Latest Research

  • Letter |

    Optical non-reciprocity is experimentally realized with Rb atoms embedded in a ring cavity at room temperature. Random thermal motion of the atoms causes the probe-direction-dependent response assisted by a unidirectional control laser field.

    • Shicheng Zhang
    • , Yiqi Hu
    • , Gongwei Lin
    • , Yueping Niu
    • , Keyu Xia
    • , Jiangbin Gong
    •  & Shangqing Gong
  • Letter |

    A nonlinear coherent spectroscopy that uses three slightly different repetition-rate frequency combs is demonstrated. A 2D spectrum with comb resolution is generated using only 365 milliseconds of data, almost 600 times faster than previous approaches.

    • Bachana Lomsadze
    • , Brad C. Smith
    •  & Steven T. Cundiff
  • Article |

    Synchronization of two optical microresonator frequency combs coupled over distances larger than 20 metres is experimentally realized, opening up applications of microresonator combs and offering a chip-based photonic platform for exploring complex nonlinear systems.

    • Jae K. Jang
    • , Alexander Klenner
    • , Xingchen Ji
    • , Yoshitomo Okawachi
    • , Michal Lipson
    •  & Alexander L. Gaeta
  • Article |

    Perovskite quantum dots (QDs) are synthesized via an anion-exchange process where CsPbBr3 is used to realize a highly efficient red light-emitting diode (LED). The perovskite QD-based LED exhibits the highest external quantum efficiency of more than 20% compared with perovskite LEDs.

    • Takayuki Chiba
    • , Yukihiro Hayashi
    • , Hinako Ebe
    • , Keigo Hoshi
    • , Jun Sato
    • , Shugo Sato
    • , Yong-Jin Pu
    • , Satoru Ohisa
    •  & Junji Kido
  • Article |

    Up to three distinct frequency combs are simultaneously generated from an optical microresonator and a continuous-wave laser, enabling the deployment of dual- and triple-comb-based methods to applications unachievable by current technologies.

    • E. Lucas
    • , G. Lihachev
    • , R. Bouchand
    • , N. G. Pavlov
    • , A. S. Raja
    • , M. Karpov
    • , M. L. Gorodetsky
    •  & T. J. Kippenberg
  • Review Article |

    Over the past 10–15 years, quantitative phase imaging has moved from a research-driven to an application-focused field. This Review presents the main principles of operation and representative basic and clinical science applications.

    • YongKeun Park
    • , Christian Depeursinge
    •  & Gabriel Popescu
  • Article |

    Coherent extreme-ultraviolet emission through frustrated tunnelling ionization is observed from He atoms excited by intense few-cycle infrared laser pulses. Its intensity depends on the ellipticity and the carrier-envelope phase of the infrared laser.

    • Hyeok Yun
    • , Je Hoi Mun
    • , Sung In Hwang
    • , Seung Beom Park
    • , Igor A. Ivanov
    • , Chang Hee Nam
    •  & Kyung Taec Kim
  • Article |

    Non-reciprocal single-sideband modulation and mode conversion are realized in a low-loss integrated silicon waveguide, enabling >125 GHz operation bandwidths and up to 38 dB of non-reciprocal contrast between forward- and backward-propagating waves.

    • Eric A. Kittlaus
    • , Nils T. Otterstrom
    • , Prashanta Kharel
    • , Shai Gertler
    •  & Peter T. Rakich
  • Review Article |

    This Review covers recent progress in quantum technologies with optically addressable solid-state spins. A possible path to chip-scale quantum technologies through advances in nanofabrication, quantum control and materials engineering is described.

    • David D. Awschalom
    • , Ronald Hanson
    • , Jörg Wrachtrup
    •  & Brian B. Zhou
  • Article |

    Broadband terahertz (THz) pulses are generated from a laser filament with a near-infrared laser at the fundamental frequency and its second harmonic. The azimuthal angle and ellipticity of the THz pulses are arbitrarily controlled by the two lasers.

