1 广东轻工职业技术学院, 信息技术学院 广东 广州 510300
2 华南师范大学, 广东省微纳光子功能材料与器件重点实验室 信息光电子科技学院 广东 广州 510006
3 华南师范大学 广东省量子调控工程与材料重点实验室 广东 广州 510006
4 广东理工学院, 大学物理实验中心 广东 肇庆 526100
腔光力学研究光子与宏观机械振子的相互作用, 目前已成为研究量子世界与经典世界之间的过渡以及研究非经典和非线性效应的重要领域。本文首先介绍该领域中的基本物理概念, 包括辐射压力、光机械哈密顿量、海森堡-朗之万方程、方程的线性化等。然后综述近年来一些新奇光力学效应的发现和研究进展, 包括光力诱导透明、非互易光传播、高阶边带产生、光机械纠缠等。最后提出了一些研究展望。
腔光力学 光机械系统 量子效应 非线性效应 cavity optomechanics optomechanical systems quantum effects nonlinear effects 量子光学学报
2023, 29(1): 010001
东北石油大学物理与电子工程学院,黑龙江 大庆 163318
从理论上研究了由一个单腔光力系统和一个辅助腔组成的耦合腔系统中光力诱导放大和慢光效应的特性。结果表明,如果采用高品质的辅助腔(具有很小的衰减速率),系统中探测场的强度可以得到显著放大。结果还发现,基于完美的光力诱导透明特性,该模型中的时间延迟很容易超过单腔光力系统中的时间延迟上限。此外,还研究了该系统中完美光力诱导吸收的有趣现象。该研究结果可以应用于现代光网络中的光传输。
量子光学 腔光力学 光力诱导放大 慢光 光力诱导吸收 激光与光电子学进展
2023, 60(19): 1927001
Author Affiliations
Abstract
1 State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3 Beijing Academy of Quantum Information Sciences, Beijing 100193, China
4 Joint Laboratory of Advanced Semiconductor, Nanjing Guoke Semiconductor CO., Ltd, Nanjing 210000, China
Interaction between photons and phonons in cavity optomechanical systems provides a new toolbox for quantum information technologies. A GaAs/AlAs pillar multi-optical mode microcavity optomechanical structure can obtain phonons with ultra-high frequency (~THz). However, the optical field cannot be effectively restricted when the diameter of the GaAs/AlAs pillar microcavity decreases below the diffraction limit of light. Here, we design a system that combines Ag nanocavity with GaAs/AlAs phononic superlattices, where phonons with the frequency of 4.2 THz can be confined in a pillar with ~4 nm diameter. The Qc/V reaches 0.22 nm?3, which is ~80 times that of the photonic crystal (PhC) nanobeam and ~100 times that of the hybrid point-defect PhC bowtie plasmonic nanocavity, where Qc is optical quality factor and V is mode volume. The optomechanical single-photon coupling strength can reach 12 MHz, which is an order of magnitude larger than that of the PhC nanobeam. In addition, the mechanical zero-point fluctuation amplitude is 85 fm and the efficient mass is 0.27 zg, which is much smaller than the PhC nanobeam. The phononic superlattice-Ag nanocavity optomechanical devices hold great potential for applications in the field of integrated quantum optomechanics, quantum information, and terahertz-light transducer.
Optomechanics phononic crystal Ag plasmonic nanocavity confinement coupling Journal of Semiconductors
2023, 44(8): 082901
红外与激光工程
2023, 52(7): 20230338
1 国防科技大学 前沿交叉学科学院,湖南 长沙 410073
2 国防科技大学 南湖之光实验室,湖南 长沙 410073
悬浮光力传感技术利用真空环境的光阱实现对微纳尺度机械振子的悬浮和囚禁,将待测物理量转换为光悬浮机械振子运动参数的变化,理论上该振子与外部环境热噪声和振动完全隔绝,具有极高的测量分辨率潜力和易于小型化的独特优势。该技术在精密测量、微观热力学研究、暗物质观测、宏观量子态操控等领域具有广阔的应用前景。首先,阐述了悬浮光力系统中光力与光阱的基础概念和力学测量等基本理论;其次,介绍了其中初始起支、光力增强、位移测量、输出信号标定和等效反馈冷却等关键技术的研究进展,对比分析各子技术的特点,随后列举了悬浮光力传感技术在极弱力、加速度、微观质量、电学量、力矩等物理量测量中的典型应用;最后,总结了该技术的发展趋势,并提出相关建议。
悬浮光力学 量子传感 光阱 精密测量 levitated optomechanics quantum sensing optical tweezers precision measurements 红外与激光工程
2023, 52(6): 20230193
Author Affiliations
Abstract
University of Bordeaux, CNRS, Laboratoire Ondes et Matière d’Aquitaine, Talence, France
The optical angular momentum is ubiquitous to the science of light, especially whenever the polarization state and the spatial distribution of the phase are involved, which are most often associated with the spin and orbital parts of the total angular momentum, respectively. Notably, the independent introduction of these two contributions to the total optical angular momentum was accompanied by suggestions regarding the possible detection of their mechanical effects using a torsion pendulum. Today, the classical and quantum mechanical aspects of spin and orbital angular momentum of light and their mutual coupling remain active research topics offering exciting perspectives for photonic technologies. Our brief historical overview shows how the torsion pendulum has accompanied scientific advances on mechanical effects based on the angular degrees of freedom of light since Beth’s pioneering contribution published in 1935.
