Work

Quantum correlations in three-beam symmetric Gaussian states accessed via photon-number-resolving detection and quantum universal invariants

Year: 2025

Type: article

Abstract: Quantum correlations of symmetric three-beam Gaussian states are analyzed using their quantum universal invariants. These invariants, one-, two-, and three-beam purities, are expressed in terms of the beams’ intensity moments up to sixth order. The three-beam symmetric Gaussian states with varying amounts of the noise are experimentally generated using entangled photon pairs from down-conversion, their invariants are determined, and their quantum correlations are quantified. The coexistence of bipartite and tripartite entanglement and genuine tripartite entanglement is observed in these states that resemble the noisy GHZ/W states.

Source: Physical Review Research

DOI: 10.1103/vd3h-4pts

Authors: Jan Peřina, Nazarii Sudak, Artur Barasiński, Antonín Černoch

Institutions: Palacký University Olomouc, University of Wrocław, FZU - Institute of Physics of the Czech Academy of Sciences

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funder: Ministerstvo Školství, Mládeže a Tělovýchovy