    • Zhelin Zhang
    • , Yanping Chen
    • , Sen Cui
    • , Feng He
    • , Min Chen
    • , Zhen Zhang
    • , Jin Yu
    • , Liming Chen
    • , Zhengming Sheng
    •  & Jie Zhang
  • Article |

    Black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with external quantum efficiencies of 35% across 2.5–3.5 μm at room temperature and a peak detectivity of 1.1 × 1010 cm Hz1/2 W–1 at 3.8 μm are demonstrated.

    • James Bullock
    • , Matin Amani
    • , Joy Cho
    • , Yu-Ze Chen
    • , Geun Ho Ahn
    • , Valerio Adinolfi
    • , Vivek Raj Shrestha
    • , Yang Gao
    • , Kenneth B. Crozier
    • , Yu-Lun Chueh
    •  & Ali Javey
  • Perspective |

    The parameters and issues that affect the accuracy of fluorescence molecular imaging are discussed and a means for ensuring reliable reproduction of the fluorescence signals in biological tissue is proposed.

    • Maximillian Koch
    • , Panagiotis Symvoulidis
    •  & Vasilis Ntziachristos
  • Letter |

    By selectively erasing the nonlinear coefficients in a lithium niobate crystal using a femtosecond laser, a 3D nonlinear photonic crystal, with an effective conversion efficiency comparable to that of the typical quasi-phase-matching processes, is demonstrated.

    • Dunzhao Wei
    • , Chaowei Wang
    • , Huijun Wang
    • , Xiaopeng Hu
    • , Dan Wei
    • , Xinyuan Fang
    • , Yong Zhang
    • , Dong Wu
    • , Yanlei Hu
    • , Jiawen Li
    • , Shining Zhu
    •  & Min Xiao
  • Article |

    A fully programmable two-qubit quantum processor with more than 200 components is demonstrated by using silicon photonic circuits. A two-qubit quantum approximate optimization algorithm and simulation of Szegedy quantum walks are implemented.

    • Xiaogang Qiang
    • , Xiaoqi Zhou
    • , Jianwei Wang
    • , Callum M. Wilkes
    • , Thomas Loke
    • , Sean O’Gara
    • , Laurent Kling
    • , Graham D. Marshall
    • , Raffaele Santagati
    • , Timothy C. Ralph
    • , Jingbo B. Wang
    • , Jeremy L. O’Brien
    • , Mark G. Thompson
    •  & Jonathan C. F. Matthews
  • Letter |

    Spin-polarized photon absorption and photoluminescence are reported in reduced-dimensional chiral perovskite materials. The finding indicates that such materials may in the future be useful as a photonic interface for spintronics.

    • Guankui Long
    • , Chongyun Jiang
    • , Randy Sabatini
    • , Zhenyu Yang
    • , Mingyang Wei
    • , Li Na Quan
    • , Qiuming Liang
    • , Abdullah Rasmita
    • , Mikhail Askerka
    • , Grant Walters
    • , Xiwen Gong
    • , Jun Xing
    • , Xinglin Wen
    • , Rafael Quintero-Bermudez
    • , Haifeng Yuan
    • , Guichuan Xing
    • , X. Renshaw Wang
    • , Datong Song
    • , Oleksandr Voznyy
    • , Mingtao Zhang
    • , Sjoerd Hoogland
    • , Weibo Gao
    • , Qihua Xiong
    •  & Edward H. Sargent
  • Article |

    By folding large spaces in time using an off-resonant Fabry–Pérot cavity in camera sensors, new capabilities such as ultrafast multi-zoom imaging and ultrafast multispectral imaging, of use for time-resolved imaging and depth-sensing optics, are found.

    • Barmak Heshmat
    • , Matthew Tancik
    • , Guy Satat
    •  & Ramesh Raskar
  • Letter |

    A three-dimensional nonlinear photonic crystal in ferroelectric barium calcium titanate that enables phase matching of nonlinear processes along an arbitrary direction, thereby removing constraints imposed by low-dimensional structures, is experimentally realized.

