TITLE

Quantum mechanics: Hidden context

AUTHOR(S)
Blinov, Boris
PUB. DATE
July 2009
SOURCE
Nature;7/23/2009, Vol. 460 Issue 7254, p464
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The article reports on a study which examines a system of trapped ions and demonstrate that quantum mechanics conflicts with non-contextuality regardless of the quantum state of the system. The researcher have utilized a pair of trapped ions for which almost any spin state could be prepared on demand. They made a sequence of compatible measurements on the spin states to test whether a Bell-like inequality was obeyed or violated. Moreover, the study showed that for all quantum states tested, they found a strong violation of the inequality, a clear demonstration of the contextual nature of quantum mechanics.
ACCESSION #
43325046

 

Related Articles

  • Do Electrons and Ions Coexist in an EBIT? Lapierre, A.; Crespo López-Urrutia, J. R.; Braun, J.; Brenner, G.; Bruhns, H.; Fischer, D.; González Martínez, A. J.; Mironov, V.; Osborne, C. J.; Sikler, G.; Soria Orts, R.; Tawara, H.; Yamazaki, Y.; Ullrich, J. // AIP Conference Proceedings;2005, Vol. 793 Issue 1, p361 

    Detailed analysis of an extended exponential tail observed in the decay curve of the 2P3/2-2P1/2 magnetic dipole (M1) transition in boron-like Ar13+ provides evidence that electrons and ions might coexist in the same spatial region in the Heidelberg Electron Beam Ion Trap (HD-EBIT). On this...

  • Trapped Atomic Ions and Quantum Information Processing. Wineland, D. J.; Leibfried, D.; Bergquist, J. C.; Blakestad, R. B.; Bollinger, J. J.; Britton, J.; Chiaverini, J.; Epstein, R. J.; Hume, D. B.; Itano, W. M.; Jost, J. D.; Knill, M.; Koelemeij, J. C. J.; Langer, C.; Ozeri, R.; Reichle, R.; Rosenband, T.; Schaetz, T.; Schmidt, P. O.; Seidelin, S. // AIP Conference Proceedings;2006, Vol. 869 Issue 1, p103 

    The basic requirements for quantum computing and quantum simulation (single- and multi-qubit gates, long memory times, etc.) have been demonstrated in separate experiments on trapped ions. Construction of a large-scale information processor will require synthesis of these elements and...

  • Effect of non-Maxwellian particle trapping and dust grain charging on dust acoustic solitary waves. Rubab, N.; Murtaza, G.; Mushtaq, A. // Physics of Plasmas;Nov2006, Vol. 13 Issue 11, p112104 

    The role of adiabatic trapped ions on a small but finite amplitude dust acoustic wave, including the effect of adiabatic dust charge variation, is investigated in an unmagnetized three-component dusty plasma consisting of electrons, ions and massive micron sized negatively charged dust...

  • Quantum simulation of the Dirac equation. Gerritsma, R.; Kirchmair, G.; Zähringer, F.; Solano, E.; Blatt, R.; Roos, C. F. // Nature;1/7/2010, Vol. 463 Issue 7277, p68 

    The Dirac equation successfully merges quantum mechanics with special relativity. It provides a natural description of the electron spin, predicts the existence of antimatter and is able to reproduce accurately the spectrum of the hydrogen atom. The realm of the Dirac...

  • Experimental test of Bell’s inequality via the 1H(d,2He)n reaction. Saito, T.; Sakai, H.; Ikeda, T.; Itoh, K.; Kawabata, T.; Kuboki, H.; Maeda, Y.; Matsui, N.; Sasano, M.; Satou, Y.; Sekiguchi, K.; Suda, K.; Tamii, A.; Uesaka, T.; Yako, K. // AIP Conference Proceedings;2005, Vol. 768 Issue 1, p62 

    To test Bell’s inequality, measurements of spin correlations between two protons in the spin singlet state have been performed. Proton pairs in the singlet state were produced by the 1H(d,2He)n reaction at Ed = 270 MeV. © 2005 American Institute of Physics

  • ‘Magic’ nucleus 42Si. Fridmann, J.; Wiedenhöver, I.; Gade, A.; Baby, L. T.; Bazin, D.; Brown, B. A.; Campbell, C. M.; Cook, J. M.; Cottle, P. D.; Diffenderfer, E.; Dinca, D.-C.; Glasmacher, T.; Hansen, P. G.; Kemper, K. W.; Lecouey, J. L.; Mueller, W. F.; Olliver, H.; Rodriguez-Vieitez, E.; Terry, J. R.; Tostevin, J. A. // Nature;6/16/2005, Vol. 435 Issue 7044, p922 

    Nuclear shell structures—the distribution of the quantum states of individual protons and neutrons—provide one of our most important guides for understanding the stability of atomic nuclei. Nuclei with ‘magic numbers’ of protons and/or neutrons (corresponding to closed...

  • Quantization in Classical Electrodynamics. Perkovac, Milan // Physics Essays;Mar2002, Vol. 15 Issue 1, p41 

    The theory of a system consisting of two electrically charged particles is deduced using classical electrodynamics. This theory is applied to hydrogen and hydrogen-like atoms.

  • IT ALL STARTS WITH AN ATOM.  // World Almanac for Kids;2003, p187 

    The smallest possible piece of an element that has all the properties of the original element is called an atom. Each tiny atom is made up of even smaller particles called protons, neutrons, and electrons. These are made up of even smaller particles called quarks. To tell one element from...

  • Nonlinear optical responses due to exciton-phonon interactions in strongly coupled exciton-phonon systems. Zhu, K.-D.; Yuan, X.-Z.; Dong, J.-J.; Li, W.-S. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2004, Vol. 30 Issue 1, p117 

    The excitonic nonlinear optical responses due to exciton-phonon interactions in strongly coupled exciton-phonon systems are investigated theoretically. It is shown that the influence of exciton-phonon interactions on the nonlinear optical absorptions and Kerr nonlinear coefficients is...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics