Simplified measurement of the Bell parameter within quantum mechanics

Details Simplified measurement of the Bell parameter within quantum mechanics Simplified measurement of the Bell parameter within quantum mechanics

2008-01-29

arxiv.org/abs/0801.4549v1

Physics

Quantum Physics

4 pages, 1 figure. Submitted to Physical Review A

Scientific paper

We point out that, if one accepts the validity of quantum mechanics, the Bell parameter for the polarization state of two photons can be measured in a simpler way than by the standard procedure [Clauser, Horne, Shimony, and Holt, Phys. Rev. Lett. 23, 880 (1969)]. The proposed method requires only two measurements with parallel linear-polarizer settings for Alice and Bob at 0 and 45 degrees, and yields a significantly smaller statistical error for a large Bell parameter.

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