Nature Physics Janaury Issue

TABLE OF CONTENTS January 2013 Volume 9, Issue 1 Editorials Thesis Research Highlights News and Views Review Letters Articles Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement E-MRS Conference Proceedings are NOW LIVE on Scientific Reports Symposium N & O E-MRS 2012 Spring Meeting   Editorials Top A life among the stars   p1 doi:10.1038/nphys2536 Sir Patrick Moore, presenter of The Sky at Night for 55 years, has died. Work in progress   p1 doi:10.1038/nphys2538 Preparations for the construction of an international linear collider have reached another milestone — but is the way ahead clear? Thesis Top Gamble with time   p3 Mark Buchanan doi:10.1038/nphys2520 Research Highlights Top Bottoms down | On the spot and on the move | Come together | Quantized attraction | Dust to dust to dust News and Views Top Photonic qubits: A quantum delivery note   pp5 - 6 A. I. Lvovsky doi:10.1038/nphys2517 A technique for detecting the presence of a photon without destroying the quantum message it carries could ultimately lead to a loophole-free test of quantum non-locality. See also: Letter by Kocsis et al. Astronomy: Three for two   p6 May Chiao doi:10.1038/nphys2521 Physics of water: Stretched to the limit   pp7 - 8 Pablo G. Debenedetti doi:10.1038/nphys2496 Liquid water expands when heated — or cooled — away from a particular temperature that increases when the fluid is stretched. Experiments on water under extreme tension now enable tracking of this distinctive behaviour well into the negative-pressure domain. See also: Letter by Azouzi et al. Spin ice: Flaws curb the flow   pp8 - 9 Peter Holdsworth doi:10.1038/nphys2495 The idea of monopoles in spin ice has enjoyed much success in the intermediate temperature regime. Low-temperature measurements now point to the importance of surfaces and impurities in monopole dynamics, in providing extrinsic resistance for monopole currents. See also: Letter by Revell et al. Ultrafast phenomena: Attosecond beacons   p9 Iulia Georgescu doi:10.1038/nphys2522 Physics JOBS of the week Post-Doctoral Fellow The University of Kansas Medical Center PhD Student Inverse modeling of magnetic fields in nanocrystals Forschungszentrum Juelich Postdoctoral Research Associate Shanghai Jiao Tong University Post-Doctoral Research Worker in MR Physics King's College London (Institute of Psychiatry) Physics teacher Campus Moragete More Science jobs from Physics EVENT Annual International Conference on Optoelectronics, Photonics & Applied Physics (OPAP 2013) 4th Feb - 5th Feb 2013 Singapore More science events from Review Top Quantum biology   pp10 - 18 Neill Lambert, Yueh-Nan Chen, Yuan-Chung Cheng, Che-Ming Li, Guang-Yin Chen and Franco Nori doi:10.1038/nphys2474 Could biological systems have evolved to find the optimal quantum solutions to the problems thrown at them by nature? This Review presents an overview of the possible quantum effects seen in photosynthesis, avian magnetoreception and several other biological systems. Letters Top Three-photon energy-time entanglement   pp19 - 22 L. K. Shalm, D. R. Hamel, Z. Yan, C. Simon, K. J. Resch and T. Jennewein doi:10.1038/nphys2492 Many-particle entangled states and entanglement between continuous properties are valuable resources for quantum information, but are notoriously difficult to generate. An experiment now entangles the energy and emission times of three photons, creating generalized Einstein–Podolsky–Rosen correlations. Heralded noiseless amplification of a photon polarization qubit   pp23 - 28 S. Kocsis, G. Y. Xiang, T. C. Ralph and G. J. Pryde doi:10.1038/nphys2469 Long-distance quantum communication is limited by optical absorption and scattering. A noiseless amplifier for photonic qubits coherently encoded across two optical modes is now demonstrated, which could combat this negative effect. The method enabled a fivefold increase in the transmission fidelity of the polarization state of a single photon. See also: News and Views by Lvovsky Demonstration of entanglement-by-measurement of solid-state qubits   pp29 - 33 Wolfgang Pfaff, Tim H. Taminiau, Lucio Robledo, Hannes Bernien, Matthew Markham, Daniel J. Twitchen and Ronald Hanson doi:10.1038/nphys2444 Entanglement is an important resource in quantum-enhanced technologies, but it is difficult to generate, especially in solid-state systems. An experiment now demonstrates the entanglement of two nuclear spins via a parity measurement of the electron spin in a nitrogen-vacancy centre in diamond. Evidence of impurity and boundary effects on magnetic monopole dynamics in spin ice   pp34 - 37 H. M. Revell, L. R. Yaraskavitch, J. D. Mason, K. A. Ross, H. M. L. Noad, H. A. Dabkowska, B. D. Gaulin, P. Henelius and J. B. Kycia doi:10.1038/nphys2466 In the highly degenerate spin-ice ground state, flipped spins give rise to magnetic charges, or monopoles, which form a measurable current in a magnetic field. The low-temperature relaxation dynamics of spin-ice materials now reveal that defects can impede monopole flow—creating a magnetic analogue of electrical resistance. See also: News and Views by Holdsworth A coherent picture of water at extreme negative pressure   pp38 - 41 Mouna El Mekki Azouzi, Claire Ramboz, Jean-François Lenain and Frédéric Caupin doi:10.1038/nphys2475 Liquid water inclusions in quartz can withstand negative pressures in excess of -100 MPa. Other techniques report much lower thresholds—suggesting that water in inclusions is stabilized by impurity effects. Experiments on a single inclusion in quartz now provide evidence consistent with a homogeneous mechanism for cavitation. See also: News and Views by Debenedetti Articles Top Close relationship between superconductivity and the bosonic mode in Ba0.6K0.4Fe2As2 and Na(Fe0.975Co0.025)As   pp42 - 48 Zhenyu Wang, Huan Yang, Delong Fang, Bing Shen, Qiang-Hua Wang, Lei Shan, Chenglin Zhang, Pengcheng Dai and Hai-Hu Wen doi:10.1038/nphys2478 Different experimental probes have found different bosonic modes in the iron-based superconductors. A scanning tunnelling spectroscopy study of two separate superconductors now links the tunnelling mode with the 'neutron resonance', both of which vanish when superconductivity disappears. A wide-bandgap metal-semiconductor-metal nanostructure made entirely from graphene   pp49 - 54 J. Hicks, A. Tejeda, A. Taleb-Ibrahimi, M. S. Nevius, F. Wang, K. Shepperd, J. Palmer, F. Bertran, P. Le Fèvre, J. Kunc, W. A. de Heer, C. Berger and E. H. Conrad doi:10.1038/nphys2487 The electronic properties of graphene are spatially controlled from metallic to semiconducting by patterning steps into the underlying silicon carbide substrate. This bottom-up approach could be the basis for integrated graphene electronics. Wave propagation control at the deep subwavelength scale in metamaterials   pp55 - 60 Fabrice Lemoult, Nadege Kaina, Mathias Fink and Geoffroy Lerosey doi:10.1038/nphys2480 Photonic crystals efficiently control wave propagation on a wavelength scale, but this means they can become very large when long wavelengths are involved. Metamaterials made of resonant unit cells can confine and guide waves even at scales far below their wavelength. Top Advertisement Want access to the best research in pure and applied physics? Nature Physics publishes papers of the highest quality and significance whilst covering the entire spectrum of physics. 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