Integrated optics articles within Nature Communications

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  • Article
    | Open Access

    Kerr frequency combs are a promising laser source for future optical networks. The authors demonstrate coherence-cloning between two remote Kerr combs and improve optical coherent communication in terms of performance, power consumption, and simplicity.

    • Yong Geng
    • , Heng Zhou
    •  & Kun Qiu

  • Article
    | Open Access

    The authors introduce an accurate, fast and efficient technique to analyze sensory data. They use a continuous wavelet transform concept to look for certain patterns in noisy raw data. The superiority of this approach is demonstrated with fluorescence signals from a chip-based, optofluidic single particle sensor.

    • Vahid Ganjalizadeh
    • , Gopikrishnan G. Meena
    •  & Holger Schmidt

  • Article
    | Open Access

    Though theory suggests that highly energy efficient optical neural networks (ONNs) based on optical matrix-vector multipliers are possible, an experimental validation is lacking. Here, the authors report an ONN with >90% accuracy image classification using <1 detected photon per scalar multiplication.

    • Tianyu Wang
    • , Shi-Yuan Ma
    •  & Peter L. McMahon

  • Article
    | Open Access

    The combination of superconducting nanowire single photon detectors and electro-optically reconfigurable circuits in a cryogenic environment is notoriously difficult to reach. Here, the authors realise this on a Lithium-Niobate-On-Insulator platform, reaching high speed modulation at a frequency up to 1 GHz.

    • Emma Lomonte
    • , Martin A. Wolff
    •  & Francesco Lenzini

  • Article
    | Open Access

    Weak value amplification in a compact format can lead to improved measurement capabilities in practical applications. Here the authors demonstrate weak value amplification in an integrated photonic chip with a multimode interferometer.

    • Meiting Song
    • , John Steinmetz
    •  & Jaime Cardenas

  • Article
    | Open Access

    Nonreciprocal devices are crucial in scientific research and practical applications at all frequencies. Here the authors demonstrate an integrated terahertz optical isolator based on the magneto-optical effect in a nonreciprocal resonator.

    • Shixing Yuan
    • , Liao Chen
    •  & Xinliang Zhang

  • Article
    | Open Access

    Graphene-based photodetectors have many advantages for applications. Here, the authors demonstrate a high-speed optical coherent receiver for optical communications based on graphene-on-plasmonic slot waveguide photodetectors.

    • Yilun Wang
    • , Xiang Li
    •  & Xinliang Zhang

  • Article
    | Open Access

    In this work the authors demonstrate on-chip integration of Brillouin lasing operating at visible wavelengths, with engineered design for stable output. This technical and scientific advance will help develop integrated light sources for quantum computing or atomic and molecular spectroscopy.

    • Nitesh Chauhan
    • , Andrei Isichenko
    •  & Daniel J. Blumenthal

  • Article
    | Open Access

    Semiconductor surface states often stand in the way of device performance, but here, the authors take advantage of them for wavelength conversion. They present a compact, passive conversion device insensitive to optical alignment by using plasmon-coupled surface states that enable the efficient conversion without nonlinear phenomena.

    • Deniz Turan
    • , Ping Keng Lu
    •  & Mona Jarrahi

  • Article
    | Open Access

    Reconfigurable wavelength-selective devices are essential components of flexible optical networks. Here the authors show a silicon-photonic add-drop multiplexer meeting the strict requirements of telecom systems in terms of broadband operation range, hitless tunability and polarization transparency.

    • Francesco Morichetti
    • , Maziyar Milanizadeh
    •  & Andrea Melloni

  • Article
    | Open Access

    Optical receivers based on graphene still suffer from low responsivity. Here, the authors integrate a photo-thermoelectric graphene photodetector with a Si micro-ring resonator, and obtain a voltage responsivity ~ 90 V/W and a reduction of energy-per-bit consumption, enabling performance on par with mature semiconductor technology.

    • S. Schuler
    • , J. E. Muench
    •  & T. Mueller

  • Article
    | Open Access

    Light field prints displaying 3D information often appear pixelated due to limited resolution and misalignment between lenses and colour pixels. Here, the authors present a one-step process via two-photon polymerization lithography to fabricate light field prints with high spatial and angular resolution.

    • John You En Chan
    • , Qifeng Ruan
    •  & Joel K. W. Yang

  • Article
    | Open Access

    Compact spectrometers that are simple and scalable in design can enable many applications. Here the authors demonstrate a silicon photonics based single-shot spectrometer that uses a group of waveguide frequency filters to construct the spectrum.

    • Ang Li
    •  & Yeshaiahu Fainman

  • Article
    | Open Access

    Photonic processors that can perform arbitrary tasks are in demand for many applications. Here, the authors present a photonic architecture using waveguide and resonator couplings to perform arbitrary linear transformations, by taking advantage of the frequency synthetic dimension.

