Scientific Results

Hyper- and hybrid nonlocality

Year: 2018

Authors: Li YN., Gessner M., Li WD., Smerzi A.

Autors Affiliation: [Li, Yanna; Li, Weidong] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China and Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, State Key Lab Quantum Opt & Quantum Opt Devices, Dept Phys, Taiyuan 030006, Shanxi, Peoples R China.
[Gessner, Manuel; Smerzi, Augusto] INO CNR, QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy and LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy.

Abstract: The controlled generation and identification of quantum correlations, usually encoded in either qubits or continuous degrees of freedom, builds the foundation of quantum information science. Recently, more sophisticated approaches, involving a combination of two distinct degrees of freedom, have been proposed to improve on the traditional strategies. Hyperentanglement describes simultaneous entanglement in more than one distinct degree of freedom, whereas hybrid entanglement refers to entanglement shared between a discrete and a continuous degree of freedom. In this work we propose a scheme that allows us to combine the two approaches, and to extend them to the strongest form of quantum correlations. Specifically, we show how two identical, initially separated particles can be manipulated to produce Bell nonlocality among their spins, among their momenta, as well as across their spins and momenta. We discuss possible experimental realizations with atomic and photonic systems.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 120 (5)      Pages from: 050404-1  to: 050404-6

KeyWords: independent-particle sources; bell-state analysis; quantum information; photon recoil; atomic interferometry
DOI: 10.1103/PhysRevLett.120.050404

Citations: 4
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