Nature Photonics contents June 2018 Volume 12 Number 6

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Advertisement High performance event timer:  discover PicoQuant's latest device with 4 or 8 independent detection channels. The MultiHarp 150 combines high data throughput with outstanding picosecond timing precision and ultra short dead times, making it the ideal device for applications requiring high precision photon counting, like quantum optics and advanced time-resolved microscopy. TABLE OF CONTENTS June 2018 Volume 12, Issue 6 Editorial Books & Arts Research Highlights News & Views Letters Articles   Advertisement   High-Performance Lasers for Quantum Experiments   TOPTICA's tunable diode lasers are ideal tools for demanding tasks in modern quantum optics experiments. They are available with stabilized wavelengths and narrow linewidth, ultrawide mode-hop-free tuning ranges and intelligent control features. With the help of frequency-conversion and amplifier systems, these lasers cover an ultrabroad spectrum reaching from 190 to 3500 nm with high output power up to 4 Watts.    Advertisement Do you have a career question?  The Naturejobs podcast features one-on-one Q&As, panel discussions and other exclusive content to help scientists with their careers. Hosted on the Naturejobs blog, the podcast is also available on iTunes and Soundcloud. Listen today!   Editorial   Towards systems-on-a-chip    p311 doi:10.1038/s41566-018-0191-7 Books & Arts   On our bookshelf    p312 Rachel Won doi:10.1038/s41566-018-0180-x Advertisement   High Voltage Power Supplies for Mission-Critical Applications From micro-sized, PCB mounted supplies to modular and rack-mounted options, customers have greater choice from a single supplier for all their high voltage needs - whether for general purpose requirements or application specific designs. Browse our product portfolio with Advanced Energy's Quick Select Product Guide.   Research Highlights   Ion string qubits    p313 Noriaki Horiuchi doi:10.1038/s41566-018-0183-7 Intracellular movies    p313 Oliver Graydon doi:10.1038/s41566-018-0184-6 Energy-efficient detector    p313 Oliver Graydon doi:10.1038/s41566-018-0185-5 Synthesizer on a chip    p313 Rachel Won doi:10.1038/s41566-018-0186-4 Nature Photonics JOBS of the week PhD position in Applied Physics with focus on Nanooptics and Organic Electronics Link�ping University (LiU) Research Fellow - Faculty of Science, Physics Department University of Auckland Research Associate in Automated Optical Microscopy University College London (UCL) Postdoctoral Fellow - Research Fellow Australian National University More Science jobs from Nature Photonics EVENT SPIE Optics + Photonics Exhibition 2018 21.08.18 San Diego, USA More science events from Advertisement Princeton University, Princeton Institute for the Science and Technology of Materials (PRISM), Nature Communications, Nature Materials, Nature Structural & Molecular Biology present: Princeton — Nature Conference: Frontiers in Electron Microscopy for the Physical and Life Sciences July 11-13, 2018, Princeton University, Princeton, NJ, USA  Register now to secure your place.     News & Views   Instability yields bright gamma emission    pp314 - 315 Andrea Macchi & Francesco Pegoraro doi:10.1038/s41566-018-0181-9 Payload success    p315 Oliver Graydon doi:10.1038/s41566-018-0182-8 Complete polarization control    pp316 - 317 Emma R. Simpson & Johan Mauritsson doi:10.1038/s41566-018-0166-8 Global position by polarization    p318 Oliver Graydon doi:10.1038/s41566-018-0187-3 Letters   Giant collimated gamma-ray flashes    pp319 - 323 Alberto Benedetti, Matteo Tamburini & Christoph H. Keitel doi:10.1038/s41566-018-0139-y The generation of gamma-ray flashes by dense ultra-relativistic electron beams travelling across a millimetre-thickness solid conductor is theoretically investigated. Peak brilliance above 1025 photons s-1 mrad-2 mm-2 per 0.1% bandwidth is expected.   