefinite programs characterizing the set of quantum correlations
• Almost quantum correlations

Cited by in corpus (2)

• Semidefinite programming relaxations for quantum correlations
• Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs