Optics and photonics articles within Nature Communications

  • Article
    | Open Access

    Traditional learning procedures for artificial intelligence rely on digital methods not suitable for physical hardware. Here, Nakajima et al. demonstrate gradient-free physical deep learning by augmenting a biologically inspired algorithm, accelerating the computation speed on optoelectronic hardware.

    • Mitsumasa Nakajima
    • , Katsuma Inoue
    •  & Kohei Nakajima
  • Article
    | Open Access

    The authors investigate whether strong light-matter coupling can alter the nonlinear optical response of molecules inside a microcavity. Focusing on electroabsorption as a model third order nonlinearity, they find that apparent discrepancies between experiment and classical transfer matrix modeling arise from dark states in the system and are not a sign of new physics in the strong coupling regime.

    • Chiao-Yu Cheng
    • , Nina Krainova
    •  & Noel C. Giebink
  • Article
    | Open Access

    The authors present single-pixel imaging accelerated via swept aggregate patterns (SPI-ASAP), which combines a digital micromirror device with laser scanning for fast and reconfigurable pattern projection, and a lightweight reconstruction algorithm. They demonstrate real-time video streaming at 100 fps, and up to 12,000 fps offline.

    • Patrick Kilcullen
    • , Tsuneyuki Ozaki
    •  & Jinyang Liang
  • Article
    | Open Access

    The authors present a single-shot 3D imaging approach utilizing carefully designed point clouds projection based on a metasurface device. They show submillimeter depth accuracy and demonstrate the potential for hand gesture detection.

    • Xiaoli Jing
    • , Ruizhe Zhao
    •  & Lingling Huang
  • Article
    | Open Access

    The authors present an approach to phase imaging by using the non-local optical response of a guided-moderesonator metasurface. They demonstrate that this metasurface can be added to a conventional microscope to enable quantitative phase contrast imaging.

    • Anqi Ji
    • , Jung-Hwan Song
    •  & Mark L. Brongersma
  • Article
    | Open Access

    Structured Illumination Microscopy allows for the visualization of biological structures at resolutions below the diffraction limit, but this imaging modality is still hampered by high experimental complexity. Here, the authors present a combination of interferometry and machine learning to construct a structured illumination microscope for super resolution imaging of dynamic sub-cellular biological structures in multiple colors.

    • Edward N. Ward
    • , Lisa Hecker
    •  & Clemens F. Kaminski
  • Article
    | Open Access

    The exciton Mott transition refers to a transition from an insulating state of gas-like excitons to strongly correlated electron-hole plasma phases in photoexcited semiconductors. Here the authors experimentally study such a transition in black phosphorus and reveal its quantum critical properties.

    • Binjie Zheng
    • , Junzhuan Wang
    •  & Xiaomu Wang
  • Article
    | Open Access

    It is currently debated how to reliably distinguish liquid–liquid phase separation (LLPS) from other mechanisms. Here the authors report model-free calibrated half-FRAP (MOCHA-FRAP) to probe the barrier at the condensate interface that is responsible for preferential internal mixing in LLPS.

    • Fernando Muzzopappa
    • , Johan Hummert
    •  & Fabian Erdel
  • Article
    | Open Access

    Light penetration and overheating are major issues facing the application of photothermal therapy. Here, the authors develop a temperature responsive hydrogel optical waveguide for controlled delivery of light to deep tumours and demonstrate biocompatibility and temperature responsive phototherapy in vivo

    • Guoyin Chen
    • , Kai Hou
    •  & Meifang Zhu
  • Article
    | Open Access

    The authors introduce Bond-selective Intensity Diffraction Tomography, a computational mid-infrared photothermal microscopy technique based on a standard bright-field microscope and an add-on pulsed light source. It recovers both mid-infrared spectra and bond-selective 3D refractive index maps based on intensity-only measurements.

    • Jian Zhao
    • , Alex Matlock
    •  & Ji-Xin Cheng
  • Article
    | Open Access

    Super-resolution microscopy techniques can be challenging for live cells and thick samples. Here, the authors propose a method to reduce beam intensity and remove out-of-focus fluorescence background in image-scanning microscopy (ISM) and its combination with stimulated emission depletion (STED).

    • Giorgio Tortarolo
    • , Alessandro Zunino
    •  & Giuseppe Vicidomini
  • Article
    | Open Access

    There are many possible mechanisms of high-harmonic generation from crystals. Here the authors discuss the role of the Bloch oscillation to nonlinear response of the crystal and harmonic radiation from it.

    • Jan Reislöhner
    • , Doyeong Kim
    •  & Adrian N. Pfeiffer
  • Article
    | Open Access

    Here, the authors predict that plasmons in two-dimensional materials with closely located electron and hole Fermi pockets can be amplified when an electrical current bias is applied along the displaced electron-hole pockets, without the need for an external gain medium.

    • Sang Hyun Park
    • , Michael Sammon
    •  & Tony Low
  • Article
    | Open Access

    The recently demonstrated approaches to fabrication of quantum emitters in silicon result in their random positioning, hindering applications in quantum photonic integrated circuits. Here the authors demonstrate controlled fabrication of telecom-wavelength quantum emitters in silicon wafers by focused ion beams.

    • Michael Hollenbach
    • , Nico Klingner
    •  & Georgy V. Astakhov
  • Article
    | Open Access

    Applications of ultra-low-loss photonic circuitry in quantum photonics, in particular including triggered single photon sources, are rare. Here, the authors show how InAs quantum dot single photon sources can be integrated onto wafer-scale, CMOS compatible ultra-low loss silicon nitride photonic circuits.

