• 2023
    Recent advances in laser self-injection locking to high-Q microresonators

    Nikita M Kondratiev, Valery E Lobanov, Artem E Shitikov, Ramzil R Galiev, Dmitry A Chermoshentsev, Nikita Yu Dmitriev, Andrey N Danilin, Evgeny A Lonshakov, Kirill N Min’kov, Daria M Sokol, Steevy J Cordette, Yi-Han Luo, Wei Liang, Junqiu Liu, Igor A Bilenko

    Frontiers of Physics 18 (2), 21305 (2023)

    A wideband, high-resolution vector spectrum analyzer for integrated photonics

    Yi-Han Luo, Baoqi Shi, Wei Sun, Ruiyang Chen, Sanli Huang, Zhongkai Wang, Jinbao Long, Chen Shen, Haiyan Jia, Zhichao Ye, Hairun Guo, Junqiu Liu

    arXiv preprint arXiv:2304.04295 (2023)

    Foundry manufacturing of tight-confinement, dispersion-engineered,ultralow-loss

    Zhichao Ye, Haiyan Jia, Zhangjun Huang, Chen Shen, Jinbao Long, Baoqi Shi, Yi-Han Luo, Lan Gao, Wei Sun, Hairun Guo, Jijun He, Junqiu Liu

    Photonics Research 11 (4), 558-568 (2023)

    silicon nitride photonic integrated circuits
    Programmable access to microresonator solitons with modulational sideband heating

    Huamin Zheng, Wei Sun, Xingxing Ding, Haoran Wen, Ruiyang Chen, Baoqi Shi, Yi-Han Luo, Jinbao Long, Chen Shen, Shan Meng, Hairun Guo, Junqiu Liu

    APL Photonics 8, 126110 (2023)

    Frequency-comb-linearized, widely tunable lasers for coherent ranging

    Baoqi Shi, Yi-Han Luo, Wei Sun, Yue Hu, Jinbao Long, Xue Bai, Anting Wang, Junqiu Liu

    arXiv preprint arXiv:2308.15875 (2023)

  • Publications from EPFL
    Integrated photonics enables continuous-beam electron phase modulation

    Jan-Wilke Henke, Arslan Sajid Raja, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, F Jasmin Kappert, Rui Ning Wang, Marcel Möller, Jiahe Pan, Junqiu Liu, Ofer Kfir, Claus Ropers, Tobias J Kippenberg

    Nature 600 (7890), 653-658（2021）

    Magnetic-free silicon nitride integrated optical isolator

    Hao Tian, Junqiu Liu, Anat Siddharth, Rui Ning Wang, Terence Blesin, Jijun He, Tobias J. Kippenberg, Sunil A. Bhave

    Nature Photonics 15 (11), 828-836（2021）

    Ultrafast optical circuit switching for data centers using integrated soliton micro-

    Arslan Sajid Raja, Sophie Lange, Maxim Karpov, Kai Shi, Xin Fu, Raphael Behrendt, Daniel Cletheroe, Anton Lukashchuk, Istvan Haller, Fotini Karinou, Benn Thomsen, Krzysztof Jozwik, Junqiu Liu, Paolo Costa, Tobias Jan Kippenberg, Hitesh Ballani

    Nature communications 12 (1), 1-7（2021）

    combs
    Laser soliton microcombs heterogeneously integrated on silicon

    Chao Xiang, Junqiu Liu, Joel Guo, Lin Chang, Rui Ning Wang, Wenle Weng, Jonathan Peters, Weiqiang Xie, Zeyu Zhang, Johann Riemensberger, Jennifer Selvidge, Tobias J Kippenberg, John E Bowers

    Science 373 (6550), 99-103（2021）

    Photonic chip-based resonant supercontinuum via pulse-driven Kerr microresonator

    Miles H Anderson, Romain Bouchand, Junqiu Liu, Wenle Weng, Ewelina Obrzud, Tobias Herr, Tobias J Kippenberg

    Optica 8 (6), 771-779（2021）

    solitons
    Difference-frequency generation in optically poled silicon nitride waveguides

    Ezgi Sahin, Boris Zabelich, Ozan Yakar, Edgars Nitiss, Junqiu Liu, Rui N Wang, Tobias J Kippenberg, Camille-Sophie Brès

