Nature Physics June Issue

TABLE OF CONTENTS June 2012 Volume 8, Issue 6 Editorial Thesis Books and Arts Research Highlights News and Views Letters Articles Corrigendum Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement The Naturejobs Career Expo London 2012   UK's largest career fair and conference focused exclusively on the scientific world. 20 September 2012 - Business Design Centre, London, UK Register today! Career fair is FREE of charge. Conference fee is £40.     Editorial Top Laws of science p437 doi:10.1038/nphys2350 Proposed UK libel-law reform is good news for the process of science, but a proposed constitutional reform may not be good for the profile of science. Full Text | PDF Thesis Top Know your limits p439 Mark Buchanan doi:10.1038/nphys2339 Full Text | PDF Books and Arts Top Opera: Glass physics pp440 - 441 Christian Gnodtke and Abigail Klopper review Einstein on the Beach doi:10.1038/nphys2338 Full Text | PDF Festival: The art of sound p441 Alison Wright doi:10.1038/nphys2349 Full Text | PDF Research Highlights Top Cyclones on Saturn | Mass dependence | Structurally sound | Catch the wave | Wiggle room News and Views Top Quantum mechanics: Get real pp443 - 444 Scott Aaronson doi:10.1038/nphys2325 Do quantum states offer a faithful representation of reality or merely encode the partial knowledge of the experimenter? A new theorem illustrates how the latter can lead to a contradiction with quantum mechanics. Full Text | PDF See also: Article by Pusey et al. Quantum simulation: Toy model p444 Iulia Georgescu doi:10.1038/nphys2340 Full Text | PDF Condensation dynamics: An enlightened daemon pp445 - 446 Claudio Conti doi:10.1038/nphys2336 Modern optics enables precision control over the laser field entering a nonlinear optical crystal. This has made it possible to realize a classical analogue of Bose–Einstein condensation, and it could provide a means of exerting microscopic control over the macroscopic state of complex systems. Full Text | PDF See also: Letter by Sun et al. Biophysics: Two-tone deaf p446 Abigail Klopper doi:10.1038/nphys2341 Full Text | PDF Quantum information: Bad randomness comes good pp447 - 448 Serge Massar doi:10.1038/nphys2310 Quantum non-locality can improve the quality of sources of randomness. Full Text | PDF See also: Letter by Colbeck & Renner Quantum spin Hall effect: Left up right down pp448 - 449 Yi Zhou and Fu-Chun Zhang doi:10.1038/nphys2335 The quantum spin Hall effect is predicted to be the result of two oppositely polarized spin currents travelling in opposite directions around the edges of a topological insulator. But only now has the spin polarization of these currents been confirmed. Full Text | PDF See also: Article by Brune et al. Physics JOBS of the week Professor in experimental materials physics Aarhus Uiversity Postdoctoral Researcher in Computational Condensed Matter and Molecular Physics on Photovoltaics and Biomolecules Department of Physics, University of Helsinki PhD in the Physics of Silicaceous Materials under Extreme Conditions University of Cambridge Established Professor of Experimental Physics National University of Ireland, Galway. Post Doctoral Research Associate Relativistic Heavey Ion Physics University of Tennessee Knoxville More Science jobs from Physics EVENT APS Division of Plasma Physics 29th Oct - 2nd Nov 2012 Rhode Island, US More science events from Letters Top Free randomness can be amplified pp450 - 454 Roger Colbeck and Renato Renner doi:10.1038/nphys2300 Bell's equations enable scientists to test the fundamental implications of quantum physics. A central tenet of this idea is that the choice of measurement is truly random. Researchers now show that some Bell experiments can even increase randomness in cases where choice is not entirely free. The concept could increase the usefulness of weakly random sources for more thorough tests of quantum mechanics. First paragraph | Full Text | PDF See also: News and Views by Massar Interferometric measurement of local spin fluctuations in a quantum gas pp455 - 459 Jakob Meineke, Jean-Philippe Brantut, David Stadler, Torben Muller, Henning Moritz and Tilman Esslinger doi:10.1038/nphys2280 An interferometric implementation of Young's double-slit experiment is used to probe quantum correlations that are manifest in the distribution of local spin fluctuations in a two-component degenerate Fermi gas. First paragraph | Full Text | PDF Surface conduction of topological Dirac electrons in bulk insulating Bi2Se3  pp460 - 464 Dohun Kim, Sungjae Cho, Nicholas P. Butch, Paul Syers, Kevin Kirshenbaum, Shaffique Adam, Johnpierre Paglione and Michael S. Fuhrer doi:10.1038/nphys2286 