https://doi.org/10.1140/epjd/s10053-022-00374-x
Regular Article – Quantum Optics
Two-particle superposition effects in two-slit interference
Centro de Láseres Pulsados CLPU Parque Científico, 37085, Villamayor, Salamanca, Spain
Received:
9
November
2021
Accepted:
28
February
2022
Published online:
11
March
2022
Entanglement can modify the interference patterns of multi-particle systems. We analyse, using the path integral formalism, a novel example of multi-particle interference and some unexplored aspects of this phenomenon by considering the two-slit arrangement with two distinguishable particles in a superposition state. The two components of entanglement, multiplicity of multi-particle terms and their coherence, can be studied separately by comparing the patterns of product, mixed and superposition states. This suggests a scheme to detect multi-particle superposition in some favourable cases. Moreover, the dependence of the effect on the entanglement degree, measured by the Schmidt number, is not a monotone.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022
