Hybrid Integration of Quantum Dot Single Photon Sources with Lithium Tantalate Photonics for On Chip Routing
National University of Defense Technology（国防科技大学）；Zhejiang University（浙江大学）；Harbin Institute of Technology (Shenzhen)（哈尔滨工业大学（深圳））；Sun Yat-sen University（中山大学）
Kaili Xiong, Defeng Shan, Xueshi Li, Ziliang Ruan, Bin Chen, Zhanling Wang, Jiawei Wang, Ying Yu, Wei Wu, Pingxing Chen, Jin Liu, Liu Liu, Yan Chen, Tian Jiang
A promising pathway towards scalable quantum photonic processors involves the simultaneous integration of deterministic single-photon sources, low-loss photonic circuitry, and fast reconfigurability. Thin-film lithium tantalate on insulator (LTOI) offers an exceptional electro-optic response and low optical loss at 900 nm wavelength band, yet its lack of efficient quantum emitters has hindered progress toward fully integrated quantum technologies. Here, we demonstrate heterogeneous integration of indium arsenide quantum dots (QDs) with low-loss reconfigurable LTOI waveguides using micro-transfer printing. By directly butt-coupling tapered gallium arsenide waveguides with inversely tapered LTOI waveguides, we achieve robust and alignment-tolerant inter-waveguide coupling. The hybrid chip operates at cryogenic temperatures, enabling deterministic routing of successively emitted single photons from the QDs with a halfwave voltage-length product, confirming the cryogenic stability of LTOI's electro-optic coefficient. These results establish the first demonstration of high-speed on-chip routing of single photons with hybrid QD-LTOI circuits, providing a scalable pathway toward integrated quantum photonic processors.
Low voltage and high-bandwidth thin-film lithium tantalate modulator on a silicon dioxide substrate
Institute of Physics, Swiss Federal Institute of Technology, Lausanne (EPFL)（洛桑联邦理工学院物理研究所）；Institute of Electrical and Micro Engineering (IEM), EPFL（洛桑联邦理工学院电气与微工程研究所）；Institute of Photonics and Quantum Electronics (IPQ), Karlsruhe Institute of Technology (KIT)（卡尔斯鲁厄理工学院光子与量子电子学研究所）
Broadband suspended lithium tantalate Mach-Zehnder modulator achieving a 460 Gbit/s net data rate
Institute of Physics, Swiss Federal Institute of Technology, Lausanne (EPFL)（洛桑联邦理工学院物理研究所）；Institute of Electrical and Micro Engineering (IEM), EPFL（洛桑联邦理工学院电气与微工程学院）；Institute of Photonics and Quantum Electronics (IPQ), Karlsruhe Institute of Technology (KIT)（卡尔斯鲁厄理工学院光子与量子电子研究所）
Sub-kHz linewidth integrated extended-DBR Pockels lasers using lithium tantalate
Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL)（洛桑联邦理工学院物理研究所）；Deeplight SA（Deeplight公司）；State Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences（中国科学院上海微系统与信息技术研究所集成电路材料重点实验室）；Institute of Electrical and Micro engineering, Swiss Federal Institute of Technology, Lausanne (EPFL)（洛桑联邦理工学院电气与微电子工程研究所）
High-Efficiency Acousto-Optic Modulation on Non-Suspended Thin-Film Lithium Tantalate
University of Science and Technology of China（中国科学技术大学）；Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences（中国科学院上海微系统信息技术研究所）；University of Chinese Academy of Sciences（中国科学院大学）
Robust and Active Visible-Light Integrated Photonics on Thin-Film Lithium Tantalate for Underwater Optical Wireless Communications
National Center for International Research on Green Optoelectronics, South China Normal University（华南师范大学绿色光电子国际联合研究中心）；Jiaxing Research Institute, Zhejiang University（浙江大学嘉兴研究院）
Watt-level second harmonic generation in periodically poled thin-film lithium tantalate
Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL)（洛桑联邦理工学院物理研究所）；Center of Quantum Science and Engineering (EPFL)（洛桑联邦理工学院量子科学与工程中心）；Institute of Electrical and Micro Engineering (IEM), Swiss Federal Institute of Technology Lausanne (EPFL)（洛桑联邦理工学院电气与微工程研究所）
Toward scalable and bias-stable optical phased arrays on lithium tantalate
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University（中山大学电子与信息学院光电材料与技术国家重点实验室）；State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University（清华大学精密仪器系精密测量技术与仪器国家重点实验室）；State Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences（中国科学院上海微系统与信息技术研究所集成材料电路国家重点实验室）；Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences（中国科学院大学材料科学与工程中心）；University of Science and Technology of China（中国科学技术大学）
Leveraging Raman response in X-cut thin-film lithium tantalate for ultrabroadband combs and polychromatic visible light
State Key Lab of Photonics and Communications, Department of Electronic Engineering, Shanghai Jiao Tong University（上海交通大学电子工程系光子与通信国家重点实验室）；The Extreme Optoelectromechanics Laboratory (XXL), School of Physics, East China Normal University（华东师范大学物理学院极端光机电集成实验室）
Non-volatile integrated photonics on lithium tantalate-on-insulator
Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology（武汉光电国家实验室与华中科技大学光学与电子信息学院）；State Key Laboratory of Photonics and Communications, Department of Electronic Engineering, Shanghai Jiao Tong University（上海交通大学电子工程系光子与通信国家重点实验室）；School of Physics, Harbin Institute of Technology（哈尔滨工业大学物理学院）
First Thin-Film Lithium Tantalate Polarization Controller Enabling Reset-Free Mrad/s Tracking for Optical Interconnects
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology（华中科技大学武汉光电国家研究中心）；Hubei Optical Fundamental Research Centre（湖北省光电子基础研究中心）
Integrated photon-pair sources on periodically poled thin-film lithium tantalate
National University of Singapore（新加坡国立大学）；Centre for Quantum Technologies, National University of Singapore（新加坡国立大学量子技术中心）；A ∗ STAR Quantum Innovation Centre (Q.InC), Agency for Science, Technology and Research (A ∗ STAR)（新加坡科技研究局（A*STAR）量子创新中心）
18-dB on-chip vacuum squeezing in an adaptively poled lithium niobate waveguide
University of California, Berkeley（加州大学伯克利分校）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California（南加州大学明希电气与计算机工程系）；Research Laboratory of Electronics, MIT（麻省理工学院电子研究实验室）；Department of Electrical and Computer Engineering, University of Hawaii at Mānoa（夏威夷大学马诺阿分校电气与计算机工程系）
