Chen Zeng-Bing, Pan Jian-Wei, Hou Guang, Zhang Yong-De
Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China.
Phys Rev Lett. 2002 Jan 28;88(4):040406. doi: 10.1103/PhysRevLett.88.040406. Epub 2002 Jan 14.
We generalize Bell's inequalities to biparty systems with continuous quantum variables. This is achieved by introducing the Bell operator in perfect analogy to the usual spin- 1/2 systems. It is then demonstrated that two-mode squeezed vacuum states display quantum nonlocality by using the generalized Bell operator. In particular, the original Einstein-Podolsky-Rosen states, which are the limiting case of the two-mode squeezed vacuum states, can maximally violate Bell's inequality due to Clauser, Horne, Shimony, and Holt. The experimental aspect of our scheme is briefly considered.
我们将贝尔不等式推广到具有连续量子变量的两体系统。这是通过引入贝尔算符来实现的，该算符与通常的自旋1/2系统完全类似。然后通过使用广义贝尔算符证明了双模压缩真空态表现出量子非局域性。特别地，原始的爱因斯坦 - 波多尔斯基 - 罗森态作为双模压缩真空态的极限情况，由于克劳泽、霍恩、希莫尼和霍尔特提出的贝尔不等式，它可以最大程度地违背该不等式。我们简要考虑了该方案的实验方面。
