Simple geometric inequalities rule out joint reality of two-valued quantum observables under locality or operational completeness, giving new qubit no-go results.
The content of Theorem 3 is thus also applicable to the joint reality of noisy qubit observables, as expected from its device- independent nature
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Geometry of joint reality: device-independent steering and operational completeness
Simple geometric inequalities rule out joint reality of two-valued quantum observables under locality or operational completeness, giving new qubit no-go results.