    Nanophotonics 10 (7), 1923-1930（2021）

    Emergent nonlinear phenomena in a driven dissipative photonic dimer

    Alexey Tikan, Johann Riemensberger, Kenichi Komagata, Simon Hönl, Mikhail Churaev, Connor Skehan, Hairun Guo, Rui Ning Wang, Junqiu Liu, Paul Seidler, Tobias J Kippenberg

    Nature Physics 17 (5), 604-610（2021）

    High-yield, wafer-scale fabrication of ultralow-loss, dispersion-engineered silicon

    Junqiu Liu, Guanhao Huang, Rui Ning Wang, Jijun He, Arslan S Raja, Tianyi Liu, Nils J Engelsen, Tobias J Kippenberg

    Nature Communications 12 (1), 1-9（2021）

    nitride photonic circuits
    Low-loss integrated nanophotonic circuits with layered semiconductor materials

    Jijun He, Ioannis Paradisanos, Tianyi Liu, Alisson R Cadore, Junqiu Liu, Mikhail Churaev, Rui Ning Wang, Arslan S Raja, Clément Javerzac-Galy, Philippe Roelli, Domenico De Fazio, Barbara LT Rosa, Sefaattin Tongay, Giancarlo Soavi, Andrea C Ferrari, Tobias J Kippenberg

    Nano Letters 21 (7), 2709-2718（2021）

    Gain-switched semiconductor laser driven soliton microcombs

    Wenle Weng, Aleksandra Kaszubowska-Anandarajah, Jijun He, Prajwal D Lakshmijayasimha, Erwan Lucas, Junqiu Liu, Prince M Anandarajah, Tobias J Kippenberg

    Nature Communications 12 (1), 1-9（2021）

    Soliton microcomb based spectral domain optical coherence tomography

    Paul J Marchand, Johann Riemensberger, J Connor Skehan, Jia-Jung Ho, Martin HP Pfeiffer, Junqiu Liu, Christoph Hauger, Theo Lasser, Tobias J Kippenberg

    Nature Communications 12 (1), 1-9（2021）

    Parallel convolutional processing using an integrated photonic tensor core

    J Feldmann, N Youngblood, M Karpov, H Gehring, X Li, M Stappers, M Le Gallo, X Fu, A Lukashchuk, AS Raja, J Liu, CD Wright, A Sebastian, TJ Kippenberg, WHP Pernice, H Bhaskaran

    Nature 589 (7840), 52-58（2021）

    Dynamics of soliton self-injection locking in optical microresonators

    Andrey S Voloshin, Nikita M Kondratiev, Grigory V Lihachev, Junqiu Liu, Valery E Lobanov, Nikita Yu Dmitriev, Wenle Weng, Tobias J Kippenberg, Igor A Bilenko

    Nature communications 12 (1), 235（2021）

    Nanophotonic supercontinuum-based mid-infrared dual-comb spectroscopy

    Hairun Guo, Wenle Weng, Junqiu Liu, Fan Yang, Wolfgang Hänsel, Camille Sophie Brès, Luc Thévenaz, Ronald Holzwarth, Tobias J Kippenberg

    Optica 7 (9), 1181-1188（2020）

    Broadband quasi-phase-matching in dispersion-engineered all-optically poled

    Edgars Nitiss, Boris Zabelich, Ozan Yakar, Junqiu Liu, Rui Ning Wang, Tobias J Kippenberg, Camille-Sophie Brès

    Photonics Research 8 (9), 1475-1483（2020）

    silicon nitride waveguides
    Frequency division using a soliton-injected semiconductor gain-switched frequency

    Wenle Weng, Aleksandra Kaszubowska-Anandarajah, Junqiu Liu, Prince M Anandarajah, Tobias J Kippenberg

    Science advances 6 (39), eaba2807（2020）

    comb
    Reconfigurable radiofrequency filters based on versatile soliton microcombs

    Jianqi Hu, Jijun He, Junqiu Liu, Arslan S Raja, Maxim Karpov, Anton Lukashchuk, Tobias J Kippenberg, Camille-Sophie Brès