    • Tianxiang Xu
    • , Krzysztof Switkowski
    • , Xin Chen
    • , Shan Liu
    • , Kaloian Koynov
    • , Haohai Yu
    • , Huaijin Zhang
    • , Jiyang Wang
    • , Yan Sheng
    •  & Wieslaw Krolikowski
  • Article |

    A metalens is integrated into the design of an endoscopic optical coherence tomography catheter to achieve near-diffraction-limited imaging free of non-chromatic aberrations, offering high-resolution imaging well beyond the Rayleigh range of the input field.

    • Hamid Pahlevaninezhad
    • , Mohammadreza Khorasaninejad
    • , Yao-Wei Huang
    • , Zhujun Shi
    • , Lida P. Hariri
    • , David C. Adams
    • , Vivien Ding
    • , Alexander Zhu
    • , Cheng-Wei Qiu
    • , Federico Capasso
    •  & Melissa J. Suter
  • Review Article |

    Valleytronics in single-layer semiconductors is reviewed with an emphasis on controlling the valley degree of freedom with light as well as potential applications.

    • Kin Fai Mak
    • , Di Xiao
    •  & Jie Shan
  • Letter |

    Nanocrystals assembled into metal–insulator–metal junctions can boost the efficiency of light generation from enhanced inelastic tunnelling to ~2%, which is a two orders of magnitude improvement over previous work, paving the way to on-chip ultrafast and ultracompact light sources.

    • Haoliang Qian
    • , Su-Wen Hsu
    • , Kargal Gurunatha
    • , Conor T. Riley
    • , Jie Zhao
    • , Dylan Lu
    • , Andrea R. Tao
    •  & Zhaowei Liu
  • Letter |

    Linewidth broadening of a phonon laser operated at an exceptional point of a compound optomechanical system is experimentally demonstrated.

    • Jing Zhang
    • , Bo Peng
    • , Şahin Kaya Özdemir
    • , Kevin Pichler
    • , Dmitry O. Krimer
    • , Guangming Zhao
    • , Franco Nori
    • , Yu-xi Liu
    • , Stefan Rotter
    •  & Lan Yang
  • Letter |

    By seeding a non-resonant aluminium-gallium-arsenide-on-insulator nanowaveguide with 10-GHz picosecond pulses at a low pump power of 85 mW, a single energy-efficient frequency comb source carrying 661 Tbit s–1 of data, equivalent to more than the total Internet traffic today, is achieved.

    • Hao Hu
    • , Francesco Da Ros
    • , Minhao Pu
    • , Feihong Ye
    • , Kasper Ingerslev
    • , Edson Porto da Silva
    • , Md. Nooruzzaman
    • , Yoshimichi Amma
    • , Yusuke Sasaki
    • , Takayuki Mizuno
    • , Yutaka Miyamoto
    • , Luisa Ottaviano
    • , Elizaveta Semenova
    • , Pengyu Guan
    • , Darko Zibar
    • , Michael Galili
    • , Kresten Yvind
    • , Toshio Morioka
    •  & Leif K. Oxenløwe
  • Letter |

    A nonlinear charge oscillation driven by a 6 fs light field of 11 MV cm–1 is observed in a layered organic superconductor. The initial response time of the oscillation on the timescale of 10 fs clarifies that Coulomb repulsion is essential for the superconductivity.

    • Y. Kawakami
    • , T. Amano
    • , Y. Yoneyama
    • , Y. Akamine
    • , H. Itoh
    • , G. Kawaguchi
    • , H. M. Yamamoto
    • , H. Kishida
    • , K. Itoh
    • , T. Sasaki
    • , S. Ishihara
    • , Y. Tanaka
    • , K. Yonemitsu
    •  & S. Iwai
  • Letter |

    Highly crystalline BaTiS3 has been shown to exhibit record-breaking birefringence of 0.76 in the wavelength range of 7–16 μm. The large anisotropy is a result of its quasi-one-dimensional structure.

