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时间晶体首次与外部系统稳定耦合
Ke Ji Ri Bao· 2025-10-20 23:43
团队表示,时间晶体可作为量子计算机记忆核心,提高稳定性和运算效率。同时,它们还可用作高灵敏 度测量仪器的频率参考源,为未来量子传感和计算提供新工具。 (文章来源:科技日报) 在实验中,团队使用无线电波将磁振子注入接近绝对零度的氦-3超流体中。磁振子是一种由多粒子集体 表现出的"准粒子"。当无线电波泵浦停止后,磁振子自发形成时间晶体,并以此前未见的稳定性持续运 动,最长可维持108个周期,约数分钟,随后逐渐衰减至不可观测。 在衰减过程中,时间晶体与邻近的机械振荡器发生了耦合,其相互作用由振荡器的频率和振幅决定。研 究显示,这一过程与物理学中广泛应用的光机械效应完全类似。这类效应正是美国激光干涉引力波天文 台用于探测引力波的关键原理。通过降低能量损耗并提高振荡器频率,他们的系统有望逼近量子极限。 芬兰阿尔托大学应用物理系研究团队首次将时间晶体与外部系统稳定耦合,使其成为一种光机械系统。 这一成果为开发超高精度传感器和量子计算机记忆单元提供了新思路。相关论文发表于新一期《自然· 通讯》杂志。 晶体因其高度规则的原子结构而呈现出彩虹般的光泽。2012年诺贝尔物理学奖得主弗兰克·维尔切克提 出,量子系统能以同样的方式自 ...
新材料的时空奇遇:从火种到星尘的文明故事
材料汇· 2025-07-18 15:50
Core Viewpoint - The article explores the evolution of materials throughout human history, highlighting their significance in shaping civilization and technological advancements. Group 1: Ancient and Early Materials - The discovery of tools made from volcanic rock by early humans marks the beginning of material use in civilization [3] - Flint was used as a tool for cutting and creating fire, showcasing early human ingenuity in material manipulation [6] - The invention of pottery allowed for food storage and contributed to the development of early urban civilizations [7] - Jade, particularly in ancient cultures, symbolized power and status, reflecting the societal hierarchy based on material rarity and craftsmanship [8][9] Group 2: Industrial Revolution - The Bessemer process revolutionized steel production, significantly reducing the time required to produce steel and increasing its availability for infrastructure [12] - The invention of celluloid provided a sustainable alternative to ivory for billiard balls, leading to broader applications in film and photography [13] Group 3: Electrical and Information Revolution - The development of tungsten filaments in light bulbs greatly improved their longevity and efficiency, making electric lighting accessible to households [16] - The invention of silicon chips laid the foundation for modern computing, enabling the integration of billions of transistors on a single chip [17] - Optical fibers transformed communication by allowing high-speed data transmission over long distances, significantly enhancing global connectivity [18][19] Group 4: AI and Future Materials - Graphene, discovered in 2004, exhibits extraordinary strength and conductivity, paving the way for innovations in electronics and energy storage [25] - Shape memory alloys, such as nickel-titanium, have applications in medical devices and robotics due to their ability to return to a predetermined shape [26] - AI-driven material design is revolutionizing the development of new materials, enabling rapid identification of high-performance candidates for various applications [27][28] Group 5: Speculative Future Materials - Bio-steel, derived from genetically modified organisms, promises lightweight and strong materials for protective gear [32] - Time crystals, which maintain a stable oscillation state, could lead to advancements in precision timekeeping and quantum computing [34] - Dark matter composites may enable anti-gravity technologies, revolutionizing transportation and space exploration [35] Group 6: Conclusion - The article emphasizes the continuous evolution of materials as a reflection of human creativity and technological progress, suggesting that future innovations will further transform society [46]
新材料投资:全球30大前沿新材料介绍及未来发展趋势解析(9762字)
材料汇· 2025-07-13 15:22
