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Incoherent broadband mid-infrared detection with lanthanide nanotransducers Nat. Photon. (IF 39.728) Pub Date : 2022-08-01 Liangliang Liang, Chongwu Wang, Jiaye Chen, Qi Jie Wang, Xiaogang Liu
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Ultrafast experts win Wolf Prize Nat. Photon. (IF 39.728) Pub Date : 2022-07-29
Three pioneers of attosecond physics share the 2022 Wolf Prize in Physics.
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New frontiers for integrated photonics Nat. Photon. (IF 39.728) Pub Date : 2022-07-29 Giampaolo Pitruzzello
Although optical communications continue to be the main driver for integrated photonics, new applications are emerging in computing and neural networks. That was the message from this year’s European Conference on Integrated Optics in Milan.
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Asymmetric control of light at the nanoscale Nat. Photon. (IF 39.728) Pub Date : 2022-07-29 Christos Argyropoulos
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Micropillars for single-photon phase shifts Nat. Photon. (IF 39.728) Pub Date : 2022-07-29 Stephan Dürr
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A bright future for attosecond physics Nat. Photon. (IF 39.728) Pub Date : 2022-07-29 Giampaolo Pitruzzello
The 2022 Wolf Prize in Physics has been awarded to Paul Corkum, Anne L’Huillier and Ferenc Krausz for their pioneering contributions to ultrafast laser science. Nature Photonics spoke to them about the milestones, challenges and future opportunities for the field.
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Femtojoule femtosecond all-optical switching in lithium niobate nanophotonics Nat. Photon. (IF 39.728) Pub Date : 2022-07-28 Qiushi Guo, Ryoto Sekine, Luis Ledezma, Rajveer Nehra, Devin J. Dean, Arkadev Roy, Robert M. Gray, Saman Jahani, Alireza Marandi
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Optically addressable universal holonomic quantum gates on diamond spins Nat. Photon. (IF 39.728) Pub Date : 2022-07-28 Yuhei Sekiguchi, Kazuki Matsushita, Yoshiki Kawasaki, Hideo Kosaka
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A photonic quantum engine driven by superradiance Nat. Photon. (IF 39.728) Pub Date : 2022-07-21 Jinuk Kim, Seung-hoon Oh, Daeho Yang, Junki Kim, Moonjoo Lee, Kyungwon An
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Defect engineering in wide-bandgap perovskites for efficient perovskite–silicon tandem solar cells Nat. Photon. (IF 39.728) Pub Date : 2022-07-18 Guang Yang, Zhenyi Ni, Zhengshan J. Yu, Bryon W. Larson, Zhenhua Yu, Bo Chen, Abdulwahab Alasfour, Xun Xiao, Joseph M. Luther, Zachary C. Holman, Jinsong Huang
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Synergistic strain engineering of perovskite single crystals for highly stable and sensitive X-ray detectors with low-bias imaging and monitoring Nat. Photon. (IF 39.728) Pub Date : 2022-07-18 Jizhong Jiang, Min Xiong, Ke Fan, Chunxiong Bao, Deyu Xin, Zhengwei Pan, Linfeng Fei, Haitao Huang, Lang Zhou, Kai Yao, Xiaojia Zheng, Liang Shen, Feng Gao
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Giant nonlinearity in upconversion nanoparticles Nat. Photon. (IF 39.728) Pub Date : 2022-07-14 Chaohao Chen, Dayong Jin
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Observation of the all-optical Stern–Gerlach effect in nonlinear optics Nat. Photon. (IF 39.728) Pub Date : 2022-07-14 Ofir Yesharim, Aviv Karnieli, Steven Jackel, Giuseppe Di Domenico, Sivan Trajtenberg-Mills, Ady Arie
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Self-calibrating programmable photonic integrated circuits Nat. Photon. (IF 39.728) Pub Date : 2022-07-07 Xingyuan Xu, Guanghui Ren, Tim Feleppa, Xumeng Liu, Andreas Boes, Arnan Mitchell, Arthur J. Lowery
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Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light–matter coupling Nat. Photon. (IF 39.728) Pub Date : 2022-07-07 T. P. Lyons, D. J. Gillard, C. Leblanc, J. Puebla, D. D. Solnyshkov, L. Klompmaker, I. A. Akimov, C. Louca, P. Muduli, A. Genco, M. Bayer, Y. Otani, G. Malpuech, A. I. Tartakovskii
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Mirror symmetric on-chip frequency circulation of light Nat. Photon. (IF 39.728) Pub Date : 2022-07-07 Jason F. Herrmann, Vahid Ansari, Jiahui Wang, Jeremy D. Witmer, Shanhui Fan, Amir H. Safavi-Naeini
