2025

• 7 Mar 2025
  Our paper on intramodal and intermodal acousto-optic modulation on an etchless lithium niobate integrated platform is accepted for publication in Laser & Photonics Reviews.
• 6 Mar 2025
  Our paper on lithium tantalate microring cavities with Q factor exceeding 10 million is accepted for publication in Photonics Research.
• 5 Mar 2025
  Our paper on photonic Floquet-Bloch oscillations dominated by Floquet gauge is accepted for publication in Laser & Photonics Reviews.
• 20 Feb 2025
  Yuan Li receives the 2024 EE Department's Postgraduate Research Output Award.
• 30 Jan 2025
  Prof. Sun is elected an Optica Fellow "for outstanding contributions to integrated photonics, optoelectronics, and optomechanics."
• 14 Jan 2025
  Our paper on topological bound states in the continuum in a non-Hermitian photonic system is published in Nanophotonics and featured as a cover article.
• 9 Jan 2025
  Prof. Sun starts to serve Advanced Photonics Nexus as an Editorial Board Member.

2024

• 25 Nov 2024
  Our paper on etchless Dion-Jacobson-phase perovskite surface-emitting circular Bragg lasers is published in ACS Photonics and featured as a cover article.
• 15 Oct 2024
  Our paper on topological parametric phonon oscillator is published in Advanced Materials.
• 19 Sep 2024
  We warmly welcome postdoctoral researcher Dr. Changyu Zhou from Shenzhen University.
• 29 Aug 2024
  We warmly welcome postdoctoral researcher Dr. Huiqi Li from Shandong University.
• 21 Aug 2024
  We warmly welcome postdoctoral researcher Dr. Peng Lei from Peking University.
• 16 Aug 2024
  Fan Ye successfully defends her Ph.D. thesis.
• 2 Aug 2024
  Our paper on symmetry-protected bound states in the continuum on an integrated photonic platform is published in Nanophotonics.
• 1 Aug 2024
  We warmly welcome postgraduate students Hechong Chen and Yuanzhe Sun from South China Normal University and Nanjing University of Posts and Telecommunications, respectively.
• 1 Aug 2024
  Prof. Sun is promoted to Professor.
• 27 Jun 2024
  Prof. Sun receives RGC GRF funding and CUHK Direct Grant for Research.
• 23 Apr 2024
  Prof. Daoxin Dai from Zhejiang University visits us and gives an invited talk titled "Multimode silicon photonics."
• 2 Apr 2024
  Our paper on surface acoustic microwave photonic filters on etchless lithium niobate integrated platform is published in Laser & Photonics Reviews.
• 4 Mar 2024
  Our work on Dirac-vortex topological lasers is featured by Light: Science & Applications. See News & Views: "Topological Dirac-vortex microcavity laser for robust on-chip optoelectronics" by Yuanpeng Wu and Zetian Mi.

2023

• 12 Dec 2023
  Prof. Xiao-Song Ma from Nanjing University visits us and gives an invited talk titled "Quantum storage of entangled photons at telecom wavelengths in a crystal."
• 23 Nov 2023
  Our work on Dirac-vortex topological lasers is featured by Laser Focus World.
• 15 Nov 2023
  Prof. Carsten Schuck from University of Munster visits us and gives an invited talk titled "Integrating single-photon sources, circuits and detectors on quantum photonic chips."
• 10 Nov 2023
  Prof. Sun receives funding from NSFC/RGC Joint Research Scheme.
• 24 Oct 2023
  Our paper on room-temperature continuous-wave topological Dirac-vortex microcavity lasers on silicon is published in Light: Science & Applications.
• 10 Oct 2023
  Our invited tutorial on etchless photonic integrated circuits enabled by bound states in the continuum is published in Journal of the Optical Society of America B.
• 3 Aug 2023
  Prof. Jian-Hua Jiang from University of Science and Technology of China visits us and gives an invited talk titled "Unveiling topological phenomena at defects using metamaterials."
• 1 Aug 2023
  We warmly welcome postgraduate students Li Zeng from Nanjing University of Posts and Telecommunications. We warmly welcome visiting scholar Prof. Qijing Lu from Fujian Normal University.
• 26 Jul 2023
  Prof. Sun is selected for the CUHK Young Researcher Award 2022.
• 19 Jul 2023
  Yuan Li successfully defends his Ph.D. thesis.
• 11 Jul 2023
  Prof. Sun is selected for the fellowship award under the RGC Research Fellow Scheme 2023/24.
• 27 Jun 2023
  Our paper on gigahertz phononic integrated circuits based on overlay slot waveguides is published in Physical Review Applied.
• 20 Jun 2023
  Prof. Jiawei Wang from Harbin Institute of Technology (Shenzhen) visits us and gives an invited talk titled "3D whispering gallery mode optical microcavities: from new physics to emerging applications."
• 20 Jun 2023
  Ziyao Feng successfully defends his Ph.D. thesis.
• 12 Jun 2023
  Yue Yu successfully defends her Ph.D. thesis.
• 15 May 2023
  Our paper on experimental observation of dissipatively coupled bound states in the continuum on an integrated photonic platform is published in Laser & Photonics Reviews.
• 17 Apr 2023
  Prof. Boon S. Ooi and his team from King Abdullah University of Science and Technology visit us and give invited talks.
• 21 Feb 2023
  Yue Yu receives the 2022 EE Department's Postgraduate Student Research Excellence Award and the Best Presentation Award.
• 20 Feb 2023
  Prof. Jian Wang and his team from Huazhong University of Science and Technology visit us and introduce their research.
• 25 Jan 2023
  Our review article on 2D-materials-integrated optoelectromechanics is published in Reports on Progress in Physics.
• 19 Jan 2023
  Our paper on inverse-designed linear coherent photonic networks for high-resolution spectral reconstruction is published in ACS Photonics and featured as a cover article.

