测量时间的热力学成本

发布时间：2018-03-08 11:36

  本文选题：测量时间　切入点：原子钟　出处：《物理》2017年10期 　论文类型：期刊论文

【摘要】：正精确测量时间之能力已对社会产生了巨大影响,从海洋航行计时器(在十八世纪推进航海),到星载原子钟(今天全球定位系统(GPS)之基础设备)。但是,物理学对我们测量时间的能力有什么基本的限制呢?在一篇新论文中,来自西班牙巴塞罗那Autonomous大学的Paul Erker和他的同事认为,在这样的限制中热力学起关键作用。考虑一个简单的量子钟模型,他们在准确性和分辨率两个特性之间建立了定量
[Abstract]:The ability to accurately measure time has had a huge impact on society, ranging from ocean navigational timers (in 18th century) to the basic equipment of spaceborne atomic clocks (today's Global Positioning system (GPS)). What are the basic limitations of physics on our ability to measure time? In a new paper, Paul Erker of the University of Autonomous in Barcelona, Spain, and his colleagues believe that thermodynamics plays a key role in such limitations. Consider a simple quantum clock model. They built a quantitative relationship between accuracy and resolution.
【作者单位】： 中国科学院理化技术研究所;
【分类号】：O414.1
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本文编号：1583734