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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· 2025-09-22 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].