Articles   Vacuum Bloch–Siegert shift in Landau polaritons with ultra-high cooperativity    pp324 - 329 Xinwei Li, Motoaki Bamba, Qi Zhang, Saeed Fallahi, Geoff C. Gardner et al. doi:10.1038/s41566-018-0153-0 The Bloch–Siegert shift—a strong-field phenomenon that implies a failure of the rotating-wave approximation—is observed in the polariton dispersion diagram of a two-dimensional electron gas system inside a high-Q terahertz photonic crystal cavity.   Mid-infrared frequency comb via coherent dispersive wave generation in silicon nitride nanophotonic waveguides    pp330 - 335 Hairun Guo, Clemens Herkommer, Adrien Billat, Davide Grassani, Chuankun Zhang et al. doi:10.1038/s41566-018-0144-1 The direct generation of mid-infrared optical frequency combs in the region 2.5–4.0 μm from a 1.55 μm conventional and compact erbium-fibre-based femtosecond laser is demonstrated via coherent dispersive wave generation in silicon nitride nanophotonic waveguides.   Segmented terahertz electron accelerator and manipulator (STEAM)    pp336 - 342 Dongfang Zhang, Arya Fallahi, Michael Hemmer, Xiaojun Wu, Moein Fakhari et al. doi:10.1038/s41566-018-0138-z By sending few-microjoule single-cycle terahertz pulses to a segmented terahertz electron accelerator and manipulator, 70 MV m–1 peak acceleration fields, 2 kT m–1 focusing gradients, 140 μrad fs–1 streaking gradient and bunch compression to 100 fs are achieved.   Hydroxypropyl cellulose photonic architectures by soft nanoimprinting lithography    pp343 - 348 André Espinha, Camilla Dore, Cristiano Matricardi, Maria Isabel Alonso, Alejandro R. Goñi et al. doi:10.1038/s41566-018-0152-1 Biodegradable cellulose-based photonic and plasmonic architectures are fabricated via soft nanoimprinting lithography, and are used for structural colour generation, photoluminescence enhancement and as disposable surface-enhanced Raman scattering substrates.   Polarization control of isolated high-harmonic pulses    pp349 - 354 Pei-Chi Huang, Carlos Hernández-García, Jen-Ting Huang, Po-Yao Huang, Chih-Hsuan Lu et al. doi:10.1038/s41566-018-0145-0 Circularly polarized isolated extreme-ultraviolet pulses are generated by exploiting non-collinear high- harmonic generation driven by two counter-rotating few-cycle laser beams. The numerical simulation predicts a linear chirp of 330 attoseconds.   Hybrid perovskite films approaching the radiative limit with over 90% photoluminescence quantum efficiency    pp355 - 361 Ian L. Braly, Dane W. deQuilettes, Luis M. Pazos-Outón, Sven Burke, Mark E. Ziffer et al. doi:10.1038/s41566-018-0154-z Surface treatment is shown to yield passivated perovskite films with very high quasi-Fermi level splitting and internal photoluminescence quantum efficiency, indicating that further improvements in the performance of perovskite optoelectronics should be feasible.   Continuous transition between weak and ultrastrong coupling through exceptional points in carbon nanotube microcavity exciton–polaritons    pp362 - 367 Weilu Gao, Xinwei Li, Motoaki Bamba & Junichiro Kono doi:10.1038/s41566-018-0157-9 A microcavity exciton–polariton system based on aligned and packed single-walled carbon nanotubes exhibits ultrastrong coupling. The coupling strength is polarization sensitive. The record high value of vacuum Rabi splitting, 329 meV, is reported.   Adaptive wavefront shaping for controlling nonlinear multimode interactions in optical fibres    pp368 - 374 Omer Tzang, Antonio M. Caravaca-Aguirre, Kelvin Wagner & Rafael Piestun doi:10.1038/s41566-018-0167-7 The combination of a spatial light modulator at the fibre input, real-time spectral feedback and a genetic algorithm optimization controls the nonlinear stimulated Raman scattering cascade and its interplay with four-wave mixing in multimode fibres.   Advertisement Nature Briefing is an essential round-up of science news, opinion and analysis, free in your inbox every weekday. With Nature Briefing, we'll keep you updated on the latest research, so you can focus on yours. Click here to sign up.   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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