    • Shanyuan Niu
    • , Graham Joe
    • , Huan Zhao
    • , Yucheng Zhou
    • , Thomas Orvis
    • , Huaixun Huyan
    • , Jad Salman
    • , Krishnamurthy Mahalingam
    • , Brittany Urwin
    • , Jiangbin Wu
    • , Yang Liu
    • , Thomas E. Tiwald
    • , Stephen B. Cronin
    • , Brandon M. Howe
    • , Matthew Mecklenburg
    • , Ralf Haiges
    • , David J. Singh
    • , Han Wang
    • , Mikhail A. Kats
    •  & Jayakanth Ravichandran
  • Letter |

    Using high-temperature gas mixtures as the generation medium to increase the translational velocity of Xe atoms through the focus of a femtosecond enhancement cavity, phase-matched extreme-ultraviolet emission at a repetition rate of 77 MHz and with an average power of ~ 2 mW in a single harmonic order is achieved.

    • Gil Porat
    • , Christoph M. Heyl
    • , Stephen B. Schoun
    • , Craig Benko
    • , Nadine Dörre
    • , Kristan L. Corwin
    •  & Jun Ye
  • Letter |

    Near-infrared femtosecond laser pulses are sent to a Si or ZnO crystal to generate high-harmonic waves via static or transient field-induced optical nonlinearities. The beam profile of the high-harmonic emission is controlled by electronic methods.

    • G. Vampa
    • , T. J. Hammond
    • , M. Taucer
    • , Xiaoyan Ding
    • , X. Ropagnol
    • , T. Ozaki
    • , S. Delprat
    • , M. Chaker
    • , N. Thiré
    • , B. E. Schmidt
    • , F. Légaré
    • , D. D. Klug
    • , A. Yu. Naumov
    • , D. M. Villeneuve
    • , A. Staudte
    •  & P. B. Corkum
  • Article |

    A scheme for generating intense single-cycle pulses in the 5–14 μm wavelength range is proposed. The generation mechanism is described by photon frequency downshifting of an off-the-shelf Ti:sapphire laser in a tailored plasma density structure.

    • Zan Nie
    • , Chih-Hao Pai
    • , Jianfei Hua
    • , Chaojie Zhang
    • , Yipeng Wu
    • , Yang Wan
    • , Fei Li
    • , Jie Zhang
    • , Zhi Cheng
    • , Qianqian Su
    • , Shuang Liu
    • , Yue Ma
    • , Xiaonan Ning
    • , Yunxiao He
    • , Wei Lu
    • , Hsu-Hsin Chu
    • , Jyhpyng Wang
    • , Warren B. Mori
    •  & Chan Joshi
  • Article |

    While modifications of emission and absorption rates are commonplace in photonics, similar manipulations of emitter transition frequencies are challenging. Here, 2D polaritons in graphene are predicted to enable non-vertical electronic transitions in a quantum well, controlling the transition frequencies by inducing an effective non-locality.

    • Yaniv Kurman
    • , Nicholas Rivera
    • , Thomas Christensen
    • , Shai Tsesses
    • , Meir Orenstein
    • , Marin Soljačić
    • , John D. Joannopoulos
    •  & Ido Kaminer
  • Article |

    Eigenmodes of photonic crystal defects have now been topologically protected in an experimental demonstration that also shows how to minimize the mode volume.

    • Jiho Noh
    • , Wladimir A. Benalcazar
    • , Sheng Huang
    • , Matthew J. Collins
    • , Kevin P. Chen
    • , Taylor L. Hughes
    •  & Mikael C. Rechtsman
  • Article |

    Third-harmonic generation and four-wave mixing of light can be enhanced in graphene with gate tuning to adjust the doping level. The findings may lead to new graphene-based nonlinear optoelectronic devices.

    • Tao Jiang
    • , Di Huang
    • , Jinluo Cheng
    • , Xiaodong Fan
    • , Zhihong Zhang
    • , Yuwei Shan
    • , Yangfan Yi
    • , Yunyun Dai
    • , Lei Shi
    • , Kaihui Liu
    • , Changgan Zeng
    • , Jian Zi
    • , J. E. Sipe
    • , Yuen-Ron Shen
    • , Wei-Tao Liu
    •  & Shiwei Wu