  In 1935, Einstein, Podolsky, and Rosen argued that quantum mechanics is
incomplete, based on the assumption that local actions cannot influence
elements of reality at a distant location (local realism). In this work, using
a recently defined quantum reality quantifier, we show that Alice's local
quantum operations can be correlated with the erasure of the reality of
observables in Bob's causally disconnected laboratory. To this end, we
implement a modified optical quantum eraser experiment, ensuring that Alice's
and Bob's measurements remain causally disconnected. Using an entangled pair of
photons and quantum state tomography, we experimentally verify that, even with
the total absence of any form of classical communication, the choice of quantum
operation applied by Alice on her photon is correlated with the erasure of a
spatial element of reality of Bob's photon. In this case, it is shown that
Bob's photon can entangle two extra non-interacting degrees of freedom, thus
confirming that Bob's photon path is not an element of physical reality.
