Optical coherence: A convenient fiction
Optical coherence: A convenient fiction
复制标题
DOI：
10.1103/physreva.55.3195
复制
发表时间：
1997-04-01
影响因子：
2.9
通讯作者：
Molmer, K
中科院分区：
文献类型：
--
作者：
Molmer, K
我们推测光学相干性，即光学状态下由玻尔频率分隔的状态之间的量子力学相干性，在光学实验中不存在。我们声称光场振幅和原子偶极子期望值精确消失，并且我们讨论了在理论计算中为这些量分配有限值看似矛盾的成功。我们证明我们的猜想与观察到的不同光源之间的干涉并不不一致。讨论了与自发对称破缺概念的联系以及将纠缠态识别为指针基态。
We conjecture that optical coherences, i.e., quantum-mechanical coherences between states separated by Bohr frequencies in the optical regime, do not exist in optics experiments. We claim the exact vanishing of optical field amplitudes and atomic dipole expectation values, and we discuss the seemingly contradictory success of assigning finite values to such quantities in theoretical calculations. We show that our conjecture is not at variance with the observed interference between different light sources. The connection to the concept of spontaneous symmetry breaking and the identification of entangled states as pointer basis states is discussed.