Creation and Destruction of Entanglement via Fourier Multiport Devices
Creation and Destruction of Entanglement via Fourier Multiport Devices
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DOI：
10.1088/0253-6102/53/2/13
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发表时间：
2010-02
影响因子：
3.1
通讯作者：
Wu Song-An;Kuang Le-Man
中科院分区：
文献类型：
--
作者：
Wu Song-An;Kuang Le-Man
We study entangling and disentangling functions of optical Fourier multiport devices in which input-output relation for the creation and annihilation operators is given by a finite Fourier transform. It is shown that these Fourier multiport devices can act as entanglement converters which can not only create entanglement from an unentangled state at the input but also destroy entanglement in an entangled state at the input. Creation and destruction of two-mode and three-mode entangled coherent states (ECSs) are investigated in detail. The creation and destruction of Bell-type two-mode ECS, GHZ-type and W-type three-mode ECSs are indicated explicitly through using Fourier four-port and six-port devices, respectively.
