Electronics, photonics and device physics articles within Nature Communications

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  • Article
    | Open Access

    Quantum bath engineering in the context of circuit quantum electrodynamics typically relies on single-photon losses. Aiello et al. demonstrate an approach for engineering higher-order photon losses in a microwave resonator coupled to a tunnel junction, which may be utilized in quantum information applications.

    • Gianluca Aiello
    • , Mathieu Féchant
    •  & Jérôme Estève

  • Article
    | Open Access

    Designing efficient reconfigurable field effect transistors remains a challenge. Here, the authors develop a transistor with three distinct operation modes, realized directly on an industrial 22nm FDSOI platform, demonstrating a reconfigurable analog circuit element with signal follower, phase shifter, and frequency doubler operation.

    • Maik Simon
    • , Halid Mulaosmanovic
    •  & Jens Trommer

  • Article
    | Open Access

    Hybrid quantum technologies synergistically combine different types of systems with complementary strengths. Here, the authors show monolithic integration and control of quantum dots and the emitted single photons in a surface acoustic wave-driven GaAs integrated quantum photonic circuit.

    • Dominik D. Bühler
    • , Matthias Weiß
    •  & Hubert J. Krenner

  • Article
    | Open Access

    Here, the authors observe tightly bound, valley-polarized, UV-emissive trions in monolayer transition metal dichalcogenide transistors. These are quasiparticles composed of an electron from a high-lying conduction band with negative effective mass, a hole from the first valence band, and an additional charge from a band-edge state.

    • Kai-Qiang Lin
    • , Jonas D. Ziegler
    •  & John M. Lupton

  • Article
    | Open Access

    While transmon is the most widely used superconducting qubit, the search for alternative qubit designs with improved characteristic is ongoing. Hyyppä et al. demonstrate a novel superconducting qubit, the unimon, that combines high anharmonicity and protection against low-frequency charge noise and flux noise.

    • Eric Hyyppä
    • , Suman Kundu
    •  & Mikko Möttönen

  • Article
    | Open Access

    Achieving optical cryptography scheme with both high capacity and security is highly desirable. Here, authors report a Stokes meta-hologram with a hierarchical encryption strategy that allows vector encryptions to produce depth-masked ciphertexts.

    • Xuyue Guo
    • , Peng Li
    •  & Jianlin Zhao

  • Article
    | Open Access

    Nanophotonic light sources with programmable emission spectrum are important building blocks for integrated photonics, sensing and optical computing. Here the authors tune the complex laser spectrum of a network laser achieving selective lasing of a single, two or more modes.

    • Dhruv Saxena
    • , Alexis Arnaudon
    •  & Riccardo Sapienza

  • Article
    | Open Access

    The conventional von Neumann computing architecture is ill suited to data intensive tasks as data must be repeated moved between the separated processing and memory units. Here, Seo et al propose a CMOS compatible, highly linear gate injection field-effect transistor where data can be both stored and processed.

    • Seokho Seo
    • , Beomjin Kim
    •  & Shinhyun Choi

  • Article
    | Open Access

    Controlling emission and propagation of acoustic waves offers new design opportunities for acoustic devices. Here the authors demonstrate such controls thanks to the emergence of a synthetic pseudo-spin in two-dimensional acoustic metamaterial.

    • Matthew Weiner
    • , Xiang Ni
    •  & Alexander B. Khanikaev

  • Article
    | Open Access

    Determining the triboelectric charge and energy density of dielectric materials is generally limited by many factors, failing to reflect their intrinsic behaviour. Here, a standardized strategy is proposed employing contact-separation TENG and supressing air-breakdown to assess max triboelectric charge and energy densities leading to an updated triboelectric series.

    • Di Liu
    • , Linglin Zhou
    •  & Zhong Lin Wang

  • Article
    | Open Access

    The use of light in driving the magnetization of materials has great technological potential, as well as allowing for insights into the fast dynamics of magnetic systems. Here, the authors combine CrI3, a van der Waals magnet, with WSe2, and demonstrate all optical switching of the resulting heterostructure.

    • Maciej Da̧browski
    • , Shi Guo
    •  & Robert J. Hicken

  • Article
    | Open Access

    Excitations of the fractional quantum Hall states are of great interest because they obey anyonic statistics, but electronic interferometers give contrasting results about their quantum coherence. Here the authors use novel two-particle time-domain interferometry to show that quantum coherence is indeed preserved.

    • I. Taktak
    • , M. Kapfer
    •  & D. C. Glattli

  • Article
    | Open Access

    Transition metal dichalcogenides (TMDCs) are interesting for nanophotonic applications due to their high refractive index and excitonic properties. Here, the authors report a scalable bottom-up fabrication method to realize arrays of TMDC metastructures showing dielectric optical modes and self-coupled exciton-polaritons.

    • Fuhuan Shen
    • , Zhenghe Zhang
    •  & Zefeng Chen

  • Article
    | Open Access

    2D transition metal ditellurides exhibit nontrivial topological phases, but the controlled bottom-up synthesis of these materials is still challenging. Here, the authors report the layer-by-layer growth of large-area bilayer and trilayer 1T’ MoTe2 films, showing thickness-dependent ferroelectricity and nonlinear Hall effect.

