New Journal of Physics The open-access journal for physics www.njp.org Highlights of 2011 Advancing physics research globally NJP is evolving We won’t just publish your work; we will help you share your research with others in new and innovative ways. By featuring the people WIth a NJP vIdeO abstract yOu caN: behind the science, video abstracts have •showcase your research the potential to convey •engage with your community inspiration and •raise your visibility enthusiasm, and thereby the significance •make an impact of scientific results, beyond the concise text By including a video abstract you can enhance the visibility of your of articles. article by more than five times. In 2011, NJP articles with video abstracts were downloaded (on average) more than1400 times each. Achim Kempf, Waterloo University, Canada To see the latest video abstracts and for more information visit www.njp.org/videoabstracts. New Journal of Physics: Highlights of 2011 New Journal of Physics – extending the global reach of physics research ImPact Factor 1,500,000 At a time when more and more journals are introducing open-access options in response to increasing demand from researchers, librarians, funding bodies and the general 1,000,0003.849* * As listed in ISI®’s 2010 Science public, New Journal of Physics (NJP) is proud to have the highest Impact Factor of all Citation Index Journal citation reports 500,000 ‘gold’ open-access journals in physics. 0 Providing a showcase for just some of our article highlights of the last 12 months, the 2007 2008 2009 2010 2011 citation performance abstracts collected here have been selected by our editorial team as a reflection of the 4.5 Impact Factor 1.4 quality, and the subject and geographical diversity of NJP’s broad coverage in 2011. Immediacy Index 4.0 1.2 Immediacy Index 3.5 1.0 3.0 NJP’s priority remains to provide permanently free access to research of the highest 2.5 0.8 quality, in the latest and most cutting-edge areas of physics. In addition to optimizing the 2.0 0.6 Impact Factor 1.5 reach and dissemination of research, we also recognize the vital role that NJP should play 0.4 1.0 0.5 0.2 in raising the visibility and profile of our authors themselves. 0 0 2006 2007 2008 2009 2010 As such, in 2011 we introduced video abstracts – a unique new integrated content stream that gives all authors the opportunity to go beyond the constraints of the written article to personally present the importance of their work to the journal’s global audience. cover image: ‘Green rings’ from Several of the highlights featured in this collection feature author videos (look out for the stock library. QR codes), which to date have been watched more than 25 000 times worldwide. Already an early success, we look forward to seeing more of our authors take advantage of this new service in 2012. North America Korea China Spain Germany Rest of Europe UK Rest of Asia A second major development aimed at improving our overall user experience has been Japan Central/South America France Australasia India Middle East the introduction of a new and enhanced format for articles. Implemented as part of the Italy Africa ongoing IOPscience ‘Article Evolution’ project, we are committed to optimizing our online delivery in response to the feedback we receive from you, our authors and readers. In addition to new and improved online services, in 2012 you can also look forward to NJP continuing to publish in the very latest areas of physics through a new series of invited focus issue collections that will include ‘Quantum Spin Liquids’, ‘Graphene Optics’, ‘Optomechanics’, ‘Physics for Biology at a Mesoscopic Scale’ and ‘Quantum Tomography’ (to name just a few). NJP’s success is due entirely to the fantastic support of the physics community worldwide. On behalf of the journal I would like to thank all of our Board members, authors, referees, partners and readers for their vital contribution to the journal’s ongoing development. And finally, thank you for your support. I hope you will find this collection of interest and that you will consider NJP as the journal of choice for your next paper. Eberhard Bodenschatz Editor-in-Chief New Journal of Physics E-mail [email protected] Web www.njp.org New Journal of Physics 3 New Journal of Physics: Highlights of 2011 W1,500,000Hy PUBLISH WItH NJP? 1,000,000 500,000 annual downloads MAKE aN ImPACT BE VISIBLE 1,500,0000 2007 2008 2009 2010 2011 NJP has the highest Impact Factor As an open-access journal, NJP has 1 of all gold open-access journals 2 worldwide visibility across all fields 1,000,0004.5 Impact Factor 1.4 in physics: our 2010 ISI® Science in physics. In 2011, NJP papers were Immediacy Index 4.0 1.2 Citation Index Impact Factor is 3.849. downloaded more than 1.47 million 3.5 1.0 3.0500,000 times. Full-text downloads 2.5 0.8 2.0 0.6 1.5 0 BE FaSt BE tHE BESt 2007 2008 2009 2010 20110.4 1.0 0.5 0.2 On average authors receive referee Every submission to NJP undergoes 4.50 Impact Factor 1.40 2006 2007 2008 2009 2010 reports within 35 days of submitting a pre-review assessment from Geographical4.0 Immediacy distribution Index of readers 3 4 1.2 the Editorial Board and our Board 3.5 their article. 