期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 21, 页码 4418-4421出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.4418
关键词
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Tests of local realism versus quantum mechanics based on Bell's inequality employ two entangled qubits. We investigate the general case of two entangled quantum systems defined in N-dimensional Hilbert spaces, or quNits. Via a numerical linear optimization method we show that violations of local realism are stronger for two maximally entangled quNits (3 less than or equal to N less than or equal to 9) than for two qubits and that they increase with N. The two quNit measurements can be experimentally realized using entangled photons and unbiased multiport beam splitters.
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