Generalized Probabilistic Description of Noninteracting Identical Particles

Marcin Karczewski, Marcin Markiewicz, Dagomir Kaszlikowski, and Paweł Kurzyński
Phys. Rev. Lett. 120, 080401 – Published 23 February 2018
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Abstract

We investigate an operational description of identical noninteracting particles in multiports. In particular, we look for physically motivated restrictions that explain their bunching probabilities. We focus on a symmetric 3-port in which a triple of superquantum particles admitted by our generalized probabilistic framework would bunch with a probability of 34. The bosonic bound of 23 can then be restored by imposing the additional requirement of product evolution of certain input states. These states are characterized by the fact that, much like product states, their entropy equals the sum of entropies of their one-particle substates. This principle is, however, not enough to exclude the possibility of superquantum particles in higher-order multiports.

  • Received 19 June 2017
  • Revised 22 January 2018

DOI:https://doi.org/10.1103/PhysRevLett.120.080401

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyGeneral Physics

Authors & Affiliations

Marcin Karczewski1, Marcin Markiewicz2, Dagomir Kaszlikowski3,4, and Paweł Kurzyński1,3,*

  • 1Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
  • 2Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348 Kraków, Poland
  • 3Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore
  • 4Department of Physics, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore

  • *pawel.kurzynski@amu.edu.pl

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Issue

Vol. 120, Iss. 8 — 23 February 2018

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