2022

• 28 Dec 2022
  Our paper on dynamically encircling an exceptional point in an anti-PT-symmetric integrated photonic system is published in Physical Review Letters.
• 20 Nov 2022
  Our paper on realization of bound states in the continuum in anti-PT-symmetric optical systems is published in Laser & Photonics Reviews.
• 18 Nov 2022
  Our paper on observation of mechanical bound states in the continuum in an optomechanical microresonator is published in Light: Science & Applications.
• 31 Oct 2022
  Our paper on highly tunable broadband coherent wavelength conversion with a fiber-based optomechanical system is published in Advanced Photonics and featured as a cover article.
• 26 Sep 2022
  Our paper on wavelength-division multiplexing on an etchless lithium niobate integrated platform is published in ACS Photonics.
• 1 Sep 2022
  Prof. Sun starts to serve Optica as an Associate Editor.
• 26 Aug 2022
  Our group alumnus Dr. Jingwen Ma receives the CUHK Postgraduate Research Output Award 2021.
• 1 Aug 2022
  We warmly welcome postgraduate student Jianfeng He from South China Normal University.
• 8 Jul 2022
  Our paper on Hofstadter butterfly and topological edge states in a quasiperiodic photonic crystal cavity array is published in Optics Express.
• 15 Jun 2022
  Our group alumnus Dr. Jingwen Ma receives the Faculty Outstanding PhD Thesis Award 2021.
• 16 Feb 2022
  Our group alumnus Jiawei Zhang secures an offer from Princeton University for postgraduate studies.
• 21 Jan 2022
  Prof. Sun receives funding for research collaboration from Office of Academic Links, CUHK.
• 18 Jan 2022
  Our paper on second-harmonic generation in etchless lithium niobate nanophotonic waveguides with bound states in the continuum is published in Laser & Photonics Reviews.
• 12 Jan 2022
  Our paper on anisotropic Dirac cone and slow edge states in a photonic Floquet lattice is published in Physical Review B.
• 4 Jan 2022
  Prof. Sun receives RGC CRF funding as a Project Coordinator.

2021

• 18 Dec 2021
  Yue Yu receives the Best Paper Award (First Runner Up) at the 21st IEEE Photonics Society (Hong Kong Chapter) Postgraduate Conference 2021.
• 3 Dec 2021
  Prof. Sun starts to serve Journal of Lightwave Technology as an Associate Editor.
• 4 Nov 2021
  Our paper on experimental investigation of the angular symmetry of optical force in a solid dielectric is published in Optica.
• 24 Sep 2021
  Our paper on demonstration of on-chip gigahertz acousto-optic modulation at near-visible wavelengths is published in Nanophotonics.
• 24 Aug 2021
  Jingwen Ma successfully defends his Ph.D. thesis.
• 20 Aug 2021
  Our paper on ultralow-loss etchless lithium niobate integrated photonics at near-visible wavelengths is published in Advanced Optical Materials.
• 4 Aug 2021
  We warmly welcome research assistant Jiawei Zhang from Nankai University.
• 1 Aug 2021
  Prof. Sun is appointed as Associate Director, Center of Optical Sciences.
• 30 Jun 2021
  Prof. Sun receives RGC GRF funding.
• 4 May 2021
  Xiang Xi successfully defends his Ph.D. thesis.
• 19 Apr 2021
  Our paper on nanomechanical topological insulators with an auxiliary orbital degree of freedom is published in Nature Nanotechnology. It is featured in News & Views: "Topological vortices for sound and light" by Penglin Gao and Johan Christensen.
• 26 Feb 2021
  Our paper on gigahertz acousto-optic modulation and frequency shifting on etchless lithium niobate integrated platform is published in ACS Photonics.
• 4 Feb 2021
  Our paper on experimental demonstration of dual-band nanoelectromechanical valley-Hall topological metamaterials is published in Advanced Materials.
• 6 Jan 2021
  Our paper on observation of chiral edge states in gapped nanomechanical graphene is published in Science Advances.