light polarization optical angular momentum optomechanics Advanced Photonics
2023, 5(3): 034003
Author Affiliations
Abstract
1 The Chinese University of Hong Kong, Department of Electronic Engineering, Shatin, Hong Kong SAR, China
2 University of Science and Technology of China, CAS Key Laboratory of Quantum Information, Hefei, China
3 University of Science and Technology of China, CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei, China
Modern information networks are built on hybrid systems working at disparate optical wavelengths. Coherent interconnects for converting photons between different wavelengths are highly desired. Although coherent interconnects have conventionally been realized with nonlinear optical effects, those systems require demanding experimental conditions, such as phase matching and/or cavity enhancement, which not only bring difficulties in experimental implementation but also set a narrow tuning bandwidth (typically in the MHz to GHz range as determined by the cavity linewidth). Here, we propose and experimentally demonstrate coherent information transfer between two orthogonally propagating light beams of disparate wavelengths in a fiber-based optomechanical system, which does not require phase matching or cavity enhancement of the pump beam. The coherent process is demonstrated by interference phenomena similar to optomechanically induced transparency and absorption. Our scheme not only significantly simplifies the experimental implementation of coherent wavelength conversion but also extends the tuning bandwidth to that of an optical fiber (tens of THz), which will enable a broad range of coherent-optics-based applications, such as optical sensing, spectroscopy, and communication.
cavity optomechanics coherent wavelength conversion optomechanically induced transparency Advanced Photonics
2022, 4(5): 056003
1 山西大学光电研究所量子光学与光量子器件国家重点实验室,山西 太原 030006
2 山西大学极端光学协同创新中心,山西 太原 030006
基于氮化硅薄膜和法布里-珀罗腔的光力系统在量子物理及精密测量等领域具有重要的应用价值。氮化硅薄膜机械振子共振频率的实时可调对于控制薄膜与光场的相互作用非常重要。提出并实验验证了利用高频非共振激励调控薄膜振子共振频率的方法。通过建立高频非共振激励下薄膜振子频率响应模型,搭建光纤干涉仪实时监测薄膜振子的运动情况,发现通过调节激励电压幅度可以有效地调控薄膜振子的共振频率,同等激励强度下基模共振频率的漂移量比高阶模大。同时利用该方法对薄膜振子的共振频率进行了稳频,使其漂移率为未加激励时的1/200。该方法为薄膜振子的频率稳定、研究机械模式间线性和非线性耦合以及多模腔光力相互作用等打下了技术基础。
量子光学 光力学 氮化硅薄膜 高频激励 频率响应 光学学报
2022, 42(13): 1327001
低维量子结构与调控教育部重点实验室, 物质微结构与功能湖南省重点实验室, 物理系和量子效应及其应用协同创新中心, 湖南师范大学, 湖南 长沙 410081
混合腔光力系统同时包含一次和二次光力相互作用。本文研究了混合腔光力系统中的双光子散射问题。在Wigner-Weisskopf框架下,通过求解散射过程,获得了混合腔光力系统散射态的解析表达式,揭示了双光子散射的4个物理过程:1)双光子均被直接反射,不进入腔中;2)一个光子被直接反射,另一个光子入射进腔中;3)两个光子按次序先后入射进腔中,但腔中最多只有一个光子;4)两个光子均入射进腔中。通过分析双光子散射谱,发现在该散射过程中可以产生双光子频率反关联,并且发现了混合腔光力系统中的参数与双光子散射谱特性之间的联系。该研究不仅提供了一种产生关联光子对的散射方法,而且提出了一种表征光力系统参数的光谱方法。
量子光学 腔光力学 混合腔光力系统 光子散射 关联光子对
Author Affiliations
Abstract
1 ELI-Beamlines Center, Institute of Physics, Czech Academy of Sciences, Dolní Břežany, Czech Republic
2 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
3 Centre Lasers Intenses et Applications, University of Bordeaux - CNRS - CEA, Talence, France
4 School of Science, Xi’an Jiaotong University, Xi’an, China
The design and the early commissioning of the ELI-Beamlines laser facility’s 30 J, 30 fs, 10 Hz HAPLS (High-repetition-rate Advanced Petawatt Laser System) beam transport (BT) system to the P3 target chamber are described in detail. It is the world’s first and with 54 m length, the longest distance high average power petawatt (PW) BT system ever built. It connects the HAPLS pulse compressor via the injector periscope with the 4.5 m diameter P3 target chamber of the plasma physics group in hall E3. It is the largest target chamber of the facility and was connected first to the BT system. The major engineering challenges are the required high vibration stability mirror support structures, the high pointing stability optomechanics as well as the required levels for chemical and particle cleanliness of the vacuum vessels to preserve the high laser damage threshold of the dielectrically coated high-power mirrors. A first commissioning experiment at low pulse energy shows the full functionality of the BT system to P3 and the novel experimental infrastructure.
beam transport system cleanliness high-power laser laser commissioning laser–plasma experiment optomechanics stability X-ray user facility High Power Laser Science and Engineering
2021, 9(2): 02000e30