Abstract
AbstractContextuality is a phenomenon at the heart of quantum mechanics different from classical behavior and has been recently identified as a resource in quantum information processing. Experimental demonstration of contextuality is thus an important goal. We experimentally demonstrate a test of state-independent contextuality in a four-dimensional Hilbert space with single photons and violate the inequality by at least 387 standard deviations. Despite imperfections and possible measurement disturbance, our results cannot be explained in non-contextual models. We also provide a theoretical analysis of a test of contextuality with a coherent light field and show how the definitions affect the emergence of non-classical correlations. Our result sheds new light on the conflict between quantum and classical physics.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Subject
Computational Theory and Mathematics,Computer Networks and Communications,Statistical and Nonlinear Physics,Computer Science (miscellaneous)
Reference42 articles.
1. Bennett, C. H. & Brassard, G. Quantum cryptography: public key distribution and coin tossing. In Proc. IEEE International Conference on Computers, Systems and Signal Processing 175–179 (IEEE, 1984).
2. Shor, P. W. Polynomial-time algorithms for prime factorization and discrete logarithms on a quantum computer. SIAM J. Comput. 26, 1484–1509 (1997).
3. Nielsen, M. A. & Chuang, I. L. Quantum Computation and Quantum Information (Cambridge Univ. Press, 2010).
4. Howard, M., Wallman, J., Veitch, V. & Emerson, J. Contextuality supplies the ‘magic’ for quantum computation. Nature 510, 351–355 (2014).
5. Delfosse, N., Guerin, P. A., Bian, J. & Raussendorf, R. Wigner function negativity and contextuality in quantum computation on rebits. Phys. Rev. X 5, 021003 (2015).
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献