    • Ashish Chanana
    • , Hugo Larocque
    •  & Marcelo Davanco
  • Article
    | Open Access

    ‘Giant atom’ physics occurs when the size of the atomic system becomes comparable to the wavelength of the light it interacts with. For atoms, such a regime is impossible to reach, however, for artificial atomic systems such ‘giant atom’ physics can be explored. Here, Wang et al demonstrate giant spin ensembles, consisting of magnetic spheres coupled to a microwave waveguide.

    • Zi-Qi Wang
    • , Yi-Pu Wang
    •  & J. Q. You
  • Article
    | Open Access

    The realization of Jones matrix with full eight free parameters is particularly challenging. Here, the authors construct spatially varying Jones matrix with eight free parameters by cascading two-layer metasurfaces and use it for new optical functionalities.

    • Yanjun Bao
    • , Fan Nan
    •  & Baojun Li
  • Article
    | Open Access

    Lead halide perovskites have recently emerged as a promising platform for the study of polariton superfluidity at room temperature. Here the authors report a complete set of quantum fluid phase transitions in both 1D and 2D homogeneous single crystals of CsPbBr3.

    • Kai Peng
    • , Renjie Tao
    •  & Wei Bao
  • Article
    | Open Access

    Fabrication errors limit the scaling of programmable photonic circuits. Here the authors show how a broad class of circuits can be made asymptotically fault-tolerant, where the effect of errors remains controlled regardless of the circuit’s size.

    • Ryan Hamerly
    • , Saumil Bandyopadhyay
    •  & Dirk Englund
  • Article
    | Open Access

    Traditional methods for cell stiffness measurements are limited by long processing times and unsuitability for multiple cell analysis. Here, the authors demonstrate a fast technique based on acoustic stimulation and holographic imaging to reconstruct whole-cell stiffness maps of individual and multiple cells.

    • Rahmetullah Varol
    • , Zeynep Karavelioglu
    •  & Huseyin Uvet
  • Article
    | Open Access

    Holography recreates both the amplitude and wave front of a three dimensional object, meaning that the observer perceives the image in the nearly same way as they would the true object. Creating such holographic images is challenging computationally, and requires extremely fast display update. Here, the authors combine a fast memoryless computation algorithm with the ultra-rapid writing based on all-optical switching of a ferrimagnetic film.

    • M. Makowski
    • , J. Bomba
    •  & A. Stupakiewicz
  • Article
    | Open Access

    Here the authors report the development of a topological nonlinear parametric amplification in a dimerized, Su-Schrieffer-Heeger waveguide. Kerr-induced chiral symmetry breaking is demonstrated, showcasing how nonlinearities may control transitions of topological modes to bulk states.

    • Byoung-Uk Sohn
    • , Yue-Xin Huang
    •  & Dawn T. H. Tan
  • Article
    | Open Access

    Future optical devices, e.g., for AR and VR, will require sophisticated flat metaoptics with unique optical functionalities. The authors demonstrate a metaobjective based on electrically switchable metallic polymer metalenses, whose optical states and focal length is adjustable via CMOS compatible voltages.

    • Julian Karst
    • , Yohan Lee
    •  & Harald Giessen
  • Article
    | Open Access

    The authors demonstrate on-the-fly reconfigurable optical trapping of organic polariton condensates which are delocalised over a macroscopic distance from the excitation region, holding great potential for future work on polaritonic lattice physics.

    • Mengjie Wei
    • , Wouter Verstraelen
    •  & Hamid Ohadi
  • Article
    | Open Access

    Floquet engineering aims at inducing new properties in materials with light. Here the authors have used pulses of variable durations, to investigate its applicability in the femtosecond domain. Surprisingly, they found that it holds to the few-cycle limit.

    • Matteo Lucchini
    • , Fabio Medeghini
    •  & Mauro Nisoli
  • Article
    | Open Access

    High-resolution molecular spectroscopy with cryogenic setups is hampered by the lack of a skilled interrogation tool. Here, the authors demonstrate absolute metrology of cold rovibrational spectra at 1 kHz accuracy level, by coupling a Lamb-dip saturated-absorption cavity ring-down spectrometer to a buffer-gas cooling source.

    • Roberto Aiello
    • , Valentina Di Sarno
    •  & Pasquale Maddaloni
  • 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 integrate a photonic crystal, supporting photonic bound states in the continuum (BICs), with monolayer WSe2, and leverage the high energy confinement of the BIC modes to demonstrate coherent directional dark exciton emission.

    • Xuezhi Ma
    • , Kaushik Kudtarkar
    •  & Shoufeng Lan
  • Article
    | Open Access

    Controlling the high-power laser transmittance is built on the diverse manipulation of multiple nonlinear absorption processes in the nonlinear optical materials. Here, the authors demonstrate the crucial role of hot-carrier effect to tune the nonlinear absorption response in quasi-2D perovskite films.

    • Gang Wang
    • , Tanghao Liu
    •  & Guichuan Xing
  • Article
    | Open Access

    Light-matter interaction can induce changes to the properties of the system by creating hybrid collective states of light and molecular excitations, the so called polaritons. Here the authors use femtosecond pump-probe spectroscopy to explore exciton-polariton dynamics in a photosynthetic protein, light harvesting 2 complexes, and find evidence for rapid energy transfer to dark polariton states.

    • Fan Wu
    • , Daniel Finkelstein-Shapiro
    •  & Tönu Pullerits