Is it all correlation?
Biphoton state holographic reconstruction. Image reconstruction. a, Coincidence image of interference between a reference SPDC state and a state obtained by a pump beam with the shape of a Ying and Yang symbol (shown in the inset). The inset scale is the same as in the main plot. b, Reconstructed amplitude and phase structure of the image imprinted on the unknown pump. Credit: Nature Photonics (2023). DOI: 10.1038/s41566-023-01272-3 Quantum entanglement flies in the face of our quotidian “us-scale” reality. For that matter, post-Euclidian math and physics are for the most part, contradictory of the so-called “real world” and yet, humanity continues to live as though it knows what is real. In large measure, we don’t. Am I making a claim that quantum mechanics is the truest depiction of reality? Well, let’s put it like this; it seems to provide a telling proof that things are not as we perceive them (which any artist or philosopher or mystic over the past 10,000 years would av...