2020

• 6 Nov 2020
  Our paper on inverse-designed photonic jumpers with ultracompact size and ultralow loss is published in Journal of Lightwave Technology.
• 4 Nov 2020
  Our paper on nonmetallic broadband visible-light absorbers with polarization and incident angle insensitivity is published in IEEE Photonics Journal.
• 1 Sep 2020
  Our group alumnus Dr. Zejie Yu starts his new position as a Professor in College of Optical Science and Engineering at Zhejiang University.
• 1 Aug 2020
  Prof. Sun is promoted to Associate Professor with tenure.
• 29 May 2020
  Our paper on giant enhancement of rotation sensing with PT-symmetric circular Bragg lasers is published in Physical Review Applied.
• 25 May 2020
  Our paper on high-dimensional communication with photonic bound states in the continuum is published in Nature Communications.
• 29 Apr 2020
  Our paper on graphene-assisted electro-optomechanical integration on a silicon-on-insulator platform is published in Optics Express.
• 1 Jan 2020
  Our paper on acousto-optic modulation of photonic bound state in the continuum is published in Light: Science & Applications. See media release by Phys.org and EurekAlert!.

2019

• 4 Dec 2019
  Our invited paper on optically controlled topologically protected acoustic wave amplification is published in IEEE Journal of Selected Topics in Quantum Electronics.
• 21 Nov 2019
  Our paper on giant enhancement of nonlinear optical processes with split-ring resonators is published in IEEE Photonics Technology Letters.
• 1 Nov 2019
  Prof. Joyce Poon from University of Toronto visits us and gives an invited talk titled "Light, communications, and computing."
• 31 Oct 2019
  Our paper on topological photonic integrated circuits based on valley kink states is published in Laser & Photonics Reviews and featured as a cover article.
• 23 Oct 2019
  Our paper on hybrid 2D-material photonics with bound states in the continuum is published in Advanced Optical Materials.
• 10 Oct 2019
  Our paper on photonic integrated circuits with bound states in the continuum is published in Optica.
• 5 Aug 2019
  Zejie Yu successfully defends his Ph.D. thesis.
• 1 Aug 2019
  We warmly welcome postgraduate student Long Jin from Huazhong University of Science and Technology.
• 28 Jun 2019
  Prof. Sun receives RGC GRF funding.
• 23 May 2019
  Our paper on carrier-mediated cavity optomechanics in a semiconductor laser is published in Physical Review A.
• 11 Apr 2019
  Our group alumnus Aosong Feng secures an offer from Yale University for postgraduate studies.
• 1 Feb 2019
  We warmly welcome visiting scholar Prof. Mingzeng Peng from University of Science and Technology Beijing.

