Testing Higher-Order Quantum Interference with Many-Particle States.

@article{Pleinert2021TestingHQ,
  title={Testing Higher-Order Quantum Interference with Many-Particle States.},
  author={Marc-Oliver Pleinert and A. Rueda and E. Lutz and J. von Zanthier},
  journal={Physical review letters},
  year={2021},
  volume={126 19},
  pages={
          190401
        }
}
Quantum theory permits interference between indistinguishable paths but, at the same time, restricts its order. Single-particle interference, for instance, is limited to the second order, that is, to pairs of single-particle paths. To date, all experimental efforts to search for higher-order interferences beyond those compatible with quantum mechanics have been based on such single-particle schemes. However, quantum physics is not bound to single-particle interference. We here experimentally… Expand
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