    Nature communications 11 (1), 4377（2020）

    Monolithic piezoelectric control of soliton microcombs

    Junqiu Liu, Hao Tian, Erwan Lucas, Arslan S Raja, Grigory Lihachev, Rui Ning Wang, Jijun He, Tianyi Liu, Miles H Anderson, Wenle Weng, Sunil A Bhave, Tobias J Kippenberg

    Nature 583, 385-390（2020）

    Hybrid integrated photonics using bulk acoustic resonators

    Hao Tian, Junqiu Liu, Bin Dong, J Connor Skehan, Michael Zervas, Tobias J Kippenberg, Sunil A Bhave

    Nature Communications 11 (1), 1-8（2020）

    Integrated turnkey soliton microcombs

    Boqiang Shen, Lin Chang, Junqiu Liu, Heming Wang, Qi-Fan Yang, Chao Xiang, Rui Ning Wang, Jijun He, Tianyi Liu, Weiqiang Xie, Joel Guo, David Kinghorn, Lue Wu, Qing-Xin Ji, Tobias J Kippenberg, Kerry Vahala, John E Bowers

    Nature 582 (7812), 365-369（2020）

    Massively parallel coherent laser ranging using a soliton microcomb

    Johann Riemensberger, Anton Lukashchuk, Maxim Karpov, Wenle Weng, Erwan Lucas, Junqiu Liu, Tobias J Kippenberg

    Nature 581 (7807), 164-170（2020）

    Photonic microwave generation in the X- and K-band using integrated soliton microcombs

    Junqiu Liu, Erwan Lucas, Arslan S Raja, Jijun He, Johann Riemensberger, Rui Ning Wang, Maxim Karpov, Hairun Guo, Romain Bouchand, Tobias J Kippenberg

    Nature Photonics 14, 486-491（2020）

    Chip-based soliton microcomb module using a hybrid semiconductor laser

    Arslan S Raja, Junqiu Liu, Nicolas Volet, Rui Ning Wang, Jijun He, Erwan Lucas, Romain Bouchandand, Paul Morton, John Bowers, Tobias J Kippenberg

    Optics Express 28 (3), 2714-2721（2020）

    Observation of stimulated Brillouin scattering in silicon nitride integrated waveguides

    Flavien Gyger, Junqiu Liu, Fan Yang, Jijun He, Arslan S Raja, Rui Ning Wang, Sunil A Bhave, Tobias J Kippenberg, Luc Thévenaz

    Physical Review Letters 124 (1), 013902（2020）

    Dynamics of soliton crystals in optical microresonators

    Maxim Karpov, Martin HP Pfeiffer, Hairun Guo, Wenle Weng, Junqiu Liu, Tobias J Kippenberg

    Nature Physics 15 (10), 1071-1077（2019）

    Thermally stable access to microresonator solitons via slow pump modulation

    Thibault Wildi, Victor Brasch, Junqiu Liu, Tobias J Kippenberg, Tobias Herr

    Optics Letters 44 (18), 4447-4450（2019）

    Thermorefractive noise in silicon-nitride microresonators

    Guanhao Huang, Erwan Lucas, Junqiu Liu, Arslan S Raja, Grigory Lihachev, Michael L Gorodetsky, Nils J Engelsen, Tobias J Kippenberg

    Physical Review A 99 (6), 061801（2019）

    Visible-near-middle infrared spanning supercontinuum generation in a silicon

    Dmitry Martyshkin, Vladimir Fedorov, Taylor Kesterson, Sergey Vasilyev, Hairun Guo, Junqiu Liu, Wenle Weng, Konstantin Vodopyanov, Tobias J Kippenberg, Sergey Mirov

    Optical Materials Express 9 (6), 2553-2559（2019）

    nitride (Si₃N₄) waveguide
    Electrically driven photonic integrated soliton microcomb

    Arslan S Raja, Andrey S Voloshin, Hairun Guo, Sofya E Agafonova, Junqiu Liu, Alexander S Gorodnitskiy, Maxim Karpov, Nikolay G Pavlov, Erwan Lucas, Ramzil R Galiev, Artem E Shitikov, John D Jost, Michael L Gorodetsky, Tobias J Kippenberg

    2019 Optical Fiber Communications Conference and Exhibition (OFC), 1-3（2019）

    A microphotonic astrocomb

    E Obrzud, M Rainer, A Harutyunyan, MH Anderson, J Liu, M Geiselmann, ...

