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Advertisement Collection: Entrepreneurship in Quantum Technology Nature want to help inspire and educate today's young scientists in quantum physics to become tomorrow's quantum-technology entrepreneurs. This Collection presents advice for young quantum technology entrepreneurs and features about commercialisation of the technologies.  Access the Collection online TABLE OF CONTENTS May 2017 Volume 13, Issue 5 Editorial Thesis Books and Arts Research Highlights News and Views Progress Article Letters Articles Measure for Measure Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement All content now free to access including archives! Nature Communications is an open access journal that publishes high-quality research from all areas of the natural sciences. Papers published by the journal represent important advances of significance to specialists within each subject area including physics. Visit the website to explore ALL the content available within your field.   Editorial Top Meet the editors   p415 doi:10.1038/nphys4137 Like all journals based on Nature's editorial philosophy, Nature Physics relies on a dedicated team of full-time editors. We briefly describe who they are and what they do. Thesis Top Nanotube mystery   p416 Mark Buchanan doi:10.1038/nphys4127 Books and Arts Top Dance: The light fantastic   p417 Elizaveta Dubrovina and Lina Persechini doi:10.1038/nphys4115 Television: Big brains on the small screen   p418 Abigail Klopper doi:10.1038/nphys4125 Research Highlights Top Primordial Black Holes: Still missing | Ferroelectrics: Learn the hard way | Quantum Mechanics: Indefinite causality | Membrane Fission: Crowd control | Pattern Formation: Lizard computer News and Views Top Machine learning: New tool in the box   pp420 - 421 Lenka Zdeborová doi:10.1038/nphys4053 A recent burst of activity in applying machine learning to tackle fundamental questions in physics suggests that associated techniques may soon become as common in physics as numerical simulations or calculus. See also: Letter by Carrasquilla & Melko | Letter by van Nieuwenburg et al. Crystallization: Brought to the surface   pp421 - 422 Rajesh Ganapathy and Ajay K. Sood doi:10.1038/nphys4057 There is growing evidence for the kinetics of homogeneous nucleation being a multi-step process. Colloid experiments and simulations now suggest that heterogeneous nucleation is no exception. See also: Article by Arai & Tanaka Supernovae: Memories of a dying star   pp422 - 423 Norbert Langer doi:10.1038/nphys4048 The spectroscopic observations of the very early stages of a supernova provide a glimpse into its environment prior to the explosion. See also: Article by Yaron et al. Physics JOBS of the week Professor or Associate Professor in Physics University College of Southeast Norway Second Call - 15 PhD Positions in Physics Marie Curie ITN SEPOMO Faculty Positions in Physics Southern University of Science and Technology (SUSTech) More Science jobs from Physics EVENT 2nd International Conference for Computational Physics, Mathematics and Applications ( ICCPMA 2017 ) 24.11.17 Zurich, Switzerland More science events from Progress Article Top Equilibration and order in quantum Floquet matter   pp424 - 428 R. Moessner and S. L. Sondhi doi:10.1038/nphys4106 Over the past decade, remarkable progress has occurred in the physics of closed quantum systems away from equilibrium, culminating in the recent experimental realization of so-called time crystals. This Progress Article surveys these developments. Letters Top Machine learning phases of matter   pp431 - 434 Juan Carrasquilla and Roger G. Melko doi:10.1038/nphys4035 The success of machine learning techniques in handling big data sets proves ideal for classifying condensed-matter phases and phase transitions. The technique is even amenable to detecting non-trivial states lacking in conventional order. See also: Letter by van Nieuwenburg et al. | News and Views by Zdeborova Learning phase transitions by confusion   pp435 - 439 Evert P. L. van Nieuwenburg, Ye-Hua Liu and Sebastian D. Huber doi:10.1038/nphys4037 A neural-network technique can exploit the power of machine learning to mine the exponentially large data sets characterizing the state space of condensed-matter systems. Topological transitions and many-body localization are first on the list. See also: Letter by Carrasquilla & Melko | News and Views by Zdeborova Plasma holograms for ultrahigh-intensity optics   pp440 - 443 A. Leblanc, A. Denoeud, L. Chopineau, G. Mennerat, Ph. Martin et al. doi:10.1038/nphys4007 Plasma optics enables the manipulation of highly intense laser beams. Now, plasma holograms, involving the creation of a modulated plasma surface on a solid target, are reported — for example, plasma hologram fork gratings produce optical vortices. Switching chiral solitons for algebraic operation of topological quaternary digits   pp444 - 447 Tae-Hwan Kim, Sangmo Cheon and Han Woong Yeom doi:10.1038/nphys4026 A demonstration of switching between solitons of different chirality in a one-dimensional electronic system shows how topological excitations can be used to realize