Wave-particle duality revisited: Neither wave nor particle

[A. Neumaier]

TL;DR

A recent paper

• Jan Sperling et al., Wave-particle duality revisited: Neither wave nor particle, arXiv:1907.09836

From the abstract:

we derive correlation-based criteria that have to be satisfied when either particles or waves are fed into our interferometer. Using squeezed light, it is then confirmed that measured correlations are incompatible with either picture. Thus, within one single experiment, it is proven that neither a wave nor a particle model explains the observed phenomena.

 

[vanhees71]

The upshot seems to be: There's neither waves nor particles and no wave-particle duality but only QED describing all findings in quantum optics. That's no surpise today though it seems to be a nice review paper, but what's new?

 

[A. Neumaier]

but what's new?

What's new is that they give experimentally verifiable criteria for waveness and particleness, and test a situation where both fail.

we have shown in theory and experiment that, already for relatively simple instances of quantum-optical setups, a particle and wave interpretation of quantum light simultaneously fails to explain the measured data.

 

[julcab12]

The upshot seems to be: There's neither waves nor particles and no wave-particle duality but only QED describing all findings in quantum optics.

Not of all QED but a strong case on the nonclassical part(Full QED)--(photon) counting statistics, fundamental/quantum limited noise, Reduced quantum uncertainty or experiments specifically looking at the physics of nonclassical light. Although the semiclassical version works very well--classic EM field in such major field in physics, which is an extremely powerful, yet classical device, that allows you to do all sorts of quantum experiments.