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Hard X-ray helical dichroism of disordered molecular media Nat. Photon. (IF 39.728) Pub Date : 2022-07-04 Jérémy R. Rouxel, Benedikt Rösner, Dmitry Karpov, Camila Bacellar, Giulia F. Mancini, Francesco Zinna, Dominik Kinschel, Oliviero Cannelli, Malte Oppermann, Cris Svetina, Ana Diaz, Jérôme Lacour, Christian David, Majed Chergui
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Goodbye Letters Nat. Photon. (IF 39.728) Pub Date : 2022-07-01
In order to simplify and streamline our processes, Nature Photonics is moving to a single format for its primary research submissions
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Broadband mid-infrared waveform generation Nat. Photon. (IF 39.728) Pub Date : 2022-07-01 Jeffrey Moses, Shu-Wei Huang
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Smoke rings of light Nat. Photon. (IF 39.728) Pub Date : 2022-07-01 Filippo Cardano, Lorenzo Marrucci
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A new change of phase Nat. Photon. (IF 39.728) Pub Date : 2022-07-01 José Capmany, Daniel Pérez-López
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Observation of toroidal pulses of light Nat. Photon. (IF 39.728) Pub Date : 2022-07-01 Apostolos Zdagkas, Cormac McDonnell, Junhong Deng, Yijie Shen, Guixin Li, Tal Ellenbogen, Nikitas Papasimakis, Nikolay I. Zheludev
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Giant second-harmonic generation in ferroelectric NbOI2 Nat. Photon. (IF 39.728) Pub Date : 2022-06-30 Ibrahim Abdelwahab, Benjamin Tilmann, Yaze Wu, David Giovanni, Ivan Verzhbitskiy, Menglong Zhu, Rodrigo Berté, Fengyuan Xuan, Leonardo de S. Menezes, Goki Eda, Tze Chien Sum, Su Ying Quek, Stefan A. Maier, Kian Ping Loh
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Revealing the invariance of vectorial structured light in complex media Nat. Photon. (IF 39.728) Pub Date : 2022-06-23 Isaac Nape, Keshaan Singh, Asher Klug, Wagner Buono, Carmelo Rosales-Guzman, Amy McWilliam, Sonja Franke-Arnold, Ané Kritzinger, Patricia Forbes, Angela Dudley, Andrew Forbes
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Asymmetric parametric generation of images with nonlinear dielectric metasurfaces Nat. Photon. (IF 39.728) Pub Date : 2022-06-20 Sergey S. Kruk, Lei Wang, Basudeb Sain, Zhaogang Dong, Joel Yang, Thomas Zentgraf, Yuri Kivshar
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Few-photon all-optical phase rotation in a quantum-well micropillar cavity Nat. Photon. (IF 39.728) Pub Date : 2022-06-16 Tintu Kuriakose, Paul M. Walker, Toby Dowling, Oleksandr Kyriienko, Ivan A. Shelykh, Phillipe St-Jean, Nicola Carlon Zambon, Aristide Lemaître, Isabelle Sagnes, Luc Legratiet, Abdelmounaim Harouri, Sylvain Ravets, Maurice S. Skolnick, Alberto Amo, Jacqueline Bloch, Dmitry N. Krizhanovskii
Photonic platforms are an excellent setting for quantum technologies as weak photon–environment coupling ensures long coherence times. The second key ingredient for quantum photonics is interactions between photons, which can be provided by optical nonlinearities in the form of cross-phase modulation. This approach underpins many proposed applications in quantum optics1,2,3,4,5,6,7 and information
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Sub-megahertz spectral dip in a resonator-free twisted gain medium Nat. Photon. (IF 39.728) Pub Date : 2022-06-09 Neel Choksi, Yi Liu, Rojina Ghasemi, Li Qian
Ultra-narrow optical spectral features resulting from highly dispersive light–matter interactions are essential for a broad range of applications such as spectroscopy, slow-light and high-precision sensing. Features approaching sub-megahertz or, equivalently, Q-factors up to one billion and beyond, are challenging to obtain in solid-state systems, ultimately limited by loss. We present a novel approach
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Intense light drives band closure Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Dieter Bauer
High-harmonics spectroscopy reveals the closure of the bandgap between adjacent conduction bands in solids driven by high-intensity laser fields, providing insight into light-driven modifications of band structures
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Semiconductor yields sensitive thermometry Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Chaman Gupta, Peter J. Pauzauskie
The strongly temperature-dependent band-edge absorption from gallium arsenide enables an optical thermometer with nanokelvin temperature resolution and microscale spatial resolution.
