Quantum weak values
量子物理
2008-11-26 v2
摘要
We experimentally determine weak values for a single photon's polarization, obtained via a weak measurement that employs a two-photon entangling operation, and postselection. The weak values cannot be explained by a semiclassical wave theory, due to the two-photon entanglement. We observe the variation in size of the weak value with measurement strength, obtaining an average measurement of the S_1 Stokes parameter more than an order of magnitude outside of the operator's spectrum for the smallest measurement strengths.
引用
@article{arxiv.quant-ph/0412204,
title = {Quantum weak values},
author = {G. J. Pryde and J. L. O'Brien and A. G. White and T. C. Ralph and H. M. Wiseman},
journal= {arXiv preprint arXiv:quant-ph/0412204},
year = {2008}
}
备注
4 pages, 2 figures