Complete quantum teleportation using nuclear magnetic resonance
Complete quantum teleportation using nuclear magnetic resonance
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DOI：
10.1038/23891
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发表时间：
1998-11-05
期刊：
影响因子：
64.8
通讯作者：
Laflamme, R
中科院分区：
文献类型：
--
作者：
Nielsen, MA;Knill, E;Laflamme, R
量子力学系统具有经典设备无法实现的信息处理能力（1,2），其中一个例子是量子隐形传态(3)，其中系统的量子态从一个位置传输到另一个位置，而不需要通过中间空间移动。但是，尽管使用光学系统已经实现了宏观距离上的量子隐形传态的部分实现（4,5），但隐形传态过程的最后阶段——允许完全恢复原始状态——被省略了。在这里，我们报告了利用液态核磁共振在原子间距离上实现全量子隐形传态的实验实现。我们利用碳核的自然相退相干，实现了三氯乙烯分子中碳核到氢核的量子态的隐形传态。这种隐形传态方案可以用作大型量子计算或量子通信的子程序。
Quantum-mechanical systems have information processing capabilities(1,2) that are not possible with classical devices, One example is quantum teleportation(3), in which the quantum state of a system is transported from one location to another without moving through the intervening space. But although partial implementations(4,5) of quantum teleportation over macroscopic distances have been achieved using optical systems, the final stage of the teleportation procedure-which allows the complete recovery of the original state-was omitted. Here we report an experimental implementation of full quantum teleportation over interatomic distances using liquid-state nuclear magnetic resonance. We achieve teleportation of the quantum state of a carbon nucleus to a hydrogen nucleus in molecules of trichloroethylene, by exploiting natural phase decoherence of the carbon nuclei. Such a teleportation scheme may be used as a subroutine in larger quantum computations, or for quantum communication.