    • Teng Ma
    • , Hao Chen
    •  & Kian Ping Loh

  • Article
    | Open Access

    Spin qubits are a platform for quantum computing. There are many advantages for quantum information processing if the spin qubit can move. Here, Helgers et al. use a surface acoustic wave to define a moving quantum dot and demonstrate the magneticfield-free control of the spin precession, bringing “flying” spin qubits a step closer.

    • Paul L. J. Helgers
    • , James A. H. Stotz
    •  & Paulo V. Santos

  • Article
    | Open Access

    Spaces with negative curvature are difficult to realise and investigate experimentally, but they can be emulated with synthetic matter. Here, the authors show how to do this using an electric circuit network, and present a method to characterize and verify the hyperbolic nature of the implemented model.

    • Patrick M. Lenggenhager
    • , Alexander Stegmaier
    •  & Tomáš Bzdušek

  • Article
    | Open Access

    Spintronic terahertz (THz) emitters are a class of magnetic heterostructure where femtosecond laser excitations generate THz radiation emission. While they have great potential, electric field control of spintronic emitter remains a challenge. Here, by combining a spintronic emitter with a piezoelectric substrate, Agarwal et al. demonstrate electric field control of THz emission through induced piezostrain.

    • Piyush Agarwal
    • , Lisen Huang
    •  & Ranjan Singh

  • Article
    | Open Access

    Light emission from 17 types of LEDs is observed at record-low voltages of 36–60% of the bandgaps, which cannot be explained by earlier theories. The electroluminescence-voltage curves reveal a unified mechanism for ultralow-voltage LED operation.

    • Yaxiao Lian
    • , Dongchen Lan
    •  & Dawei Di

  • Article
    | Open Access

    Long operational stability is essential to commercialisation of organic solar cells. Here, the authors investigate the thermal degradation of inverted photovoltaic devices based on PM6:Y6 non-fullerene system to reveal that trap-induced transport resistance is primarily responsible for the drop in fill factor.

    • Christopher Wöpke
    • , Clemens Göhler
    •  & Carsten Deibel

  • Article
    | Open Access

    Understanding the charge trapping mechanism in organic semiconductors is crucial to design molecules for high-performance organic photodetectors. Labanti et al. systematically investigate the impact of donor molecular structure on the energetic disorder that affects both shallow and deep trap formation.

    • Chiara Labanti
    • , Jiaying Wu
    •  & Ji-Seon Kim

  • Article
    | Open Access

    Harmonic measurements have been used extensively in ferromagnetic/heavy metal heterostructures to characterize the magnetization dynamic; however, it has remained unclear about whether such techniques could be applied to antiferromagnetic devices. Here, Cheng et al demonstrate such a harmonic measurement approach in an antiferromagnet.

    • Yang Cheng
    • , Egecan Cogulu
    •  & Fengyuan Yang

  • Article
    | Open Access

    One challenge for spin-based electronics is the controlled and reliable switching of magnetization without magnetic fields. Here, Liu et al investigate a variety of compositions of CoPt, and determine the specific composition to maximize switching performance, potentially simplifying device design.

    • Liang Liu
    • , Chenghang Zhou
    •  & Jingsheng Chen

  • Article
    | Open Access

    To realize the full promise of topological mechanical vibrations, they have to be controlled successfully at the nanoscale. Here the authors report topological phonon transport in an optomechanical array. This unlocks the full toolbox of cavity optomechanics, coupling light to motion, for the area of topological phononics.

    • Hengjiang Ren
    • , Tirth Shah
    •  & Oskar Painter

  • Article
    | Open Access

    Andersen et al. have demonstrated a new type of beam steering device based on the excitonic response of an atomically thin semiconductor. Using electrostatic gates, the authors achieved tunable steering with switching times on the nanosecond scale.

    • Trond I. Andersen
    • , Ryan J. Gelly
    •  & Mikhail D. Lukin

  • Article
    | Open Access

    The exploration of topological boundary effects is one of the important aspects that could foster the development of future topological photonics devices. Here the authors propose a straightforward method to construct sharp boundaries in synthetic dimensions using a modulated ring resonator strongly coupled to an auxiliary ring.

    • Avik Dutt
    • , Luqi Yuan
    •  & Shanhui Fan

  • Article
    | Open Access

    Integrated polarization-sensitive photodetectors are important for sensing applications and optical communication. Here, the authors report the realization of 2D black phosphorus homojunction photodetectors defined by ferroelectric substrates, showing polarization ratios up to 288 and high responsivity in the near-infrared.

    • Shuaiqin Wu
    • , Yan Chen
    •  & Jianlu Wang

  • Article
    | Open Access

    Unsuspended optomechanical systems might enable unique applications for quantum sensing and transduction. Here, the authors demonstrate a two-dimensional slab-on-substrate optomechanical crystal empowered by mechanical bound states in the continuum.

