Back to reality?

Tim Beardsley

F. J. Duarte

Is there a quantum reality which is distinct from a ‘classical reality’? Or is there only one reality determined by physical measurements? The observation by Dalitz and Duarte – ‘Already in 1948, observations agreed with quantum mechanics, not with local realism’ – appears to suggest a departure from classical reality. However, going back to the inescapable truth that Nature describes herself via the experiment , then such divergence between quantum and classical realities is not all that transparent since what made the quote above possible is the nonlocality of the photon . And the nonlocality of the photon is a measurable physical phenomenon. This observation suggests that quantum reality is grander and includes, as a subset, ‘classical reality.’

Muhammad Sabieh Anwar, Faizan-e-Ilahi, Syed Bilal Hyder +1 more

The introductory chapter motivates why we wrote this back, the context and surveys some pioneering work on tabletop experiments that demonstrate the quantum reality of light, manifest through single photons. It also spells out the content and organization of the book.

Liesbeth C. Venema