量子挤压

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纳米级粒子“量子挤压”首次实现,有助高精度传感与自动驾驶技术发展
Ke Ji Ri Bao· 2025-09-23 08:52
Core Insights - The research team from the University of Tokyo has achieved "quantum squeezing" of nanoscale particles, reducing their motion uncertainty below the quantum mechanical zero-point fluctuations, which opens new pathways for fundamental physics research and advancements in high-precision technologies such as sensors, autonomous driving, and navigation without GPS signals [1][2]. Group 1 - The macro physical world follows classical mechanics, while the micro world adheres to quantum mechanics, characterized by inherent uncertainty in measurement precision due to quantum fluctuations [1]. - Quantum squeezing refers to the generation of quantum states with uncertainty smaller than zero-point fluctuations, crucial for understanding natural phenomena and developing next-generation technologies influenced by quantum effects [1][2]. Group 2 - The research team utilized glass-made nanoscale particles suspended in a vacuum and cooled to the lowest energy state to minimize uncertainty, achieving a narrower speed distribution than the minimum energy state under optimal release timing [2]. - The achievement of quantum squeezing was the result of overcoming numerous technical challenges over several years, including additional fluctuations from particle suspension and minor disturbances in the experimental environment [2]. - The suspended nanoscale particle system is highly sensitive to environmental changes, making it an ideal platform for studying the transition between quantum and classical mechanics, and laying the groundwork for the development of new quantum devices [2].
纳米级粒子“量子挤压”首次实现
Ke Ji Ri Bao· 2025-09-22 01:29
Core Insights - The research team from the University of Tokyo has achieved "quantum squeezing" of nanoparticles, reducing the uncertainty of particle motion below the zero-point fluctuations of quantum mechanics, which opens new pathways for fundamental physics research and advances technologies like high-precision sensing, autonomous driving, and navigation without GPS signals [1][2]. Group 1: Quantum Mechanics and Research Findings - The study demonstrates that quantum mechanics, which governs the micro-world, can be extended to the nanoscale, overcoming significant experimental challenges [1][2]. - The team utilized glass-made nanoparticles suspended in a vacuum and cooled to their lowest energy state to minimize uncertainty, successfully proving quantum squeezing by achieving a narrower speed distribution than the lowest energy state [2]. Group 2: Implications for Technology Development - This breakthrough provides a platform for addressing fundamental scientific challenges and developing revolutionary technologies, particularly in navigation systems that can enhance positioning accuracy and reliability without external signals [3]. - The advancements in precision measurement could significantly improve the sensitivity of atomic clocks, gravimeters, and magnetic field sensors, facilitating research in fundamental physical constants, dark matter, and early universe studies [3]. - The findings also hold potential applications in materials science and biomedicine, supporting the development of new sensors, single-molecule detection technologies, and targeted drug delivery systems [3].
纳米级粒子“量子挤压”首次实现 有助高精度传感与自动驾驶技术发展
Ke Ji Ri Bao· 2025-09-22 00:07
Core Insights - The research team from the University of Tokyo has achieved "quantum squeezing" of nanoscale particles, reducing their motion uncertainty below the quantum mechanical zero-point fluctuations, which opens new pathways for fundamental physics research and advances technologies like high-precision sensing, autonomous driving, and navigation without GPS signals [1][2]. Group 1 - The macroscopic physical world follows classical mechanics, while the microscopic world adheres to quantum mechanics, characterized by inherent uncertainty [1]. - Quantum squeezing refers to generating quantum states with uncertainty smaller than zero-point fluctuations, crucial for understanding natural phenomena and developing next-generation technologies influenced by quantum effects [1][2]. - The research team utilized glass-made nanoscale particles suspended in a vacuum and cooled to their lowest energy state to minimize uncertainty, successfully demonstrating quantum squeezing by achieving a narrower speed distribution than the lowest energy state [2]. Group 2 - The achievement of quantum squeezing was the result of overcoming numerous technical challenges over several years, including additional fluctuations from particle suspension and minor disturbances in the experimental environment [2]. - The suspended nanoscale particle system is highly sensitive to environmental changes, making it an ideal platform for studying the transition between quantum and classical mechanics, and laying the groundwork for the development of new quantum devices [2].