Despite their name, the bulk electrical conductivity of most topological insulators is relatively high, masking many of the important characteristics of its protected, surface conducting states. Counter-doping reduces the bulk conductivity of Bi2Se3 significantly, allowing these surface states and their properties to be clearly identified. First paragraph | Full Text | PDF Visualization of geometric influences on proximity effects in heterogeneous superconductor thin films pp465 - 470 Jungdae Kim, Victor Chua, Gregory A. Fiete, Hyoungdo Nam, Allan H. MacDonald and Chih-Kang Shih doi:10.1038/nphys2287 The proximity effect enables the injection of Cooper pairs from a superconductor into a normal metal, but they usually do not travel far into the metal. A study of the propagation of Cooper pairs from irregularly shaped superconducting islands on a metal film finds that they can travel further than expected for certain island geometries. First paragraph | Full Text | PDF Observation of the kinetic condensation of classical waves pp471 - 475 Can Sun, Shu Jia, Christopher Barsi, Sergio Rica, Antonio Picozzi and Jason W. Fleischer doi:10.1038/nphys2278 Bose-Einstein condensation is usually considered to be an inherently quantum mechanical phenomenon. An observation of the condensation in a classical system of light waves in a nonlinear crystal demonstrates that it is a general wave-mechanical phenomenon. First paragraph | Full Text | PDF See also: News and Views by Conti Articles Top On the reality of the quantum state pp476 - 479 Matthew F. Pusey, Jonathan Barrett and Terry Rudolph doi:10.1038/nphys2309 A no-go theorem on the reality of the quantum state is demonstrated. If the quantum state merely represents information about the physical state of a system, then predictions that contradict those of quantum theory are obtained. Abstract | Full Text | PDF See also: News and Views by Aaronson Experimental delayed-choice entanglement swapping pp480 - 485 Xiao-song Ma, Stefan Zotter, Johannes Kofler, Rupert Ursin, Thomas Jennewein, Časlav Brukner and Anton Zeilinger doi:10.1038/nphys2294 In 2000, Asher Peres put forward the paradoxical idea that entanglement could be produced after the entangled particles have been measured, even if they no longer exist. Researchers now experimentally demonstrate this idea using four photons. Abstract | Full Text | PDF Spin polarization of the quantum spin Hall edge states pp486 - 491 Christoph Brüne, Andreas Roth, Hartmut Buhmann, Ewelina M. Hankiewicz, Laurens W. Molenkamp, Joseph Maciejko, Xiao-Liang Qi and Shou-Cheng Zhang doi:10.1038/nphys2322 The quantum spin Hall state is predicted to consist of two oppositely polarized spin currents travelling in opposite directions around the edges of a topological insulator. Non-local measurements of the transport in HgTe quantum wells confirm the polarized nature of these edge states. Abstract | Full Text | PDF See also: News and Views by Zhou & Zhang Electric-field-induced ferromagnetic resonance excitation in an ultrathin ferromagnetic metal layer pp492 - 497 Takayuki Nozaki, Yoichi Shiota, Shinji Miwa, Shinichi Murakami, Frédéric Bonell, Shota Ishibashi, Hitoshi Kubota, Kay Yakushiji, Takeshi Saruya, Akio Fukushima, Shinji Yuasa, Teruya Shinjo and Yoshishige Suzuki doi:10.1038/nphys2298 Ferromagnetic resonance excitations offer a means to coherently manipulate the spin dynamics of spintronic devices and systems. A demonstration of the ability to control these excitations with electric fields alone could drastically reduce the power consumption of these devices. Abstract | Full Text | PDF Atom-by-atom engineering and magnetometry of tailored nanomagnets pp497 - 503 Alexander Ako Khajetoorians, Jens Wiebe, Bruno Chilian, Samir Lounis, Stefan Blugel and Roland Wiesendanger doi:10.1038/nphys2299 Small clusters of magnetic atoms can behave in very different ways to those same atoms in bulk. Arranging iron atoms one by one into complex but well-defined patterns on a copper surface enables the construction of nanoscale magnetic structures with tailored characteristics. Abstract | Full Text | PDF Corrigendum Top Phonon-cavity electromechanics p503 I. Mahboob, K. Nishiguchi, H. Okamoto and H. Yamaguchi doi:10.1038/nphys2329 Full Text | PDF Top Advertisement Light: Science & Applications (LSA) - Introducing the Research Summary LSA offers professionally written Research Summaries that provide an easily understood synopsis of the work and will accompany many of the articles published in the Journal.  Browse research summaries!   Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

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