Experimental implementation of quantum information processing by Zeeman-perturbed nuclear quadrupole resonance
Experimental implementation of quantum information processing by Zeeman-perturbed nuclear quadrupole resonance
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DOI：
10.1007/s11128-015-0967-3
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发表时间：
2014-04
影响因子：
2.5
通讯作者：
J. Teles;C. Rivera-Ascona;R. S. Polli;R. Oliveira-Silva;Edson L. G. Vidoto;J. P. Andreeta;T. Bonagamba
中科院分区：
文献类型：
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作者：
J. Teles;C. Rivera-Ascona;R. S. Polli;R. Oliveira-Silva;Edson L. G. Vidoto;J. P. Andreeta;T. Bonagamba
核磁共振在量子信息处理中得到了广泛的应用。然而，尽管核磁共振和核四极共振(NQR)有很大的相似之处，但利用NQR实现QIP的实验还没有报道。我们描述了基本量子门的实现以及它们在静态磁场微扰下利用线偏振射频脉冲产生和操纵赝势态的应用。NQR量子操作是使用具有3/2自旋的观测原子核的单晶样本实现的，并产生了一个两量子比特系统。结果表明，NQR可以成功地用于QIP的基础实验。与核磁共振相比，NQR的一个优势是主要的相互作用在样品内部，这使得系统更加紧凑，降低了成本，并使其更容易微型化到固态设备。此外，作为一个例子，压缩自旋态的研究可以得到NQR的相关贡献。
Nuclear magnetic resonance (NMR) has been widely used in the context of quantum information processing (QIP). However, despite the great similarities between NMR and nuclear quadrupole resonance (NQR), no experimental implementation for QIP using NQR has been reported. We describe the implementation of basic quantum gates and their applications on the creation and manipulation of pseudopure states using linearly polarized radiofrequency pulses under static magnetic field perturbation. The NQR quantum operations were implemented using a single-crystal sample ofand observingnuclei, which possess spin 3/2 and give rise to a two-qubit system. The results are very promising and indicate that NQR can be successfully used for performing fundamental experiments in QIP. One advantage of NQR in comparison with NMR is that the main interaction is internal to the sample, which makes the system more compact, lowering its cost and making it easier to be miniaturized to solid-state devices. Furthermore, as an example, the study of squeezed spin states could receive relevant contributions from NQR.