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Title: Photon-number entangled states generated in Kerr media with optical parametric pumping

Two nonlinear Kerr oscillators mutually coupled by parametric pumping are studied as a source of states entangled in photon numbers. Temporal evolution of entanglement quantified by negativity shows the effects of sudden death and birth of entanglement. Entanglement is preserved even in asymptotic states under certain conditions. The role of reservoirs at finite temperature in entanglement evolution is elucidated. Relation between generation of entangled states and violation of Cauchy-Schwartz inequality for oscillator intensities is found.
Authors:
; ;  [1]
  1. Nonlinear Optics Division, Department of Physics, Adam Mickiewicz University, Umultowska 85, PL-61-614 Poznan (Poland)
Publication Date:
OSTI Identifier:
21546743
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.83.052326; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMPTOTIC SOLUTIONS; NONLINEAR PROBLEMS; OPTICAL PUMPING; OSCILLATORS; PHOTONS; QUANTUM ENTANGLEMENT; QUANTUM STATES BOSONS; ELECTRONIC EQUIPMENT; ELEMENTARY PARTICLES; EQUIPMENT; MASSLESS PARTICLES; MATHEMATICAL SOLUTIONS; PUMPING