    Nature Photonics 13 (1), 31（2019）

    Ultra-smooth silicon nitride waveguides based on the Damascene reflow process:

    Martin HP Pfeiffer, Junqiu Liu, Arslan S Raja, Tiago Morais, Bahareh Ghadiani, Tobias J Kippenberg

    Optica 5 (7), 884-892（2018）

     

    fabrication and loss origins
    Photonic Damascene Process for Low-Loss, High-Confinement Silicon Nitride Waveguides

    Martin Hubert Peter Pfeiffer, Clemens Herkommer, Junqiu Liu, Tiago Morais, Michael Zervas, Michael Geiselmann, Tobias J Kippenberg

    IEEE Journal of Selected Topics in Quantum Electronics 24 (4), 1-11（2018）

    Ultralow-power chip-based soliton microcombs for photonic integration

    Junqiu Liu, Arslan S Raja, Maxim Karpov, Bahareh Ghadiani, Martin HP Pfeiffer, Botao Du, Nils J Engelsen, Hairun Guo, Michael Zervas, Tobias J Kippenberg

    Optica 5 (10), 1347-1353（2018）

    Double inverse nanotapers for efficient light coupling to integrated photonic devices

    Junqiu Liu, Arslan S Raja, Martin HP Pfeiffer, Clemens Herkommer, Hairun Guo, Michael Zervas, Michael Geiselmann, Tobias J Kippenberg

    Opt. Lett. 43 (14), 3200-3203（2018）

    Highly efficient coupling of crystalline microresonators to integrated photonic waveguides

    M Anderson, NG Pavlov, JD Jost, G Lihachev, J Liu, T Morais, M Zervas, ML Gorodetsky, TJ Kippenberg

    Optics Letters 43 (9), 2106-2109（2018）

    Photonic chip-based soliton frequency combs covering the biological imaging window

    Maxim Karpov, Martin HP Pfeiffer, Junqiu Liu, Anton Lukashchuk, Tobias J Kippenberg

    Nature Communications 9 (1), 1146（2018）

    2017  Publications

    Inter-mode breather solitons in optical microresonators

    Hairun Guo, Erwan Lucas, Martin HP Pfeiffer, Maxim Karpov, Miles Anderson, Junqiu Liu, Michael Geiselmann, John D Jost, Tobias J Kippenberg

    Phys. Rev. X 7 (4), 041055（2017）

    Coupling Ideality of Integrated Planar High-Q Microresonators

    Martin HP Pfeiffer, Junqiu Liu, Michael Geiselmann, Tobias J Kippenberg

    Phys. Rev. Applied 7 (2), 024026（2017）

    Octave-spanning dissipative Kerr soliton frequency combs in Si₃N₄ microresonators

    Martin HP Pfeiffer, Clemens Herkommer, Junqiu Liu, Hairun Guo, Maxim Karpov, Erwan Lucas, Michael Zervas, Tobias J Kippenberg

    Optica 4 (7), 684-691（2017）

    Frequency-comb-assisted broadband precision spectroscopy with cascaded diode lasers

    Junqiu Liu, Victor Brasch, Martin HP Pfeiffer, Arne Kordts, Ayman N Kamel, Hairun Guo, Michael Geiselmann, Tobias J Kippenberg

    Opt. Lett. 41 (13), 3134-4147（2016）

    Photo-induced cascaded harmonic and comb generation in silicon nitride

    Jianqi Hu, Edgars Nitiss, Jijun He, Junqiu Liu, Ozan Yakar, Wenle Weng, Tobias J Kippenberg, Camille-Sophie Brès

    Science Advances 8 (50), eadd8252 (2022)

    microresonators
    Soliton formation and spectral translation into visible on CMOS-compatible

    Chengli Wang, Jin Li, Ailun Yi, Zhiwei Fang, Liping Zhou, Zhe Wang, Rui Niu, Yang Chen, Jiaxiang Zhang, Ya Cheng, Junqiu Liu, Chun-Hua Dong, Xin Ou

    Light: Science & Applications 11 (1), 341 (2022)

    4H-silicon-carbide-on-insulator platform
    A photonic integrated continuous-travelling-wave parametric amplifier

