Experimental Falsification of Leggett's Non-Local Variable Model

Abstract

Bell's theorem guarantees that no model based on local variables can reproduce quantum correlations. Also some models based on non-local variables, if subject to apparently "reasonable" constraints, may fail to reproduce quantum physics. In this paper, we introduce a family of inequalities, which allow testing Leggett's non-local model versus quantum physics, and which can be tested in an experiment without additional assumptions. Our experimental data falsify Leggett's model and are in agreement with quantum predictions.

5 pages, 3 figures, 1 table

References in corpus (2)

• An experimental test of non-local realism
• The Communication Cost of Simulating Bell Correlations

Cited by in corpus (5)

• Hidden variable models for quantum theory cannot have any local part
• Absolute emission rates of Spontaneous Parametric Down Conversion into single transverse Gaussian modes
• Hardy's Test versus the CHSH Test of Quantum Non-Locality: Fundamental and Practical Aspects
• Time and nonlocal realism: Consequences of the before-before experiment
• Leggett's inequality, the before-before experiment, and free will on the part of Nature