    • Siddharth Buddhiraju
    • , Avik Dutt
    •  & Shanhui Fan

  • Article
    | Open Access

    For widespread technological application of nonlinear photonic integrated circuits, ultralow optical losses and high fabrication throughput are required. Here, the authors present a CMOS fabrication technique that realizes integrate photonic microresonators on waver-level with mean quality factors exceeding 30 million and 1 dB/m optical losses.

    • Junqiu Liu
    • , Guanhao Huang
    •  & Tobias J. Kippenberg

  • Article
    | Open Access

    Integrated photodetectors are essential for scalable photonic platforms, yet most efforts are concerted on the developing devices operating at infrared telecommunication wavelengths. Here, the authors report a monolithically integrated avalanche photodetector for visible light based on doped-Si rib waveguide with end-fire input coupling to a silicon nitride waveguide.

    • Salih Yanikgonul
    • , Victor Leong
    •  & Leonid Krivitsky

  • Article
    | Open Access

    Integrated photonics are promising to scale up quantum optics. Here the authors combine low-power microelectromechanical control and superconducting single-photon detectors on the same chip and demonstrate routing, high-dynamic-range detection, and power stabilization.

    • Samuel Gyger
    • , Julien Zichi
    •  & Carlos Errando-Herranz

  • Article
    | Open Access

    The fast carrier dynamics and ultra-broadband optical properties of graphene make it suitable for optical communications. Here, the authors demonstrate a photo-thermo-electric graphene photodetector integrated on a Si waveguide featuring 105 Gbit s−1 non-return to zero and 120 Gbit s−1 4-level pulse amplitude modulation direct detection.

    • S. Marconi
    • , M. A. Giambra
    •  & M. Romagnoli

  • Article
    | Open Access

    Most demonstrations of optical neural networks for computing have been so far limited to real-valued frameworks. Here, the authors implement complex-valued operations in an optical neural chip that integrates input preparation, weight multiplication and output generation within a single device.

    • H. Zhang
    • , M. Gu
    •  & A. Q. Liu

  • Article
    | Open Access

    Lithium niobate (LN) devices are promising for future photonic integrated circuits. Here, the authors demonstrate an electro-optic LN modulator with a very small modal volume based on photonic crystal resonator architecture.

    • Mingxiao Li
    • , Jingwei Ling
    •  & Qiang Lin

  • Article
    | Open Access

    The use of a photonic network of coupled degenerate optical parametric oscillators for solving complex optimisation problems would require scalable integration capabilities. Here, the authors exploit χ (3) nonlinearity in SiN to demonstrate on-chip phase-tunable coupling between two DOPO based Ising nodes.

    • Yoshitomo Okawachi
    • , Mengjie Yu
    •  & Alexander L. Gaeta

  • Article
    | Open Access

    In-phase/quadrature (IQ) electro-optic modulators are underpinning devices for coherent transmission technology. Here the authors present IQ modulators in the lithium-niobate-on-insulator platform, which provide improved overall performance and advanced modulation formats for future coherent transmission systems.

    • Mengyue Xu
    • , Mingbo He
    •  & Xinlun Cai

  • Article
    | Open Access

    Here, the authors demonstrate acousto-optic modulation of silicon nitride microring resonators using high-overtone bulk acoustic wave resonances, allowing modulation in the GHz range via acoustic waves. As an application, an optical isolator is demonstrated with 17 dB non-reciprocity.

    • Hao Tian
    • , Junqiu Liu
    •  & Sunil A. Bhave

  • Article
    | Open Access

    Integrated devices are useful for applications like sample stabilization, microscopy, adaptive optics, and acceleration sensors. Here the authors demonstrate a fully integrated chip-scale light-based displacement sensor using Huygens dipole scattering of light.

    • Ankan Bag
    • , Martin Neugebauer
    •  & Peter Banzer

  • Article
    | Open Access

    Suitability for large-scale quantum computation imposes severe requirements on single-photon sources in terms of purity, indistinguishability and heralding efficiency. Here, the authors boost all these figures of merit through a dual-mode pump-delayed four-wave mixing scheme in low-loss silicon waveguides.

    • S. Paesani
    • , M. Borghi
    •  & A. Laing

  • Article
    | Open Access

    On-chip mechanical sensing platforms require tuneable lasers with narrow linewidth and low spectral noise, making read-out challenging. Here, the authors report a nanomechanical sensor with 80nm bandwidth, displacement imprecision of 45 fm/Hz1/2 as well as a dynamic range greater than 30 nm with integrated photodetectors.

    • Tianran Liu
    • , Francesco Pagliano
    •  & Andrea Fiore

  • Article
    | Open Access

    Chip-scale modular components are important for nanophotonic applications. Here, the authors demonstrate post-processing of a silicon-on-insulator waveguide into an integrated hybrid plasmonic circuit, consisting of a plasmonic rotator and a nanofocusser module, which together result in nanoscale nonlinear wavelength conversion.

