Theoretical physics: Eyeing entanglement

F. De Martini, Andrei Yu. Khrennikov

In a recent theoretical paper published in Physical Review Letters, Sekatsky, Brunner, Branciard, Gisin, Simon report an extended investigation on some properties of the human eye that affect its behavior as a quantum detector. We believe that the content of this work, albeit appealing at fist sight, is highly questionable simply because the human eye cannot be adopted as a sensing device within any quantum measurement apparatus. Furthermore, the criticism raised by these Authors against a real experiment on Micro—Macro entanglement recently published in Physical Review Letters (100, 253601, 2008) is found misleading and misses its target.

Pavel Sekatski, Nicolas Brunner, Cyril Branciard +2 more

We show theoretically that a large Bell inequality violation can be obtained with human eyes as detectors, in a "micro-macro" experiment where one photon from an entangled pair is greatly amplified via stimulated emission. The violation is robust under photon loss. This leads to an apparent paradox, which we resolve by noting that the violation proves the existence of entanglement before the amplification. The same is true for the micro-macro experiments performed so far with conventional detectors. However, we also prove that there is genuine micro-macro entanglement even for high loss.

Luis de la Peña, Ana Marı́a Cetto, Andrea Valdés Hernández

Jon D Wolski

Light in the Eyes of Mechanical Realism Jon Wolski August 29, 2026 850-901-2800 Abstract For over a century, theoretical physics has attempted to explain the nature of light by bridging the gap between science and magic, resulting in a fractured framework of paradoxical superpositions, teleporting particles, and unlimited abstract realities. Light in the Eyes of Mechanical Realism strips away these mathematical convolutions to investigate the universe at its most fundamental, physical level. By isolating light and examining its behavior strictly through the lens of continuous field mechanics, dynamic frequencies, and structural tension, this paper dismantles the historical dilemma of wave-particle duality. It demonstrates that the mechanics governing our universe are profoundly simple and strictly logical. By returning to a foundation of undeniable mechanical reality, this work proves that light is not a localized, discrete particle flying through an empty void, but a continuous wave of momentum propagating through a unified field.