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本文分析研究相干光与具有空间反演对称非线性介质作用的压缩性质.对于一种非线性介质,其势能具有空间反演对称性,在此情况下介质的偶次极化率为零,对介质极化起主导作用的是它的三次极化率.因此,单模光场与此介质相互作用的哈密顿量正比于光场的湮灭算符与产生算符和的四次方.也就是说我们在计算相干光通过这种具有空间反演对称介质时考虑到所有的能量非守恒项的作用. 相似文献
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We propose a scheme for the preparation of one-dimensional and
two-dimensional cluster states by using hot trapped ions. The scheme
is based on the interaction between two ions and bichromatic
radiation. The vibrational mode in our protocol is only virtually
excited so that the system is insensitive to the thermal field. In
addition, we only use two levels of ions as qubits and the
successful probability may achieve 100%. 相似文献
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利用Raman型的Jaynes-Cummings模型传送光场的福克叠加态 总被引:9,自引:0,他引:9
提出了一种利用Λ型三能级原子与光场Raman相互作用来传送光场的福克叠加态的方案. 相似文献
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Scheme for the implementation of 1→3
optimal phase-covariant quantum cloning in ion-trap systems 下载免费PDF全文
This paper proposes a scheme for the implementation of 1→ 3 optimal phase-covariant quantum cloning with trapped ions. In the present protocol, the required time for the whole procedure is short due to the resonant interaction, which is important in view of decoherence. Furthermore, the scheme is feasible based on current technologies. 相似文献
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在腔场与可移动镜子系统中对镜子位置的测量 总被引:3,自引:0,他引:3
描述利用腔场与镜的相互作用,对镜的位置坐标进行测量选域以使腔场变为Fock态的叠加态.并进一步讨论其压缩特性及相干性,通过数值计算,发现该腔场有非经典效应,即有一定的压缩效应和反聚束效应. 相似文献
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V型原子与光场拉曼相互作用传送未知原子态 总被引:10,自引:0,他引:10
未知量子态从一个地方到另一个地方的隐形传送在量子信息领域中有非常重要的作用,提出了一种利用简并V型三能级原子与振幅很大的单模相干态腔场的拉曼相互作用来传送未知原子态的方案。 相似文献
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A scheme for teleporting an arbitrary and unknown three-particle state from a sender to either one of two receivers is proposed. The quantum channel is composed of a two-particle non-maximally entangled state and two three-particle non-maximally entangled W states. An arbitrary three-particle state can be perfectly teleported probabilistically if the sender performs three generalized Bell-state measurements and sends to the two receivers the classical result of these measurements, and either one of the two receivers adopts an appropriate unitary transformation conditioned on the suitable measurement outcomes of the other receiver. All kinds of unitary transformations are given in detail. 相似文献