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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Entanglement detection via atomic deflection

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Maximo, C. E. [1] ; Bachelard, R. [1, 2] ; de Moraes Neto, G. D. [3] ; Moussa, M. H. Y. [1]
Total Authors: 4
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Fis, Rd Washington Luis, Km 235 SP 310, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Uberlandia, Inst Fis, BR-38400902 Uberlandia, MG - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS; v. 34, n. 12, p. 2452-2458, DEC 1 2017.
Web of Science Citations: 0

We report on criteria to detect entanglement between the light modes of two crossed optical cavities by analyzing the transverse deflection patterns of an atomic beam. The photon exchange between the modes and atoms occurs around the overlapping nodes of associated standing waves, which generates the two-dimensional (2D) version of the Optical Stern - Gerlach (OSG) effect. In this optical cross-cavity setup, we show that the discrete signatures of the field states, left in the momentum distribution of the deflected atoms, may reveal entanglement for a certain class of two-mode states. For a single photon, we present the possibility of quantifying entanglement by the rotation of the momentum distribution. For a larger number of photons, we demonstrate that quantum interference precludes the population of specific momentum states revealing maximum entanglement between the light modes. (C) 2017 Optical Society of America (AU)

FAPESP's process: 14/19459-6 - Self-organization processes and transport properties of light in cold atomic clouds
Grantee:Carlos Eduardo Máximo
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/01491-0 - Atomic clouds under stress
Grantee:Romain Pierre Marcel Bachelard
Support type: Research Grants - Young Investigators Grants