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arXiv · 0808.2287

Bell inequality for qubits based on the Cauchy-Schwarz inequality

Jing-Ling Chen·Dong-Ling Deng
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Abstract

We develop a systematic approach to establish Bell inequalities for qubits based on the Cauchy-Schwarz inequality. We also use the concept of distinct "roots" of Bell function to classify some well-known Bell inequalities for qubits. As applications of the approach, we present three new and tight Bell inequalities for four and three qubits, respectively.

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Jing-Ling Chen, Dong-Ling Deng. 2008-08-17. Bell inequality for qubits based on the Cauchy-Schwarz inequality. https://doi.org/10.1103/physreva.79.012115

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