    Johann Riemensberger, Nikolai Kuznetsov, Junqiu Liu, Jijun He, Rui Ning Wang, Tobias J Kippenberg

    Nature 612 (7938), 56-61 (2022)

    Zero dispersion Kerr solitons in optical microresonators

    Miles H Anderson, Wenle Weng, Grigory Lihachev, Alexey Tikan, Junqiu Liu, Tobias J Kippenberg

    Nature Communications 13 (1), 1-10 (2022)

    Cavity-mediated electron-photon pairs

    Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, Jan-Wilke Henke, Arslan Sajid Raja, F Jasmin Kappert, Rui Ning Wang, Hugo Lourenço-Martins, Zheru Qiu, Junqiu Liu, Ofer Kfir, Tobias J Kippenberg, Claus Ropers

    Science 377 (6607), 777-780 (2022)

    Bayesian tomography of high-dimensional on-chip biphoton frequency combs with

    Hsuan-Hao Lu, Karthik V Myilswamy, Ryan S Bennink, Suparna Seshadri, Mohammed S Alshaykh, Junqiu Liu, Tobias J Kippenberg, Daniel E Leaird, Andrew M Weiner, Joseph M Lukens

    Nature communications 13 (1), 1-12 (2022)

    randomized measurements
    Low-noise frequency-agile photonic integrated lasers for coherent ranging

    Grigory Lihachev, Johann Riemensberger, Wenle Weng, Junqiu Liu, Hao Tian, Anat Siddharth, Viacheslav Snigirev, Vladimir Shadymov, Andrey Voloshin, Rui Ning Wang, Jijun He, Sunil A Bhave, Tobias J Kippenberg

    Nature Communications 13 (1), 1-10 (2022)

    A photonic integrated circuit–based erbium-doped amplifier

    Yang Liu, Zheru Qiu, Xinru Ji, Anton Lukashchuk, Jijun He, Johann Riemensberger, Martin Hafermann, Rui Ning Wang, Junqiu Liu, Carsten Ronning, Tobias J Kippenberg

    Science 376 (6599), 1309-1313 (2022)

    Probing material absorption and optical nonlinearity of integrated photonic materials

    Maodong Gao, Qi-Fan Yang, Qing-Xin Ji, Heming Wang, Lue Wu, Boqiang Shen, Junqiu Liu, Guanhao Huang, Lin Chang, Weiqiang Xie, Su-Peng Yu, Scott B Papp, John E Bowers, Tobias J Kippenberg, Kerry J Vahala

    Nature Communications 13 (1), 3323 (2022)

    Dual chirped microcomb based parallel ranging at megapixel-line rates

    Anton Lukashchuk, Johann Riemensberger, Maxim Karpov, Junqiu Liu, Tobias J Kippenberg

    Nature Communications 13 (1), 3280 (2022)

    Compact, spatial-mode-interaction-free, ultralow-loss, nonlinear photonic

    Xinru Ji, Junqiu Liu, Jijun He, Rui Ning Wang, Zheru Qiu, Johann Riemensberger, Tobias J Kippenberg

    Communications Physics 5 (1), 84 (2022)

    integrated circuits
    Protected generation of dissipative Kerr solitons in supermodes of coupled optical

    Alexey Tikan, Aleksandr Tusnin, Johann Riemensberger, Mikhail Churaev, Xinru Ji, Kenichi Nicolas Komagata, Rui Ning Wang, Junqiu Liu, Tobias J Kippenberg

    Science Advances 8 (13), eabm6982 (2022)

    microresonators
    Near ultraviolet photonic integrated lasers based on silicon nitride

    Anat Siddharth, Thomas Wunderer, Grigory Lihachev, Andrey S Voloshin, Camille Haller, Rui Ning Wang, Mark Teepe, Zhihong Yang, Junqiu Liu, Johann Riemensberger, Nicolas Grandjean, Noble Johnson, Tobias J Kippenberg

    APL Photonics 7 (4), 046108 (2022)

    Platicon microcomb generation using laser self-injection locking

    Grigory Lihachev, Wenle Weng, Junqiu Liu, Lin Chang, Joel Guo, Jijun He, Rui Ning Wang, Miles H Anderson, Yang Liu, John E Bowers, Tobias J Kippenberg