Core Viewpoint - The article discusses the development and potential impact of 30 cutting-edge materials, emphasizing their strategic importance for future technological advancements and applications in various industries [3]. Group 1: Overview of Cutting-edge Materials - Cutting-edge materials include boron graphene, transition metal sulfides, 4D printing materials, and biomimetic plastics, which are crucial for China's strategic development [3]. - The article lists 30 of the most promising advanced materials and their potential impacts on future life [3]. Group 2: Individual Material Summaries - **Holographic Film**: A revolutionary projection film that allows 360° viewing and interaction, predicted to see increased research focus [6][8]. - **Metallic Hydrogen**: A high-density, high-energy material with potential applications in superconductivity and space exploration, capable of revolutionizing energy solutions [12][16]. - **Supersolid**: A state of matter that combines properties of solids and superfluids, with potential applications in superconducting magnets and sensors [18][21]. - **Wood Sponge**: A chemically treated material that can absorb oil up to 46 times its weight, offering a green solution for cleaning oil spills [24][25]. - **Time Crystals**: A new state of matter with periodic structures in time, recognized for its potential in quantum computing [28][35]. - **Quantum Stealth Material**: A camouflage fabric that bends light to achieve invisibility, with military applications [41][42]. - **Never-dry Material**: A polymer-water composite that remains conductive and could be used for artificial skin [45][46]. - **Transition Metal Dichalcogenides (TMDC)**: A semiconductor material with potential in optoelectronics, offering low-cost and stable thin layers [54][56]. - **Cold Boiling Material**: A material that exhibits solid, liquid, and gas states at varying temperatures, with applications in aerospace [59][62]. - **Magnetic Fluid Material**: A stable colloidal liquid with magnetic properties, applicable in various fields including aerospace and medical devices [65][66]. - **Rock-like Coating Material**: A cost-effective coating for industrial tools that enhances durability and lifespan [69][70]. - **Nano-point Perovskite**: A promising material for solar cells, improving efficiency and stability [73][75]. - **Micro Metal**: A lightweight yet strong material that could significantly reduce spacecraft weight [78][79]. - **Tinene**: A new two-dimensional material with superior conductivity, showing promise for various applications [82][83]. - **Molecular Superglue**: A high-strength adhesive with potential in medical diagnostics and material bonding [85][86]. - **Metamaterials**: Engineered materials with unique properties, expected to have significant future applications [89][91]. - **Quantum Metal**: A unique material with superconducting properties, valuable for electronics and energy transmission [94][95]. - **Boron Graphene**: A new two-dimensional material with excellent electronic properties, anticipated to have a broad market potential [97][98]. - **Programmable Cement**: A high-performance cement with enhanced properties, aimed at sustainable construction [100][101]. - **Ultra-thin Platinum**: A cost-effective method for producing platinum layers, with applications in fuel cells [103][104]. - **Platinum Alloys**: Versatile materials used in various high-temperature and catalytic applications [107][112]. - **Self-healing Materials**: Materials that can autonomously repair damage, promising for various industries [115][117]. - **Sun-blocking Glass Coating**: A smart coating that adjusts transparency based on temperature, with applications in construction [120]. - **Biomimetic Plastics**: Materials that mimic biological properties, expected to play a key role in infrastructure development [123][125]. - **Photon Crystals**: Optical materials with potential applications in advanced optics and photonics [127][130]. - **Ablation-resistant Ceramics**: High-temperature materials suitable for aerospace applications [133][136]. - **Cooling Wall Materials**: Innovative materials that can regulate temperature, potentially replacing air conditioning [139][140]. - **Infinite Recyclable Plastics**: Sustainable materials that can be recycled indefinitely, addressing environmental concerns [142][143]. - **4D Printing Materials**: Smart materials that can change shape based on environmental stimuli, with applications in fashion and design [145][146]. - **Wrinkle-eliminating Materials**: Polymers that can tighten skin, showing promise in skincare and medical treatments [149][150].