最优自旋压缩不等式可检测自旋模型中的束缚纠缠。
Optimal spin squeezing inequalities detect bound entanglement in spin models.
作者信息
Tóth Géza, Knapp Christian, Gühne Otfried, Briegel Hans J
机构信息
ICFO-Institut de Ciències Fotòniques, E-08860 Castelldefels (Barcelona), Spain.
出版信息
Phys Rev Lett. 2007 Dec 21;99(25):250405. doi: 10.1103/PhysRevLett.99.250405. Epub 2007 Dec 19.
Abstract
We determine the complete set of generalized spin squeezing inequalities. These are entanglement criteria that can be used for the experimental detection of entanglement in a system of spin-1/2 particles in which the spins cannot be individually addressed. They can also be used to show the presence of bound entanglement in the thermal states of several spin models.
摘要
我们确定了广义自旋压缩不等式的完整集合。这些是纠缠判据，可用于实验检测自旋为1/2的粒子系统中的纠缠，其中自旋不能被单独寻址。它们还可用于证明几种自旋模型热态中束缚纠缠的存在。
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