    Nature Communications 13 (1), 1-9 (2022)

    Polarization selective ultra-broadband wavelength conversion in silicon nitride

    Arman Ayan, Florent Mazeas, Junqiu Liu, Tobias J Kippenberg, Camille-Sophie Brès

    Optics Express 30 (3), 4342-4350 (2022)

    waveguides
    An integrated wavemeter based on fully-stabilized resonant electro-optic frequency comb

    Rui Niu, Shuai Wan, Wenjian Li, Pi-Yu Wang, Fang-Wen Sun, Fang Bo, Junqiu Liu, Guang-Can Guo, Chun-Hua Dong

    Communications Physics 6 (1), 329 (2023)

    Photorefraction-assisted self-emergence of dissipative Kerr solitons

    Shuai Wan, Pi-Yu Wang, Rui Ma, Zheng-Yu Wang, Rui Niu, De-Yong He, Guang-Can Guo, Fang Bo, Junqiu Liu, Chun-Hua Dong

    arXiv preprint arXiv:2305.02590 (2023)

    Ultrafast tunable lasers using lithium niobate integrated photonics

    Viacheslav Snigirev, Annina Riedhauser, Grigory Lihachev, Mikhail Churaev, Johann Riemensberger, Rui Ning Wang, Anat Siddharth, Guanhao Huang, Charles Möhl, Youri Popoff, Ute Drechsler, Daniele Caimi, Simon Hönl, Junqiu Liu, Paul Seidler, Tobias J Kippenberg

    Nature 615 (7952), 411-417 (2023)

    Time-Resolved Hanbury Brown–Twiss Interferometry of On-Chip Biphoton Frequ-

    Karthik V Myilswamy, Suparna Seshadri, Hsuan-Hao Lu, Mohammed S Alshaykh, Junqiu Liu, Tobias J Kippenberg, Andrew M Weiner, Joseph M Lukens

    Physical Review Applied 19 (3), 034019 (2023)

    ency Combs Using Vernier Phase Modulation
    Architecture for integrated RF photonic downconversion of electronic signals

    Nathan P O’Malley, Keith A McKinzie, Mohammed S Alshaykh, Junqiu Liu, Daniel E Leaird, Tobias J Kippenberg, Jason D McKinney, Andrew M Weiner

    Optics Letters 48 (1), 159-162 (2023)

    Sub-kHz-linewidth external-cavity laser (ECL) with Si₃N₄ resonator used as a

    Pascal Maier, Yung Chen, Yilin Xu, Yiyang Bao, Matthias Blaicher, Dimitri Geskus, Ronald Dekker, Junqiu Liu, Philipp-Immanuel Dietrich, Huanfa Peng, Sebastian Randel, Wolfgang Freude, Tobias J Kippenberg, Christian Koos

    Journal of Lightwave Technology (2023)

    tunable pump for a Kerr frequency comb
    Chaotic microcomb-based parallel ranging

    Anton Lukashchuk, Johann Riemensberger, Aleksandr Tusnin, Junqiu Liu, Tobias J Kippenberg

    Nature Photonics 17 (9), 814-821 (2023)

    A chip-scale second-harmonic source via injection-locked all-optical poling

    Marco Clementi, Edgars Nitiss, Elena Durán-Valdeiglesias, Sofiane Belahsene, Junqiu Liu, Tobias J Kippenberg, Hélène Debrégeas, Camille-Sophie Brès

    arXiv preprint arXiv:2307.00163 (2023)

    Towards efficient broadband parametric conversion in ultra-long Si₃N₄ waveguides

    Arman Ayan, Junqiu Liu, Tobias J Kippenberg, Camille-Sophie Brès

    Optics Express 31 (24), 40916-40927 (2023)

    A heterogeneously integrated lithium niobate-on-silicon nitride photonic platform

    Mikhail Churaev, Rui Ning Wang, Annina Riedhauser, Viacheslav Snigirev, Terence Blésin, Charles Möhl, Miles H Anderson, Anat Siddharth, Youri Popoff, Ute Drechsler, Daniele Caimi, Simon Hönl, Johann Riemensberger, Junqiu Liu, Paul Seidler, Tobias J Kippenberg

    Nature Communications 14 (1), 3499 (2023)