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Toroidal vortices of light Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Chenhao Wan, Qian Cao, Jian Chen, Andy Chong, Qiwen Zhan
Toroidal vortices, also known as vortex rings, are whirling, closed-loop disturbances that form a characteristic ring shape in liquids and gases and propagate in a direction that is perpendicular to the plane of the ring. They are well-studied structures and commonly found in various fluid and gas flow scenarios in nature, for example in the human heart, underwater air bubbles and volcanic eruptions1
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Nanokelvin-resolution thermometry with a photonic microscale sensor at room temperature Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Amin Reihani, Edgar Meyhofer, Pramod Reddy
Ultrahigh-resolution thermometry is critical for future advances in bio-calorimetry1,2, sensitive bolometry for sensing3 and imaging4, as well as for probing dissipation in a range of electronic5, optoelectronic6 and quantum devices7. In spite of recent advances in the field8,9,10,11, achieving high-resolution measurements from microscale devices at room temperature remains an outstanding challenge
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Room-temperature electrically switchable spin–valley coupling in a van der Waals ferroelectric halide perovskite with persistent spin helix Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Lifu Zhang, Jie Jiang, Christian Multunas, Chen Ming, Zhizhong Chen, Yang Hu, Zonghuan Lu, Saloni Pendse, Ru Jia, Mani Chandra, Yi-Yang Sun, Toh-Ming Lu, Yuan Ping, Ravishankar Sundararaman, Jian Shi
Spintronic devices, by harnessing the spin degree of freedom, are expected to outperform charge-based devices in terms of energy efficiency and speed of operation. The use of an electric field to control spin at room temperature has been pursued for decades. A major hurdle that has contributed to the slow progress in this regard is the dilemma between effective control and strong spin relaxation. For
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Observation of light-driven band structure via multiband high-harmonic spectroscopy Nat. Photon. (IF 39.728) Pub Date : 2022-06-02 Ayelet J. Uzan-Narovlansky, Álvaro Jiménez-Galán, Gal Orenstein, Rui E. F. Silva, Talya Arusi-Parpar, Sergei Shames, Barry D. Bruner, Binghai Yan, Olga Smirnova, Misha Ivanov, Nirit Dudovich
Intense light–matter interactions have revolutionized our ability to probe and manipulate quantum systems at sub-femtosecond timescales1, opening routes to the all-optical control of electronic currents in solids at petahertz rates2,3,4,5,6,7. Such control typically requires electric-field amplitudes in the range of almost volts per angstrom, when the voltage drop across a lattice site becomes comparable
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Super-Planckian emission cannot really be ‘thermal’ Nat. Photon. (IF 39.728) Pub Date : 2022-05-30 Yuzhe Xiao, Matthew Sheldon, Mikhail A. Kats
A heat-powered emitter can sometimes exceed the Planck thermal-emission limit. We clarify when such super-Planckian emission is possible, arguing that far-field super-Planckian emission requires a distribution of energy that is not consistent with a unique temperature, and therefore the process should not be called ‘thermal emission’.