    • Alessandro Tuniz
    • , Oliver Bickerton
    •  & C. Martijn de Sterke

  • Article
    | Open Access

    Integrated photonics allows integration of complex optical circuits on a single chip. Here, the authors propose a wavelength division multiplexing based electronic-photonic arithmetic logic unit for computing at high speeds and with improved power consumption to help with the physical limits of Moore’s law.

    • Zhoufeng Ying
    • , Chenghao Feng
    •  & Ray T. Chen

  • Article
    | Open Access

    Supersymmetric quantum mechanics enables the description of phenomena exhibiting a supersymmetry only in the space domain. Here, the authors show an underlying time-domain supersymmetry exists in optics, acoustics, and elasticity, and study its properties and potential applicability.

    • Carlos García-Meca
    • , Andrés Macho Ortiz
    •  & Roberto Llorente Sáez

  • Article
    | Open Access

    Lithium niobate is essential for electro-optic modulation, however, combining it with the attractive features of plasmonics is largely unexplored. Here, the authors demonstrate ultra-compact electrooptic switching with low voltage-length product, fast nonlinear response and low capacitance.

    • Martin Thomaschewski
    • , Vladimir A. Zenin
    •  & Sergey I. Bozhevolnyi

  • Article
    | Open Access

    Most efficient terahertz detection schemes rely on complex free space optics and require high-power lasers. Here, the authors report an integrated plasmonic terahertz detector on a silicon photonics platform, with 2.5 THz bandwidth and a 65 dB dynamical range operating at an optical power of only 63 nW.

    • Yannick Salamin
    • , Ileana-Cristina Benea-Chelmus
    •  & Juerg Leuthold

  • Article
    | Open Access

    Here, the authors introduce optical phase change materials based on Ge-Sb-Se-Te which breaks the coupling between refractive index and optical loss allowing low-loss performance benefits. They demonstrate low losses in nonvolatile photonic circuits and electrical pixelated switching have been demonstrated.

    • Yifei Zhang
    • , Jeffrey B. Chou
    •  & Juejun Hu

  • Article
    | Open Access

    Integration of photonic circuits with single photon emitters provides a promising route towards scalable quantum photonic chips. Here, the authors integrate a WSe2 monolayer onto a SiN chip and demonstrate the coupling of single photon emitters in WSe2 with the guided mode of a SiN waveguide.

    • Frédéric Peyskens
    • , Chitraleema Chakraborty
    •  & Dirk Englund

  • Article
    | Open Access

    Single photon devices are needed for many future technologies, but resolving the color of single photons in a compact architecture is still a challenge. The authors present a broadband, chip-scale spectrometer for measuring single photon wavelengths from 600 to 2000 nm with no moving parts.

    • Risheng Cheng
    • , Chang-Ling Zou
    •  & Hong X. Tang

  • Article
    | Open Access

    Measurement-based quantum computing is one of the most promising approaches for photon-based universal quantum computation. Here, the authors realise a universal encoder of four-photon graph states on a silicon chip, and use Bayesian inference methods to characterise the error sources.

    • Jeremy C. Adcock
    • , Caterina Vigliar
    •  & Mark G. Thompson

  • Article
    | Open Access

    On-chip mode-division multiplexing has many challenges including crosstalk, losses, and footprint.  Here the authors use a nanohole metastructure to create multiplexed bends and crossings for photonic data communications circuit routing with high density that combats these challenges.

    • Yingjie Liu
    • , Ke Xu
    •  & Qinghai Song

  • Article
    | Open Access

    Temporal cloaks, which hide a temporal event within a signal, have been previously limited to very short and periodic event cloaking. Here the authors report a temporal cloak with a programmable-length cloaking window using a silicon microring and optical frequency comb.

    • Feng Zhou
    • , Siqi Yan
    •  & Xinliang Zhang

  • Article
    | Open Access

    Satellite communications shall only thrive if being able to compete with fibre in both bandwidth and cost. Here, the authors demonstrate that a coherent and yet modular photonic-aided payload is feasible, paving the way for a new generation of communications satellites with photonics at their core.

    • Vanessa C. Duarte
    • , João G. Prata
    •  & Miguel V. Drummond

  • Article
    | Open Access

    Here, the authors control concentration quenching in a stoichiometric Er3+ compound using a core−shell nanostructured host and an integrated optical waveguide circuit excitation platform. The efficient telecom to ultraviolet upconversion allows for exploration of photonic applications involving upconversion nanomaterials.

    • Tianying Sun
    • , Yuhua Li
    •  & Feng Wang

  • Article
    | Open Access

    Increasing bandwidth demands in optical communications requires components to be compact with energy-efficient operation. Here, the authors demonstrate plasmonic IQ modulators on a silicon photonics platform with phase shifters, operating with sub-1V electronics at 100 GBaud and low electrical energy consumption.

    • Wolfgang Heni
    • , Yuriy Fedoryshyn
    •  & Juerg Leuthold

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