纠缠光子的放大

• 出 处: 激光与光电子学进展
• 发表日期: 2002年07期

20世纪60年代发明了激光，在一腔内将传统意义上的光放大。新的实验表明，处于特定量子态的光子也能被放大。两粒子间的量子纠缠表示对其中之一的状态进行测量马上就能得到另一个的状态，即使两粒子物理上距离很远。Erwin Schro¨dinger曾将这种特殊的联系称作“量子力学的独有

In the 1960s, the laser was invented, amplifying the light in the traditional sense in a cavity. New experiments show that photons in a specific quantum state can also be amplified. Quantum entanglement between two particles means that measuring the state of one of them will immediately give you the state of the other, even if the two particles are physically far apart. Erwin Schro¨dinger called this particular connection “unique to quantum mechanics.”