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High-resolution non-line-of-sight imaging employing active focusing Nat. Photon. (IF 39.728) Pub Date : 2022-05-30 Ruizhi Cao, Frederic de Goumoens, Baptiste Blochet, Jian Xu, Changhuei Yang
Non-line-of-sight (NLOS) imaging is a rapidly developing research direction that has significant applications in autonomous vehicles, remote sensing and other areas. Existing NLOS methods primarily depend on time-gated measurements and sophisticated signal processing to extract information from scattered light. Here we introduce a method that directly manipulates light to counter the wall’s scattering
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Interaction and co-assembly of optical and topological solitons Nat. Photon. (IF 39.728) Pub Date : 2022-05-30 Guilhem Poy, Andrew J. Hess, Andrew J. Seracuse, Michael Paul, Slobodan Žumer, Ivan I. Smalyukh
Solitons attract a great deal of interest in many fields, ranging from optics to fluid mechanics, cosmology, particle physics and condensed matter. However, solitons of these very different types rarely coexist and interact with each other. Here we develop a system that hosts optical solitons coexisting with topological solitonic structures localized in the molecular alignment field of a soft birefringent
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Kilowatt-average-power single-mode laser light transmission over kilometre-scale hollow-core fibre Nat. Photon. (IF 39.728) Pub Date : 2022-05-30 H. C. H. Mulvad, S. Abokhamis Mousavi, V. Zuba, L. Xu, H. Sakr, T. D. Bradley, J. R. Hayes, G. T. Jasion, E. Numkam Fokoua, A. Taranta, S.-U. Alam, D. J. Richardson, F. Poletti
High-power laser delivery with near-diffraction-limited beam quality is typically limited to tens of metres distances by nonlinearity-induced spectral broadening inside the glass core of delivery fibres. Anti-resonant hollow-core fibres offer not only orders-of-magnitude lower nonlinearity but also loss and modal purity comparable to conventional beam-delivery fibres. Using a single-mode hollow-core
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A ferroelectric multilevel non-volatile photonic phase shifter Nat. Photon. (IF 39.728) Pub Date : 2022-05-30 Jacqueline Geler-Kremer, Felix Eltes, Pascal Stark, David Stark, Daniele Caimi, Heinz Siegwart, Bert Jan Offrein, Jean Fompeyrine, Stefan Abel
A novel class of programmable integrated photonic circuits has emerged over the past years, strongly driven by approaches to tackle unsolved computing problems in the optical domain. Photonic neuromorphic and quantum computing are examples of optical systems implemented in complex photonic circuits, which are reconfigured before and during operation. However, a key building block to enable efficient
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Spontaneous-polarization-induced photovoltaic effect in rhombohedrally stacked MoS2 Nat. Photon. (IF 39.728) Pub Date : 2022-05-26 Dongyang Yang, Jingda Wu, Benjamin T. Zhou, Jing Liang, Toshiya Ideue, Teri Siu, Kashif Masud Awan, Kenji Watanabe, Takashi Taniguchi, Yoshihiro Iwasa, Marcel Franz, Ziliang Ye
Stacking order in van der Waals materials determines the coupling between atomic layers and is therefore the key to materials’ properties. Recently, ferroelectricity, a phenomenon exhibiting reversible spontaneous electrical polarization, has been observed in zero-degree aligned van der Waals structures. In these artificial stacks, the single-domain size is limited by angle misalignment. Here we show
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Single-cycle infrared waveform control Nat. Photon. (IF 39.728) Pub Date : 2022-05-26 Philipp Steinleitner, Nathalie Nagl, Maciej Kowalczyk, Jinwei Zhang, Vladimir Pervak, Christina Hofer, Arkadiusz Hudzikowski, Jarosław Sotor, Alexander Weigel, Ferenc Krausz, Ka Fai Mak
Tailoring the electric-field waveform of ultrashort light pulses forms the basis for controlling nonlinear optical phenomena on their genuine, attosecond timescale. Here we extend waveform control from the visible and near-infrared—where it was previously demonstrated—to the mid-infrared spectral range. Our approach yields single-cycle infrared pulses over several octaves for the first time. Sub-10-fs
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Multiple exciton generation in tin–lead halide perovskite nanocrystals for photocurrent quantum efficiency enhancement Nat. Photon. (IF 39.728) Pub Date : 2022-05-26 Yifan Chen, Jun Yin, Qi Wei, Chenhao Wang, Xiaoting Wang, Hui Ren, Siu Fung Yu, Osman M. Bakr, Omar F. Mohammed, Mingjie Li
Multiple exciton generation (MEG), the generation of multiple electron–hole pairs from a single high-energy photon, can enhance the photoconversion efficiency in several technologies including photovoltaics, photon detection and solar-fuel production1,2,3,4,5,6. However, low efficiency, high photon-energy threshold and fast Auger recombination impede its practical application1,7. Here we achieve enhanced
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Solution-processed green and blue quantum-dot light-emitting diodes with eliminated charge leakage Nat. Photon. (IF 39.728) Pub Date : 2022-05-19 Yunzhou Deng, Feng Peng, Yao Lu, Xitong Zhu, Wangxiao Jin, Jing Qiu, Jiawei Dong, Yanlei Hao, Dawei Di, Yuan Gao, Tulai Sun, Ming Zhang, Feng Liu, Linjun Wang, Lei Ying, Fei Huang, Yizheng Jin
Quantum-dot light-emitting diodes (QD-LEDs) promise a new generation of efficient, low-cost, large-area and flexible electroluminescent devices. However, the inferior performance of green and blue QD-LEDs compared with their red counterpart is hindering the commercialization of QD-LEDs in display and solid-state lighting applications. Here we demonstrate green and blue QD-LEDs with ~100% conversion
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Shaping light for optogenetics Nat. Photon. (IF 39.728) Pub Date : 2022-05-16 Giampaolo Pitruzzello
Nature Photonics spoke to Hillel Adesnik from UC Berkeley about the benefits of using photonic techniques in optogenetics and the key challenges laying ahead.
