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arXiv:1201.1833 · Nature Physics

Experimental demonstration of a universally valid error–disturbance uncertainty relation in spin measurements

Jacqueline Erhart, Stephan Sponar, Georg Sulyok, G. Badurek, Masanao Ozawa, Yuji Hasegawa

Published Jan 13, 2012• 258 citations
arXivHTMLPDF
DOI
10.1038/nphys2194

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Comment on "Experimental demonstration of a universally valid error-disturbance uncertainty relation in spin measurements"

Y. Kurihara

In this comment we show that the experimental results for a universally valid uncertainty relation in ref.[J. Erhart et al. Nat. Phys.(2012)10.1038/nphys2194]cannot be justified. The experiments cannot be recognized to establish a violation of the Heisenberg-type uncertainty relation suggested by Ozawa[Phys. Lett. A318(2003)21, Phys. Rev. A67(2003)042105].

arXiv:1201.5151•Jan 24, 2012•1 citation
Experimental Investigations of Uncertainty Relations Inherent in Successive 1/2−1/2-1/2−Spin Measurements