传输带时钟同步的量子测量原理

The Quantum Measurement of the Conveyor-belt Clock Synchronization

时钟同步技术不管在民用生活中,还是在军事通信中都起着非常重要的作用。但是,现实中并不存在绝对同步的时钟,所以,测量两地时钟的同步性,是全世界国家所关心和研究的重要课题。在这样的背景下,提出一种传输带时钟同步的方法,此方法并不需要交换信号的传输时间;并基于脉冲纠缠双光子的量子相干性,给出了一种时钟同步的光学实验方案,此方案对介质色散具有很强的扼制效应。

The clock synchronization both in daily life, or in the military communications has a very important significance. But in fact, there is no absolute accurate clock, also there is no absolute synchronous clock. So, it is the national concern and research topic for the whole world to measure the synchronism of the two clock. In such background, a protocol for synchronizing distant clocks is proposed that does not rely on the arrival times of the sig nals which are exchanged. An optical implementation based on coherentstate pulses is described. This protocol is not limited by any dispersion.