top of page

@Nat. Comm. Physics: Assessing physical realism experimentally in a quantum-controlled device


Bohr’s complementarity principle has been challenged by quantum delayed-choice experiments wherein quantum systems are claimed to behave neither as wave nor as a particle, but in an intermediary way. However, this conclusion has been supported by retro-inference and with no direct link with the system quantum state. Here, we consider a framework that employs an operational criterion of physical reality to diagnosis the system ontology directly from the quantum state at each instant of time. We show that, in disparity with previous proposals, our setup ensures a formal link between the output visibility and elements of reality within the interferometer. An experimental proof-of-principle is provided for a two-spin-1/2 system in an interferometric setup implemented in a nuclear magnetic resonance platform. We discuss how our results validate, to a great extent, Bohr’s original formulation of the complementarity principle and unveil morphing reality states.


Read more: Nature Communications Physics 5, 82 (2022) | pdf |


Featured in:

Objective Reality May Not Exist at All, Quantum Physicists Say. Popular Mechanics

Assessing physical realism experimentally in a quantum-regulated device. PhysOrg

Experimento brasileiro confirma um dos principais fundamentos da física quântica. Agência FAPESP

New experiment demonstrates that reality might actually be real. TNW

Experimento quântico mostra que nosso universo pode não ser holográfico; entenda. Canaltech

Featured Posts
Recent Posts
Archive
Search By Tags
No tags yet.
bottom of page