Experimental magic state distillation for fault-tolerant quantum computing
Experimental magic state distillation for fault-tolerant quantum computing
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DOI：
10.1038/ncomms1166
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发表时间：
2011-01
影响因子：
16.6
通讯作者：
A. M. Souza;Jingfu Zhang;C. Ryan;R. Laflamme
中科院分区：
文献类型：
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作者：
A. M. Souza;Jingfu Zhang;C. Ryan;R. Laflamme
任何用于量子信息处理（QIP）的物理量子设备在实现中都会遇到错误。为了可靠和高效，量子计算机将需要纠错或避免错误的方法。通过量子纠错实现的容错将成为量子计算机的一个组成部分。在已经发现的实现它的许多方法中，一个非常成功的方法是使用横向门和特定的初始状态。其实现的一个关键要素是高保真初始状态的可用性，例如|0>和“魔法状态”。在这里，我们报告了一个实验，在核磁共振（NMR）量子处理器中进行，显示出足够的量子控制，以提高不完美的初始魔术状态的保真度，通过蒸馏其中五个到一个具有更高的保真度。
Any physical quantum device for quantum information processing (QIP) is subject to errors in implementation. In order to be reliable and efficient, quantum computers will need error-correcting or error-avoiding methods. Fault-tolerance achieved through quantum error correction will be an integral part of quantum computers. Of the many methods that have been discovered to implement it, a highly successful approach has been to use transversal gates and specific initial states. A critical element for its implementation is the availability of high-fidelity initial states, such as |0> and the 'magic state'. Here, we report an experiment, performed in a nuclear magnetic resonance (NMR) quantum processor, showing sufficient quantum control to improve the fidelity of imperfect initial magic states by distilling five of them into one with higher fidelity.