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Efficient free electron laser Nat. Photon. (IF 39.728) Pub Date : 2022-05-12 Lixin Yan, Zhuoyuan Liu
A single-pass free electron laser operating at 0.16 THz with an energy efficiency of ~10% promises compact and high-power sources in the terahertz spectral region.
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Single-pass high-efficiency terahertz free-electron laser Nat. Photon. (IF 39.728) Pub Date : 2022-05-12 A. Fisher, Y. Park, M. Lenz, A. Ody, R. Agustsson, T. Hodgetts, A. Murokh, P. Musumeci
The terahertz gap is a region of the electromagnetic spectrum where high average and peak power radiation sources are scarce while at the same time scientific and industrial applications are growing in demand. Free-electron laser (FEL) coupling in a magnetic undulator is one of the best options for radiation generation in this frequency range, but slippage effects require the use of relatively long
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High harmonic generation in condensed matter Nat. Photon. (IF 39.728) Pub Date : 2022-05-09 Eleftherios Goulielmakis, Thomas Brabec
When solids are exposed to intense laser fields whose forces are comparable to the binding forces of valence electrons in crystals, nonlinear optics of solids advances to the nonperturbative or extreme nonlinear regime. A hallmark effect of extreme nonlinear optics is the emission of high-order harmonics of the laser from the bulk of materials. The discovery and detailed study of this phenomenon over
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Spectroscopy finds chiral phonons Nat. Photon. (IF 39.728) Pub Date : 2022-05-05 Minkyu Kim, Vladimir V. Tsukruk
The chiral nature of phonons in crystals of biomolecules is identified by terahertz spectroscopy, paving the way to a better understanding of biochemical processes.
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A crystal of light vortices Nat. Photon. (IF 39.728) Pub Date : 2022-05-05 Philippe St-Jean
Researchers report a solid-state laser containing metasurfaces that generates a 10 × 10 array of phase-locked optical vortices with tunable orbital angular momentum.
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A braid for light Nat. Photon. (IF 39.728) Pub Date : 2022-05-05 Stefan Scheel, Alexander Szameit
Non-Abelian braiding, an essential process for realizing topological quantum computation, is implemented using an array of photonic integrated waveguides.
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High-efficiency photoemission from magnetically doped quantum dots driven by multi-step spin-exchange Auger ionization Nat. Photon. (IF 39.728) Pub Date : 2022-05-02 Clément Livache, Whi Dong Kim, Ho Jin, Oleg V. Kozlov, Igor Fedin, Victor I. Klimov
Materials displaying electron photoemission under visible-light excitation are of great interest for applications in photochemistry, photocathodes, advanced electron beam sources and electron microscopy. We demonstrate that in manganese-doped CdSe colloidal quantum dots (CQDs), two-step Auger up-conversion enables highly efficient electron photoemission under excitation with visible-light pulses. This
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An atomic spin on amplification of light Nat. Photon. (IF 39.728) Pub Date : 2022-04-25 Kanu Sinha, Elizabeth A. Goldschmidt
Non-reciprocal physical systems exhibit direction-dependent propagation of light, enabling a myriad of devices such as diodes and circulators. A new experiment demonstrates non-reciprocal amplification of light via atomic spins, driving photons on a one-way street through optical nanofibres.
