Wave-particle duality in tripartite systems
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Date
2023Author
Marrou, J. P.
Montenegro La Torre, C.
Jara, M.
De Zela, F.
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https://doi.org/10.1364/JOSAA.482505Abstract
Quantum objects, sometimes called quantons, often display a characteristic feature that is referred
to as wave-particle duality (WPD). Lately, this and other quantum traits have been submitted to
intensive research, mainly motivated by the development of quantum information science. As a
consequence, the scope of some concepts have been extended and it has been realized that they
are not in the exclusive domain of quantum physics. This is particularly clear in optics, where
qubits may show up as Jones vectors and WPD has its counterpart as wave-ray duality. WPD was
originally addressed by focussing on a single qubit, which was afterwards supplemented with a second
one playing the role of a path-marker in an interferometric setup. Fringe contrast, a sign of wavelike
behavior, was proved to be diminished in connection with the e ectiveness of the marker, the
inducer of particle-like behavior. Going from bipartite to tripartite states is a natural and necessary
step towards a better understanding of WPD. This step is what we have accomplished in this work.
We report some constraints ruling WPD for tripartite systems, as well as their experimental display
with single photons.
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