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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Quantum properties of a superposition of squeezed displaced two-mode vacuum and single-photon states
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Quantum properties of a superposition of squeezed displaced two-mode vacuum and single-photon states

机译：压缩位移双模真空和单光子态的叠加的量子性质

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摘要

In this paper, we study some quantum properties of a superposition of displaced squeezed two-mode vacuum and single-photon states, such as the second-order correlation function, the Cauchy-Schwarz inequality, quadrature squeezing, quasiprobability distribution functions and purity. These type of states include two mechanisms, namely interference in phase space and entanglement. We show that these states can exhibit sub-Poissonian statistics, squeezing and deviate from the classical Cauchy-Schwarz inequality. Moreover, the amount of entanglement in the system can be increased by increasing the squeezing mechanism. In the framework of the quasiprobability distribution functions, we show that the single-mode state can tend to the thermal state based on the correlation mechanism. A generation scheme for such states is given.
机译：在本文中，我们研究了位移压缩双模真空和单光子态的叠加的一些量子性质，例如二阶相关函数，柯西-舒瓦兹不等式，正交压缩，拟拟分布函数和纯度。这些类型的状态包括两种机制，即相空间干涉和纠缠。我们证明了这些状态可以表现出亚泊松统计量，从而挤压并偏离了经典的柯西-舒瓦兹不等式。而且，可以通过增加挤压机构来增加系统中的纠缠量。在拟概率分布函数的框架内，我们证明了单模态可以根据相关机制趋向于热态。给出了这种状态的生成方案。

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