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Atomic spin-controlled non-reciprocal Raman amplification of fibre-guided light Nat. Photon. (IF 39.728) Pub Date : 2022-04-25 Sebastian Pucher, Christian Liedl, Shuwei Jin, Arno Rauschenbeutel, Philipp Schneeweiss
In a non-reciprocal optical amplifier, gain depends on whether the light propagates forwards or backwards through the device. Typically, one requires either the magneto-optical effect, temporal modulation or optical nonlinearity to break reciprocity. By contrast, here we demonstrate non-reciprocal amplification of fibre-guided light using Raman gain provided by spin-polarized atoms that are coupled
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Author Correction: Room-temperature superfluorescence in hybrid perovskites and its origins Nat. Photon. (IF 39.728) Pub Date : 2022-04-14 Melike Biliroglu,Gamze Findik,Juliana Mendes,Dovletgeldi Seyitliyev,Lei Lei,Qi Dong,Yash Mehta,Vasily V. Temnov,Franky So,Kenan Gundogdu
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Quantum microscopy based on Hong–Ou–Mandel interference Nat. Photon. (IF 39.728) Pub Date : 2022-04-11 Bienvenu Ndagano, Hugo Defienne, Dominic Branford, Yash D. Shah, Ashley Lyons, Niclas Westerberg, Erik M. Gauger, Daniele Faccio
Hong–Ou–Mandel (HOM) interference—the bunching of indistinguishable photons at a beamsplitter—is a staple of quantum optics and lies at the heart of many quantum sensing approaches and recent optical quantum computers. Here we report a full-field, scan-free quantum imaging technique that exploits HOM interference to reconstruct the surface depth profile of transparent samples. We demonstrate the ability
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Vortex laser arrays with topological charge control and self-healing of defects Nat. Photon. (IF 39.728) Pub Date : 2022-04-11 Marco Piccardo, Michael de Oliveira, Andrea Toma, Vincenzo Aglieri, Andrew Forbes, Antonio Ambrosio
Geometric arrays of vortices found in various systems owe their regular structure to mutual interactions within a confined system. In optics, such vortex crystals may form spontaneously within a resonator. Their crystallization is relevant in many areas of physics, although their usefulness is limited by the lack of control over their topology. On the other hand, programmable devices like spatial light
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Quantum-size-tuned heterostructures enable efficient and stable inverted perovskite solar cells Nat. Photon. (IF 39.728) Pub Date : 2022-04-07 Hao Chen, Sam Teale, Bin Chen, Yi Hou, Luke Grater, Tong Zhu, Koen Bertens, So Min Park, Harindi R. Atapattu, Yajun Gao, Mingyang Wei, Andrew K. Johnston, Qilin Zhou, Kaimin Xu, Danni Yu, Congcong Han, Teng Cui, Eui Hyuk Jung, Chun Zhou, Wenjia Zhou, Andrew H. Proppe, Sjoerd Hoogland, Frédéric Laquai, Tobin Filleter, Kenneth R. Graham, Zhijun Ning, Edward H. Sargent
The energy landscape of reduced-dimensional perovskites (RDPs) can be tailored by adjusting their layer width (n). Recently, two/three-dimensional (2D/3D) heterostructures containing n = 1 and 2 RDPs have produced perovskite solar cells (PSCs) with >25% power conversion efficiency (PCE). Unfortunately, this method does not translate to inverted PSCs due to electron blocking at the 2D/3D interface.
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Controlled transfer of transverse orbital angular momentum to optically trapped birefringent microparticles Nat. Photon. (IF 39.728) Pub Date : 2022-04-07 Alexander B. Stilgoe, Timo A. Nieminen, Halina Rubinsztein-Dunlop
The interaction between structured light beams possessing optical angular momentum and small particles promises new opportunities for optical manipulation, such as the generation of light-induced torque and rotation of objects. However, so far, studies have largely centred on nanoscale particles. Here we report the observation and measurement of the transfer of transverse angular momentum to birefringent
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Photon-number entanglement generated by sequential excitation of a two-level atom Nat. Photon. (IF 39.728) Pub Date : 2022-04-07 Stephen C. Wein, Juan C. Loredo, Maria Maffei, Paul Hilaire, Abdelmounaim Harouri, Niccolo Somaschi, Aristide Lemaître, Isabelle Sagnes, Loïc Lanco, Olivier Krebs, Alexia Auffèves, Christoph Simon, Pascale Senellart, Carlos Antón-Solanas
Entanglement and spontaneous emission are fundamental quantum phenomena that drive many applications of quantum physics. During the spontaneous emission of light from an excited two-level atom, the atom briefly becomes entangled with the photonic field. Here we show that this natural process can be used to produce photon-number entangled states of light distributed in time. By exciting a quantum dot—an
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Chiral quantum optics goes electric Nat. Photon. (IF 39.728) Pub Date : 2022-04-04 Arno Rauschenbeutel, Philipp Schneeweiss
The local polarization of light in nanophotonic waveguides changes with the light’s direction of propagation. By electrically controlling the polarization of optically created waveguide-coupled excitons in a two-dimensional semiconductor, researchers demonstrate voltage-controlled routing of photons in an integrated nanophotonic device.