Quantum Reality Erasure with Spacelike-Separated Operations

• URL: http://arxiv.org/abs/2407.07185v1
• Date: Tue, 9 Jul 2024 18:58:48 GMT
• Title: Quantum Reality Erasure with Spacelike-Separated Operations
• Authors: J. S. Araújo, Diego S. Starke, A. S. Coelho, J. Maziero, G. H. Aguilar, R. M. Angelo,
• Abstract summary: 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. 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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