Corpus ID: 216562605

Probing quantum coherence at a distance

  title={Probing quantum coherence at a distance},
  author={Sebastian Horvat and Philippe Allard Gu{\'e}rin and Luca Apadula and Flavio Del Santo},
  journal={arXiv: Quantum Physics},
In a standard interferometry experiment, one measures the phase difference between two paths by recombining the two wave packets on a beam-splitter. However, it has been recently recognized that the phase can also be estimated via local measurements, by using an ancillary particle in a known superposition state. In this work, we further analyse these protocols for different types of particles (bosons or fermions, charged or uncharged), with a particular emphasis on the subtleties that arise… Expand

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