Nature Photonics contents July 2018 Volume 12 Number 7

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TABLE OF CONTENTS July 2018 Volume 12, Issue 7 Editorial Books & Arts Research Highlights News & Views Letters Articles Amendments & Corrections   Advertisement   Faster than the Fastest HIGHFINESSE wavelength meters offer the highest precision and unmatched speed. They enable measurements with an unrivaled accuracy of 2 MHz, a 200 kHz resolution and up to 76 kHz acquisition speed, covering an extremely broad range of 192 nm to 11 µm. Solid state Fizeau interferometers achieve this ultimate performance which also supports pulsed lasers. Complex experiments with up to eight lasers can be stabilized, such as TOPTICA's tunable diode lasers.   Advertisement Making data more accessible Ying Sun is a multi-award-winning statistician who is inspired by the value of statistics in solving real-world problems. Discover more about Prof. Sun's latest efforts. Read more >>   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   Keeping up the momentum    p375 doi:10.1038/s41566-018-0215-3 Books & Arts   On our bookshelf    p376 Rachel Won doi:10.1038/s41566-018-0207-3 Advertisement nature.com webcasts Nature Research Custom Media presents a webcast on: Optical Trapping of Ion Coulomb Crystals Date: Tuesday, July 31, 2018 Join our webcast to understand the trapping of neutral and charged atoms and how to exploit optically trapped ions to investigate quantum-phase transitions. This webcast has been produced on behalf of the sponsor who retains sole responsibility for content  Register for FREE  Sponsored by: Andor      Research Highlights   Encouraging instability    p377 David F. P. Pile doi:10.1038/s41566-018-0208-2 Twin-field QKD    p377 David F. P. Pile doi:10.1038/s41566-018-0209-1 Attosecond resolution    p377 Noriaki Horiuchi doi:10.1038/s41566-018-0210-8 Molecular sensing    p377 Oliver Graydon doi:10.1038/s41566-018-0211-7 Tunable comb    p377 Rachel Won doi:10.1038/s41566-018-0212-6 Nature Photonics JOBS of the week postdoctoral scientists New York University (NYU) Medical Center Postdoctoral position in Chemistry (NMR-based structural biology) Ume� University - Department of Chemistry Postdoctoral position in Experimental Quantum Plasmonics and Nanophotonics Aalto University Two faculty positions in condensed matter physics with focus on energy and quantum materials University of Amsterdam and VU University Amsterdam PostDoc in Plant Physiology Goethe University Frankfurt am Main. More Science jobs from Nature Photonics EVENT SPIE Optics + Photonics 2018 19.08.18 San Diego, USA More science events from News & Views   Triplet state brightens upconversion    pp378 - 379 Jiajia Zhou & Dayong Jin doi:10.1038/s41566-018-0188-2 Measuring molecular mass with light    pp380 - 381 Kyu Young Han & Taekjip Ha doi:10.1038/s41566-018-0202-8 Paper electronics    p381 Noriaki Horiuchi doi:10.1038/s41566-018-0206-4 Giant anisotropy detected    pp382 - 383 Jian Wang & Kirill Kovnir doi:10.1038/s41566-018-0203-7 Electrically tuned nonlinearity    pp383 - 385 Zhipei Sun doi:10.1038/s41566-018-0201-9 Letters   Phase-matched extreme-ultraviolet frequency-comb generation    pp387 - 391 Gil Porat, Christoph M. Heyl, Stephen B. Schoun, Craig Benko, Nadine Dörre et al. doi:10.1038/s41566-018-0199-z Using high-temperature gas mixtures as the generation medium to increase the translational velocity of Xe atoms through the focus of a femtosecond enhancement cavity, phase-matched extreme-ultraviolet emission at a repetition rate of 77 MHz and with an average power of ~2 mW in a single harmonic order is achieved.   Giant optical anisotropy in a quasi-one-dimensional crystal    pp392 - 396 Shanyuan Niu, Graham Joe, Huan Zhao, Yucheng Zhou, Thomas Orvis et al. doi:10.1038/s41566-018-0189-1 Highly crystalline BaTiS3 has been shown to exhibit record-breaking birefringence of 0.76 in the wavelength range of 7–16 μm. The large anisotropy is a result of its quasi-one-dimensional structure.   Experimental observation of a polarization vortex at an optical bound state in the continuum    pp397 - 401 Hugo M. Doeleman, Francesco Monticone, Wouter den Hollander, Andrea Alù & A. Femius Koenderink doi:10.1038/s41566-018-0177-5 Previous predictions that light radiated by modes around a bound state in the continuum (BIC) condition should exhibit a vortex in the far-field polarization profile are experimentally confirmed. The findings shed light on the origin of BICs.   Articles   Enrichment of molecular antenna triplets amplifies upconverting nanoparticle emission    pp402 - 407 David J. Garfield, Nicholas J. Borys, Samia M. Hamed, Nicole A. Torquato, Cheryl A. Tajon et al. doi:10.1038/s41566-018-0156-x Lanthanide-doped upconverting nanoparticles exhibiting a 33,000 times increase in brightness and a 100 times increase in efficiency over bare upconverting nanoparticles are demonstrated. The findings are relevant in fields from solar energy to biophotonics.   Topological protection of photonic mid-gap defect modes    pp408 - 415 Jiho Noh, Wladimir A. Benalcazar, Sheng Huang, Matthew J. Collins, Kevin P. Chen et al. doi:10.1038/s41566-018-0179-3 Eigenmodes of photonic crystal defects have now been topologically protected in an experimental demonstration that also shows how to minimize the mode volume.   Femtosecond laser crosslinking of the cornea for non-invasive vision correction    pp416 - 422 Chao Wang, Mikhail Fomovsky, Guanxiong Miao, Mariya Zyablitskaya & Sinisa Vukelic doi:10.1038/s41566-018-0174-8 Laser-driven crosslinking of molecules at the cornea offers a non-invasive alternative to surgical correction of the refractive power of the eye.   Control of semiconductor emitter frequency by increasing polariton momenta    pp423 - 429 Yaniv Kurman, Nicholas Rivera, Thomas Christensen, Shai Tsesses, Meir Orenstein et al. doi:10.1038/s41566-018-0176-6 While modifications of emission and absorption rates are commonplace in photonics, similar manipulations of emitter transition frequencies are challenging. Here, 2D polaritons in graphene are predicted to enable non-vertical electronic transitions in a quantum well, controlling the transition frequencies by inducing an effective non-locality.   Gate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene    pp430 - 436 Tao Jiang, Di Huang, Jinluo Cheng, Xiaodong Fan, Zhihong Zhang et al. doi:10.1038/s41566-018-0175-7 Third-harmonic generation and four-wave mixing of light can be enhanced in graphene with gate tuning to adjust the doping level. The findings may lead to new graphene-based nonlinear optoelectronic devices.   Amendments & Corrections   Publisher Correction: Spatiotemporal control of laser intensity    p437 Dustin H. Froula, David Turnbull, Andrew S. Davies, Terrance J. Kessler, Dan Haberberger et al. doi:10.1038/s41566-018-0192-6 Publisher Correction: Universal impedance matching and the perfect transmission of white light    p437 Ku Im, Ji-Hun Kang & Q-Han Park doi:10.1038/s41566-018-0195-3 Publisher Correction: Massively parallel sensing of trace molecules and their isotopologues with broadband subharmonic mid-infrared frequency combs    p437 A. V. Muraviev, V. O. Smolski, Z. E. Loparo & K. L. Vodopyanov doi:10.1038/s41566-018-0196-2 Publisher Correction: View from... MTSA 2017/Tera Nano 8/Opto X Nano: Terahertz surprises    p438 Noriaki Horiuchi doi:10.1038/s41566-018-0197-1 Author Correction: Combined multi-plane phase retrieval and super-resolution optical fluctuation imaging for 4D cell microscopy    p438 A. Descloux, K. S. Grußmayer, E. Bostan, T. Lukes, A. Bouwens et al. doi:10.1038/s41566-018-0198-0 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. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

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