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Violation of Bell's inequality using classical measurements and nonlinear local operations

Journal Article · · Physical Review. A
 [1]; ;  [2]
  1. Instytut Fizyki Teoretycznej, Uniwersytet Warszawski, Warszawa 00-681 (Poland)
  2. Centre for Quantum Computer Technology, Department of Physics, University of Queensland, St Lucia, Qld 4072 (Australia)
We find that Bell's inequality can be significantly violated (up to Tsirelson's bound) with two-mode entangled coherent states using only homodyne measurements. This requires Kerr nonlinear interactions for local operations on the entangled coherent states. Our example is a demonstration of Bell-inequality violations using classical measurements. We conclude that entangled coherent states with coherent amplitudes as small as 0.842 are sufficient to produce such violations.
OSTI ID:
20982457
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 75; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English