1.0 3.0 members offer expert advice at every 2.5 0.8 stage of the review process. 2.0 0.6 1.5 0.4 1.0 0.5 0.2 0 0 aND tHAT’S NOT aLL… 2006 2007 2008 2009 2010 Take advantage of the other author benefits that NJP offers: North America Korea China Spain Germany Rest of Europe 1. no article length limits; UK Rest of Asia Japan Central/South America 2. author-friendly copyright; France Australasia India Middle East 3. increased exposure with video abstracts; Italy Africa 4. new enhanced HTML through Article Evolution. To find out more about publishing with NJP, please visit www.njp.org or contact the journal team at North America Korea [email protected]. China Spain Germany Rest of Europe UK Rest of Asia Japan Central/South America France Australasia India Middle East Italy Africa @NJPhysics JoUrNaL tEAM elena belsole Joanna bewley Justin clark Paul Fishman Kryssa roycroft tim smith Publisher Publishing Administrator Production Editor Production Editor Publishing Administrator Senior Publisher Marric stephens ceri-Wyn thomas emma Watkins Art direction: Andrew Giaquinto; design and production: Louise Unwin. Publishing Editor Publishing Editor Marketing Executive Copyright © 2012 by Institute of Physics and Deutsche Physikalische Gesellschaft. 4 New Journal of Physics New Journal of Physics: Highlights of 2011 c o N t EN t S atomic and molecular physics Characteristics of integrated magneto-optical traps for atom chips 9 s Pollock, J P cotter, a Laliotis, F ramirez-Martinez and e a hinds Universal contact of strongly interacting fermions at finite temperatures 9 hui hu, Xia-Ji Liu and Peter d drummond Resonant Hawking radiation in Bose–Einstein condensates 9 I Zapata, M albert, r Parentani and F sols Angle-resolved electron spectroscopy of the resonant Auger decay in xenon with meV energy resolution 10 Johan söderström, andreas Lindblad, alexei N Grum-Grzhimailo, Oksana travnikova, christophe Nicolas, svante svensson and catalin Miron Low-energy electron point projection microscopy of suspended graphene, the ultimate ‘microscope slide’ 10 J y Mutus, L Livadaru, J t robinson, r urban, M h salomons, M cloutier and r a Wolkow Regimes of classical transport of cold gases in a two-dimensional anisotropic disorder 10 L Pezzé, M robert-de-saint-vincent, t bourdel, J-P brantut, b allard, t Plisson, a aspect, P bouyer and L sanchez-Palencia Normal modes of trapped ions in the presence of anharmonic trap potentials 11 J P home, d hanneke, J d Jost, d Leibfried and d J Wineland optics and imaging Proposal for an optomechanical traveling wave phonon–photon translator 11 amir h safavi-Naeini and Oskar Painter Evidence for subwavelength imaging with positive refraction 12 yun Gui Ma, sahar sahebdivan, c K Ong, tomáš tyc and ulf Leonhardt Nonlocal restoration of two-mode squeezing in the presence of strong optical loss 12 russell bloomer, Matthew Pysher and Olivier Pfister Near-, mesoscopic and far-field regimes of a subwavelength Young’s double-slit 12 J Le Perchec, a barbara and P Quémerais Invisibility cloaking without superluminal propagation 13 Janos Perczel, tomáš tyc and ulf Leonhardt Quantum optics and lasers Trapped ions in optical lattices for probing oscillator chain models 13 thaned Pruttivarasin, Michael ramm, Ishan talukdar, axel Kreuter and hartmut häffner Laser interferometry with translucent and absorbing mechanical oscillators 13 d Friedrich, h Kaufer, t Westphal, K yamamoto, a sawadsky, F ya Khalili, s L danilishin, s Goßler, K danzmann and r schnabel Two-photon quantum walks in an elliptical direct-write waveguide array 14 J O Owens, M a broome, d N biggerstaff, M e Goggin, a Fedrizzi, t Linjordet, M ams, G d Marshall, J twamley, M J Withford and a G White p New Journal of Physics 5 New Journal of Physics: Highlights of 2011 All-optical switching of photonic entanglement 14 Matthew a hall, Joseph b altepeter and Prem Kumar Attosecond control of electron–ion recollision in high harmonic generation 14 G Gademann, F Kelkensberg, W K siu, P Johnsson, M b Gaarde, K J schafer and M J J vrakking Demonstration of integrated microscale optics in surface-electrode ion traps 15 J true Merrill, curtis volin, david Landgren, Jason M amini, Kenneth Wright, s charles doret et al condensed matter Monopole defects and magnetic Coulomb blockade 15 sam Ladak, dan read, tolek tyliszczak, Will r branford and Lesley F cohen Antimagnets: