Nature Photonics contents July 2014 Volume 8 Number 7 pp497-576

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Advertisement Analyze Composites and Polymers At-Site Can you perform molecular surface analysis on composites and polymers without destroying the sample? Can you analyze your sample at-site? Agilent's 4300 Handheld FTIR lets you perform powerful surface analysis when are where you need it. Show me proof. TABLE OF CONTENTS July 2014 Volume 8, Issue 7 Editorial Research Highlights News and Views Review Letters Articles Interview Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Scientific Reports Fast and simple publishing! Visit our Guide to Authors page to find out more.  nature.com/scientificreports   Editorial Top A culture of global collaboration   p497 doi:10.1038/nphoton.2014.146 When tackling complex research challenges, photonics researchers often benefit by joining forces with scientists from other countries. Research Highlights Top Graphene photonics: Molecular engine | Silicon photonics: Tackling imperfections | Nanophotonics: Single emitter scanning | Metamaterials: Perfect reflection | Infrared imaging: Nanoscale resolution | Nonlinear optics: Second-harmonic edges | Nonlinear optics: Shock waves | Transformation optics: Nonlinear focusing | Photochromic materials: Switchable absorber | Optofluidics: Laser-assisted assay News and Views Top Cavity quantum electrodynamics: A bundle of photons, please   pp500 - 501 Dmitry V. Strekalov doi:10.1038/nphoton.2014.144 A two-level system in an optical cavity pumped by an external laser can be coaxed to emit light bursts of exactly N photons at a time. See also: Article by Munoz et al. High-harmonic generation: Taking control of polarization   pp501 - 503 Misha Ivanov and Emilio Pisanty doi:10.1038/nphoton.2014.141 The ability to control the polarization of short-wavelength radiation generated by high-harmonic generation is useful not only for applications but also for testing conservation laws in physics. See also: Article by Fleischer et al. View from... MRS Spring: Materials pushing solar   pp503 - 505 David Pile doi:10.1038/nphoton.2014.147 Rapid developments in perovskite solar cells, photocatalysis and transparent conductors were showcased at the 2014 MRS Spring Meeting. Micro-optics: Beetle-like microlens array   p505 Simon Pleasants doi:10.1038/nphoton.2014.148 Photonics JOBS of the week PhD Studentship in Nonlinear Photonics University of Sussex Postoc Position on Distributed Control for Extreme Adaptive Optics TU Delft PhD Studentship in Optics of Semiconductor Nanostructures The University of Sheffield Postdoctoral Fellow in Optics UiT The Arctic University of Norway Postdoctoral Fellow University of Missouri More Science jobs from Photonics EVENT More science events from Review Top The emergence of perovskite solar cells   pp506 - 514 Martin A. Green, Anita Ho-Baillie and Henry J. Snaith doi:10.1038/nphoton.2014.134 Within the space of a few years, hybrid organic–inorganic perovskite solar cells have emerged as one of the most exciting material platforms in the photovoltaic sector. This review describes the rapid progress that has been made in this area. Letters Top Quantum mutual information of an entangled state propagating through a fast-light medium   pp515 - 519 Jeremy B. Clark, Ryan T. Glasser, Quentin Glorieux, Ulrich Vogl, Tian Li et al. doi:10.1038/nphoton.2014.112 The long-standing question of information velocity in slow- and fast-light media is investigated by measuring the propagation time of random and correlated noise. The mutual information shared between two modes of an entangled state of light was found to advance when one mode propagates through the fast-light medium. Broadband high-resolution X-ray frequency combs   pp520 - 523 Stefano M. Cavaletto, Zoltan Harman, Christian Ott, Christian Buth, Thomas Pfeifer et al. doi:10.1038/nphoton.2014.113 An optical-frequency-comb laser manipulating a dipole response can imprint the comb on an excited transition with a high photon energy. The concept can be implemented using existing X-ray technology. Parity-time symmetry and variable optical isolation in active-passive-coupled microresonators   pp524 - 529 Long Chang, Xiaoshun Jiang, Shiyue Hua, Chao Yang, Jianming Wen et al. doi:10.1038/nphoton.2014.133 On-chip parity-time-symmetric optics is experimentally demonstrated at a wavelength of 1,550 nm in two directly coupled, high-Q silica microtoroid resonators with balanced effective gain and loss. Switchable optical isolation with a nonreciprocal isolation ratio between -8 dB and +8 dB is also shown. The findings will be useful for potential applications in optical isolators, on-chip light control and optical communications. Articles Top Extreme ultraviolet radiation with coherence time greater than 1 s   pp530 - 536 Craig Benko, Thomas K. Allison, Arman Cingöz, Linqiang Hua, François Labaye et al. doi:10.1038/nphoton.2014.132 Extreme-ultraviolet frequency combs have previously been used to realize spectroscopy with a megahertz level resolution, but higher resolutions are desired for precision-measurement applications. Now, a sub-hertz spectral resolution is demonstrated, which corresponds to coherence times of over 1 s at photon energies up to 20 eV; such coherence times are over six orders of magnitude longer than those previously reported. See also: Interview with Jun Ye Efficient real-time detection of terahertz pulse radiation based on photoacoustic conversion by carbon nanotube nanocomposite   pp537 - 542 Sung-Liang Chen, You-Chia Chang, Cheng Zhang, Jong G. Ok, Tao Ling et al. doi:10.1038/nphoton.2014.96 By integrating a photoacoustic transmitter based on a carbon nanotube nanocomposite and an optical microring resonator as an ultrasonic sensor, a low-noise terahertz pulse detection system is demonstrated at room temperature. The response time and the noise-equivalent detectability energy are on the order of 0.1 µs and 220 pJ, respectively. Spin angular momentum and tunable polarization in high-harmonic generation   pp543 - 549 Avner Fleischer, Ofer Kfir, Tzvi Diskin, Pavel Sidorenko and Oren Cohen doi:10.1038/nphoton.2014.108 A simple method is demonstrated for high-order harmonic generation with fully controlled (linear, elliptical and circular) polarization. Its conversion efficiency is comparable to those of conventional high-order harmonic methods. This technique potentially has a broad range of applications from ultrafast circular dichroism to attosecond quantum optics. See also: News and Views by Ivanov & Pisanty Emitters of N-photon bundles   pp550 - 555 C. Sánchez Muñoz, E. del Valle, A. González Tudela, K. Müller, S. Lichtmannecker et al. doi:10.1038/nphoton.2014.114 A cavity quantum electrodynamics system comprising a quantum emitter and an optical cavity is theoretically investigated. The outcoupling process for the N-photon state of the cavity is simulated. The numerical calculations predict the possibility of operating this system as a source of N-photon bundles with a tunable integer N. See also: News and Views by Strekalov Fundamental limits and near-optimal design of graphene modulators and non-reciprocal devices   pp556 - 563 Michele Tamagnone, Arya Fallahi, Juan R. Mosig and Julien Perruisseau-Carrier doi:10.1038/nphoton.2014.109 Recent demonstrations of modulators, polarization rotators and isolators have indicated the potential of graphene for photonic applications. The present study investigates the fundamental limits and near-optimal design of graphene modulators and non-reciprocal devices. Generation of hybrid entanglement of light   pp564 - 569 Hyunseok Jeong, Alessandro Zavatta, Minsu Kang, Seung-Woo Lee, Luca S. Costanzo et al. doi:10.1038/nphoton.2014.136 Hybrid entanglement between a quantum single-photon qubit state and a classical one is experimentally generated by quantum-mechanically superposing non-Gaussian operations on distinct modes. Entanglement is clearly observed between the two different types of generated states. This method provides a feasible way to generate even larger hybrid entanglement. Remote creation of hybrid entanglement between particle-like and wave-like optical qubits   pp570 - 574 Olivier Morin, Kun Huang, Jianli Liu, Hanna Le Jeannic, Claude Fabre et al. doi:10.1038/nphoton.2014.137 Optical entanglement between a particle-like subsystem and a wave-like one is generated through the heralding detection of a single photon in an indistinguishable fashion at a central station. This enables information to be converted from one Hilbert space to the other via teleportation, and hence permits remote quantum processors based on different encodings to be connected. Interview Top Scaling combs into the XUV   p576 Interview with Jun Ye doi:10.1038/nphoton.2014.140 Scientists have transferred coherence from a near-infrared frequency comb laser to the extreme-ultraviolet region with no detectable noise. Jun Ye and co-workers explain that this might impact fields from fundamental physics to nuclear clocks. Top Advertisement NEW DEALS: Lab equipment and services Browse our library of savings and information! Check Marketplace first  VISIT MARKETPLACE TODAY      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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