2018

• 19 Dec 2018
  Our paper on inverse-designed polarization-insensitive silicon waveguide crossing is published in Optics Letters and selected as an Editor's Pick.
• 18 Dec 2018
  Prof. Linran Fan from University of Arizona visits us and gives an invited talk titled "Quantum photon conversion with integrated nonlinear photonics."
• 15 Oct 2018
  Our paper on ultranarrow-band metagrating absorbers is published in Optics Express.
• 29 Sep 2018
  Our paper on photonic welding points is published in Nanophotonics.
• 15 Aug 2018
  Our paper on proposing parity-time-symmetric mechanical systems by the cavity optomechanical effect is published in Optics Letters.
• 1 Aug 2018
  Prof. Qiaoqiang Gan from University at Buffalo visits us and gives an invited talk titled "Extreme light-matter interaction."
• 1 Aug 2018
  We warmly welcome postgraduate student Fan Ye from Nanjing University.
• 27 Jul 2018
  Prof. Ya Sha Yi from University of Michigan visits us and gives an invited talk titled "Integrated subwavelength all-dielectric gratings/metasurfaces."
• 29 Jun 2018
  Prof. Sun receives RGC GRF funding.
• 12 Jun 2018
  Prof. Sun starts to serve Scientific Reports as an Editorial Board Member.
• 10 Apr 2018
  Our paper on circular Bragg lasers with radial PT symmetry is published in Photonics Research.
• 31 Jan 2018
  Prof. Sun presents an invited talk titled "Recent progress in nano-optomechanical devices at microwave frequencies" at SPIE Photonics West in San Francisco, California, USA.
• 17 Jan 2018
  Prof. Qiang Lin from University of Rochester visits us and gives an invited talk titled "Nonlinear micro-/nano-photonic devices and applications."
• 12 Jan 2018
  Our paper on giant enhancement of stimulated Brillouin scattering with phoxonic crystal waveguides is published in Optics Express.

2017

• 5 Oct 2017
  Our paper on a proposal and experimental demonstration of on-chip reflectors with the smallest footprint on a thin-film-on-insulator platform is published in Photonics Research.
• 5 Aug 2017
  Our paper on experimental realization of a wideband on-chip polarization rotator with an ultrasmall footprint is published in Optics Letters.
• 1 Aug 2017
  Yue Yu and Ziyao Feng start their new status as postgraduate students in our group.
• 30 Jun 2017
  Prof. Sun receives RGC GRF funding.

2016

• 8 Dec 2016
  We warmly welcome research assistant Ziyao Feng from Huazhong University of Science and Technology.
• 5 Dec 2016
  We warmly welcome research assistant Dong Xiao from Shenzhen University.
• 1 Dec 2016
  Our work "Hybrid Graphene/Silicon Integrated Optical Isolators" is selected by Optics & Photonics News (OPN), The Optical Society's monthly news magazine, as one of the world's 30 most clearly communicated breakthroughs in optics in 2016.
• 29 Nov 2016
  We warmly welcome research assistant Yue Yu from Huazhong University of Science and Technology.
• 28 Nov 2016
  We publish two papers in Scientific Reports: one on designing ultraviolet optomechanical crystal cavities and the other on proposing parity-time-symmetric circular Bragg lasers.
• 17 Aug 2016
  Prof. Sun starts to serve Optics Express as an Associate Editor.
• 4 Aug 2016
  Prof. Lai Wang from Tsinghua University visits us and gives a talk.
• 1 Aug 2016
  Jingwen Ma and Yuan Li start their new status as postgraduate students in our group.
• 19 Apr 2016
  Our paper on a proposal of hybrid graphene/silicon integrated optical isolator published in Applied Physics Letters is featured as a cover article and selected as an Editor's Pick.
• 24-25 Feb 2016
  Chinese Academy of Sciences Academician Prof. Shining Zhu from Nanjing University visits us and gives an invited talk titled "On-chip photonics and optoelectronics."

2015

• 28 Dec 2015
  Prof. Hong Tang from Yale visits us and gives an invited talk titled "Hybrid silicon photonic circuits for chip-scale nonlinear and quantum optics."
• 16 Dec 2015
  We warmly welcome research assistant Yuan Li from Southeast University.
• 19 Nov 2015
  Prof. Kerry Vahala from Caltech visits us and gives an invited talk titled "Soliton frequency microcombs."
• 30 Oct 2015
  Prof. Sun receives funding from NSFC/RGC Joint Research Scheme.
• 15 Oct 2015
  Prof. Sun receives the RGC Early Career Award 2015/16. See the news coverage by Faculty of Engineering and Department of Electronic Engineering, CUHK.
• 15 Oct 2015
  We warmly welcome research assistant Jiahua Gu from South China Normal University.
• 25 Aug 2015
  We warmly welcome research assistant Jingwen Ma from Huazhong University of Science and Technology.
• 1 Aug 2015
  We warmly welcome postgraduate students Xiang Xi and Zejie Yu from Huazhong University of Science and Technology and Zhejiang University, respectively.
• 30 Jun 2015
  Prof. Sun receives RGC ECS funding.
• 31 Mar 2015
  Prof. Sun receives funding from Shun Hing Institute of Advanced Engineering, CUHK.

2014

• 27 Nov 2014
  Prof. Sun receives CUHK Direct Grant for Research.