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TABLE OF CONTENTS
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April 2015 Volume 11, Issue 4 |
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| Editorial Commentaries Thesis Research Highlights News and Views Review Letters Articles Erratum Futures | |
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Editorial | Top |
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Getting there p289 doi:10.1038/nphys3312 In our editorial in the April 2007 issue of Nature Physics we looked at the claim of the first demonstration of a commercial quantum computer — D-Wave's 16-qubit Orion. Eight years later, we ponder whether quantum technologies have really become commercial. |
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Commentaries | Top |
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Read the fine print pp291 - 293 Scott Aaronson doi:10.1038/nphys3272 New quantum algorithms promise an exponential speed-up for machine learning, clustering and finding patterns in big data. But to achieve a real speed-up, we need to delve into the details. |
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Quantum optics route to market pp293 - 295 Jürgen Stuhler doi:10.1038/nphys3292 Research in quantum optics has already led to commercial technologies, but the gap between the lab and market products is still large. Looking from the industrial side, one can see ways of bridging this gap. |
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Thesis | Top |
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Wheat from the chaff p296 Mark Buchanan doi:10.1038/nphys3296 |
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Research Highlights | Top |
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To pinch a cloud | Quantum biometrology | On the interface of it | Balls and feathers | Head first |
News and Views | Top |
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Review | Top |
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Superconducting spintronics pp307 - 315 Jacob Linder and Jason W. A. Robinson doi:10.1038/nphys3242 The discovery of spin-triplet Cooper pairs at superconductor/ferromagnet interfaces provides a route for combining superconducting and magnetic orders. Recent advances and challenges in the field of superconducting spintronics are now reviewed. |
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Letters | Top |
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Quantum distillation and confinement of vacancies in a doublon sea pp316 - 320 Lin Xia, Laura A. Zundel, Juan Carrasquilla, Aaron Reinhard, Joshua M. Wilson et al. doi:10.1038/nphys3244 An experiment reveals the dynamics of singly and doubly occupied sites in an atomic Bose gas in a one-dimensional optical lattice, which may provide a better understanding of thermalization and quantum correlations in many-body systems.
See also: News and Views by Porto |
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Modulated magnetism in PrPtAl pp321 - 327 Gino Abdul-Jabbar, Dmitry A. Sokolov, Christopher D. O'Neill, Christopher Stock, Didier Wermeille et al. doi:10.1038/nphys3238 A comprehensive experimental investigation of a PrPtAl single crystal concludes that it displays modulated magnetic order driven by quantum critical phenomena. |
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Orbital textures and charge density waves in transition metal dichalcogenides pp328 - 331 T. Ritschel, J. Trinckauf, K. Koepernik, B. Buüchner, M. v. Zimmermann et al. doi:10.1038/nphys3267 A theoretical and experimental study reveals the relation between charge density waves and orbital textures for different stackings in a two-dimensional layered material. |
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Direct observation of Josephson vortex cores pp332 - 337 Dimitri Roditchev, Christophe Brun, Lise Serrier-Garcia, Juan Carlos Cuevas, Vagner Henrique Loiola Bessa et al. doi:10.1038/nphys3240 Josephson vortices are circulating supercurrents with an inner structure that is challenging to probe experimentally. Scanning tunnelling microscopy now shows that such vortices contain non-superconducting cores. |
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Subnanometre-wide electron channels protected by topology pp338 - 343 Christian Pauly, Bertold Rasche, Klaus Koepernik, Marcus Liebmann, Marco Pratzer et al. doi:10.1038/nphys3264 Topologically protected states with a natural helicity are shown to form at step edges, which can be created with subnanometre precision in a weak topological insulator using atomic force microscopy. |
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A Planck-scale limit on spacetime fuzziness and stochastic Lorentz invariance violation pp344 - 346 Vlasios Vasileiou, Jonathan Granot, Tsvi Piran and Giovanni Amelino-Camelia doi:10.1038/nphys3270 Gamma-ray bursts can be used to test for the presence of spacetime foam—postulated in theories of quantum gravity. Quantum fluctuations would cause the photon speeds to vary, leading to 'fuzziness' and, consequently, Lorentz invariance violation.
See also: News and Views by Jacholkowska |
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Articles | Top |
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Even-denominator fractional quantum Hall physics in ZnO pp347 - 351 J. Falson, D. Maryenko, B. Friess, D. Zhang, Y. Kozuka et al. doi:10.1038/nphys3259 The fractional quantum Hall effect, occurring for rational Landau-level filling factors, is commonly observed in GaAs heterostructures. Now, unusual even-denominator fractional quantum Hall states are reported for an oxide 2D electron system.
See also: News and Views by Dean |
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Evidence for conical intersection dynamics mediating ultrafast singlet exciton fission pp352 - 357 Andrew J. Musser, Matz Liebel, Christoph Schnedermann, Torsten Wende, Tom B. Kehoe et al. doi:10.1038/nphys3241 A vibrational wavepacket generated in a spin singlet is shown to be transferable to spin triplets during singlet fission in organic semiconductors, providing a link between multi-molecular singlet fission and single-molecular internal conversion.
See also: News and Views by Van Voorhis |
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Triggering extreme events at the nanoscale in photonic seas pp358 - 363 C. Liu, R. E. C. van der Wel, N. Rotenberg, L. Kuipers, T. F. Krauss et al. doi:10.1038/nphys3263 Rogue waves in a sea of photons can localize light beyond the diffraction limit, but their rarity makes them difficult to study. These events can now be controllably triggered in a photonic crystal resonator. |
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Erratum | Top |
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Erratum: Visualization of geometric influences on proximity effects in heterogeneous superconductor thin films p363 Jungdae Kim, Victor Chua, Gregory A. Fiete, Hyoungdo Nam, Allan H. MacDonald et al. doi:10.1038/nphys3300 |
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Futures | Top |
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Better late p364 J. Kyle Turner doi:10.1038/nphys3310 A wealth of possibilities. |
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