non-trivial algebraic operations. Magnetic domain wall depinning assisted by spin wave bursts   pp448 - 454 Seonghoon Woo, Tristan Delaney and Geoffrey S. D. Beach doi:10.1038/nphys4022 Experiments show how domain walls can act as reservoirs of exchange energy that can be used to controllably launch or detect spin waves in ferromagnetic nanowires. Intertwined superfluid and density wave order in two-dimensional 4He   pp455 - 459 Ján Nyéki, Anastasia Phillis, Andrew Ho, Derek Lee, Piers Coleman et al. doi:10.1038/nphys4023 A detailed analysis of low-temperature torsional oscillation measurements on two-dimensional 4He reveals evidence for intertwined superfluid and density wave order in this system. Advertisement An open access, online-only, multidisciplinary research journal dedicated to publishing the most important scientific advances in the life sciences, physical sciences, and engineering fields that are facilitated by spaceflight and analogue platforms. Explore the benefits of submitting your next research article.   Articles Top Periodically driving a many-body localized quantum system   pp460 - 464 Pranjal Bordia, Henrik Luschen, Ulrich Schneider, Michael Knap and Immanuel Bloch doi:10.1038/nphys4020 Many-body localization, which exhibits a fascinating interplay between disorder and interactions, can be studied using ultracold atoms in a quasiperiodic chain. Adding periodic driving makes things even more interesting. Generalized non-reciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering   pp465 - 471 Kejie Fang, Jie Luo, Anja Metelmann, Matthew H. Matheny, Florian Marquardt et al. doi:10.1038/nphys4009 Combining synthetic magnetism and controlled dissipation, researchers created an optomechanical device in which photons and phonons are coupled, enabling non-reciprocal (asymmetric) photon transport and directional amplification. State-resolved attosecond reversible and irreversible dynamics in strong optical fields   pp472 - 478 Mazyar Sabbar, Henry Timmers, Yi-Jen Chen, Allison K. Pymer, Zhi-Heng Loh et al. doi:10.1038/nphys4027 An experimental and theoretical study of the real-time dynamics in strong-field ionization of xenon atoms reveals the previously unknown role of transient ground-state polarization. Transient superconductivity from electronic squeezing of optically pumped phonons   pp479 - 483 Dante M. Kennes, Eli Y. Wilner, David R. Reichman and Andrew J. Millis doi:10.1038/nphys4024 Recent developments in advanced light sources have made it possible to transiently alter the electronic properties of materials by exciting specific atomic vibrations in solids. This study provides a theoretical framework for these experiments. Emergent Dirac fermions and broken symmetries in confined and deconfined phases of Z2 gauge theories   pp484 - 490 Snir Gazit, Mohit Randeria and Ashvin Vishwanath doi:10.1038/nphys4028 Lattice gauge theories are notoriously hard to analyse at finite fermion density, due to the so-called fermion sign problem. A study now shows this can be circumvented for the case of Ising gauge theories. Edge reconstruction in fractional quantum Hall states   pp491 - 496 Ron Sabo, Itamar Gurman, Amir Rosenblatt, Fabien Lafont, Daniel Banitt et al. doi:10.1038/nphys4010 Two challenging questions related to the quantum Hall effect (QHE) are how edge reconstruction works and where the current flows. A new model now gives the answer for two types of QHE states — two separate downstream chiral edge channels are involved. Correlation-enhanced control of wave focusing in disordered media   pp497 - 502 Chia Wei Hsu, Seng Fatt Liew, Arthur Goetschy, Hui Cao and A. Douglas Stone doi:10.1038/nphys4036 Controlled wave propagation in disordered media is a challenge because of scattering processes. Now it is shown that for speckled targets much larger than the wavelength, long-range correlations between the speckles enhance wave propagation control. Surface-assisted single-crystal formation of charged colloids   pp503 - 509 Shunto Arai and Hajime Tanaka doi:10.1038/nphys4034 Controlled crystal growth can be achieved by initiating nucleation on a substrate — but the mechanisms at play are still poorly understood. Experiments and simulations now reveal conditions for the growth of defect-free crystals of charged colloids. See also: News and Views by Ganapathy & Sood Confined dense circumstellar material surrounding a regular type II supernova   pp510 - 517 O. Yaron, D. A. Perley, A. Gal-Yam, J. H. Groh, A. Horesh et al. doi:10.1038/nphys4025 Type II supernova explosions are common, but our understanding of such events is not complete. Such an event was observed just three hours after the explosion started, providing important information about the early stages. See also: News and Views by Langer Measure for Measure Top Deviations from 2   p518 Alberto Moscatelli doi:10.1038/nphys4126 Alberto Moscatelli surveys a series of experiments on the electron g-factor that marked the departure from the Dirac equation and contributed to the development of quantum electrodynamics. Top 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. 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