    • Shengyan Liu
    • , Hao Tong
    •  & Kejie Fang

  • Article
    | Open Access

    Skyrmions, topological spin textures, can be pinned by defects present in the material that hosts them, influencing their motion. Here, Gruber et al show that the skyrmions are pinned at their boundary where the finite size of the skyrmions governs their pinning, and they demonstrate that certain pinning sites can switched on and off in-situ.

    • Raphael Gruber
    • , Jakub Zázvorka
    •  & Mathias Kläui

  • Article
    | Open Access

    Low dissipation of fundamental mode is a determinant factor in nanomechanical resonator design. Here the authors realize soft clamping for the fundamental mode in a nanomechanical tensile structure achieving low loss, low mass, and low resonance frequency that render it a perfect force sensor.

    • M. J. Bereyhi
    • , A. Beccari
    •  & N. J. Engelsen

  • Article
    | Open Access

    Here, the authors show brightening of dark excitons by strong coupling between cavity photons and high energy, spin-allowed, bright excitons in monolayer WSe2. In this regime, the commonly observed photoluminescence quenching stemming from the fast relaxation to the dark ground state is prevented.

    • Hangyong Shan
    • , Ivan Iorsh
    •  & Christian Schneider

  • Article
    | Open Access

    Neural sampling machines make use of noise to perform learning. Here, Dutta et al. present a hybrid stochastic synapse composed out of a ferroelectric transistor combined with a stochastic selector exhibiting multiplicative synaptic noise required for implementing a neural sample machine.

    • Sourav Dutta
    • , Georgios Detorakis
    •  & Suman Datta

  • Article
    | Open Access

    Superconducting quantum processors need to balance intentional disorder (to protect qubits) and nonlinear resonator coupling (to manipulate qubits), while avoiding chaotic instabilities. Berke et al. use the techniques of many-body localization theory to study the stability of current platforms against quantum chaos.

    • Christoph Berke
    • , Evangelos Varvelis
    •  & David P. DiVincenzo

  • Article
    | Open Access

    Self-organizing maps are data mining tools for unsupervised learning algorithms dealing with big data problems. The authors experimentally demonstrate a memristor-based self-organizing map that is more efficient in computing speed and energy consumption for data clustering, image processing and solving optimization problems.

    • Rui Wang
    • , Tuo Shi
    •  & Ming Liu

  • Article
    | Open Access

    Though active metasurfaces have been attractive for applications requiring control of optical wavefronts, realizing metasurfaces with full phase control remains a challenge. Here, the authors report a metasurface design strategy for enhanced dynamic phase modulation and tunability.

    • Ju Young Kim
    • , Juho Park
    •  & Min Seok Jang

  • Article
    | Open Access

    A route to scalability for superconducting quantum computation is the modular approach, which however requires coherent microwave-to-optical conversion. Here the authors use gallium phosphide optomechanical crystal cavities for this task, exploiting their high refractive index and large OM coupling rate.

    • Simon Hönl
    • , Youri Popoff
    •  & Paul Seidler

  • Article
    | Open Access

    While great progress has been made in the applications of machine learning models, training them on conventional computing hardware is an energy intensive process. Here, Mehta et al present an adaptive synaptic array offering considerable improvements in the energy efficiency of training.

    • Darshit Mehta
    • , Mustafizur Rahman
    •  & Shantanu Chakrabartty

  • Article
    | Open Access

    Electrical manipulation of antiferromagnetic order is crucial for future memory devices, but existing switching schemes require a large current density. Here, the authors achieve record low current density switching in FeRh by taking advantage of its antiferromagnetic to ferromagnetic phase transition.

    • Hao Wu
    • , Hantao Zhang
    •  & Kang L. Wang

  • Article
    | Open Access

    ’Systems with long coherence times are extremely important for the processing of quantum information. To this end the authors present a system able to cool down a resonator to its quantum mechanical ground state harnessing the large coupling between an ultra-coherent mechanical resonator and a superconducting circuit.’

    • Yannick Seis
    • , Thibault Capelle
    •  & Albert Schliesser

  • Article
    | Open Access

    2D materials represent a promising platform for machine vision and edge computing applications, although usually limited to ultraviolet and visible wavelengths. Here, the authors report the realization of a programmable image sensor based on black phosphorus, implementing multispectral imaging and analog in-memory computing functionalities in the near- to mid-infrared range.

    • Seokhyeong Lee
    • , Ruoming Peng
    •  & Mo Li

  • Article
    | Open Access

    Lip-language decoding systems are a promising technology to help people lacking a voice live a convenient life with barrier-free communication. Here, authors propose a concept of such system integrating self-powered triboelectric sensors and a well-trained dilated RNN model based on prototype learning.

    • Yijia Lu
    • , Han Tian
    •  & Zhong Lin Wang

  • Article
    | Open Access

    Constructing ultraviolet lasing is of great significance for basic research and medical use. Here the authors present a strategy for generating ultraviolet lasing through a tandem upconversion process with ultralarge anti-Stokes shift (1260 nm).

    • Tianying Sun
    • , Bing Chen
    •  & Feng Wang

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