期刊
PHYSICAL REVIEW A
卷 79, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.012115
关键词
Bell theorem
资金
- NSF of China [10605013]
- Program for New Century Excellent Talents in University
- SRF for ROCS, SEM
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 the Bell function to classify some well-known Bell inequalities for qubits. As applications of the approach, we present three unique and tight Bell inequalities for four and three qubits, respectively.
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