Probability representation and quantumness tests for qudits and two-mode light states

Details Probability representation and quantumness tests for qudits and two-mode light states Probability representation and quantumness tests for qudits and two-mode light states

2009-09-15

arxiv.org/abs/0909.2746v1

Journal of Russian Laser Research 30 (2009) 443-450

Physics

Quantum Physics

5 pages, 2 figures, PDFLaTeX, Contribution to the 11th International Conference on Squeezed States and Uncertainty Relations (

Scientific paper

10.1007/s10946-009-9099-5

Using tomographic-probability representation of spin states, quantum behavior of qudits is examined. For a general j-qudit state we propose an explicit formula of quantumness witnetness whose negative average value is incompatible with classical statistical model. Probability representations of quantum and classical (2j+1)-level systems are compared within the framework of quantumness tests. Trough employing Jordan-Schwinger map the method is extended to check quantumness of two-mode light states.

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