How a single particle modifies the physical reality of two distant others simultaneously: a quantum nonlocality and weak value study

TL;DR

This paper explores how a single photon can influence two distant locations simultaneously without collapse, using entanglement mediation and weak measurements to challenge traditional wave-particle duality interpretations.

Contribution

It demonstrates that a photon can modify two separate physical realities at once through entanglement, avoiding collapse and supporting nonlocal quantum effects.

Findings

Photon can influence two distant locations simultaneously

Weak measurements confirm the nonlocal influence

Entanglement mediation enables remote reality modification

Abstract

The concept of wave-particle duality, which is a key element of quantum theory, has been remarkably found to manifest itself in several experimental realizations as in the famous double-slit experiment. In this specific case, a single particle seems to travel through two separated slits simultaneously. Nevertheless, it is never possible to measure it in both slits, which naturally appears as a manifestation of the collapse postulate. In this respect, one could as well ask if it is possible to "perceive" the presence of the particle at the two slits simultaneously, once its collapse could be avoided. In this article, we use the recently proposed entanglement mediation protocol to provide a positive answer to this question. It is shown that a photon which behaves like a wave, i.e., which seems to be present in two distant locations at the same time, can modify two existing physical realities in these locations. Calculations of the "weak trace" left by such photon also enforce the validity of the present argumentation.