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arXiv 2006.01162quant-phcond-mat.dis-nn
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固态系统中耗散引起的纠缠核自旋

Entangling Nuclear Spins by Dissipation in a Solid-state System

Xin Wang, Huili Zhang, Wengang Zhang, Xiaolong Ouyang, Xianzhi Huang, Yefei Yu, Yanqing Liu, Xiuying Chang, Dong-ling Deng, Luming Duan

摘要:

纠缠是量子力学的一个迷人的特征,也是大多数量子信息处理任务的关键成分。然而,纠缠的产生通常会受到不必要的耗散的阻碍,这是由于系统与其环境的不可避免的耦合。在这里,我们报告了一个实验,如何纠缠两个$^{13}$ C核自旋通过工程耗散在氮空位系统。我们利用电子自旋作为辅助,并结合幺正过程与辅助的光泵浦一起实现工程耗散,并确定性地产生两个核自旋的纠缠态,独立于它们的初始状态。我们的实验证明了工程耗散作为在固态系统中产生多量子比特纠缠的工具的力量。

英文摘要:

Entanglement is a fascinating feature of quantum mechanics and a key ingredient in most quantum information processing tasks. Yet the generation of entanglement is usually hampered by undesired dissipation owing to the inevitable coupling of a system with its environment. Here, we report an experiment on how to entangle two $^{13}$C nuclear spins via engineered dissipation in a nitrogen-vacancy system. We utilize the electron spin as an ancilla, and combine unitary processes together with optical pumping of the ancilla to implement the engineered dissipation and deterministically produce an entangled state of the two nuclear spins, independent of their initial states. Our experiment demonstrates the power of engineered dissipation as a tool for generation of multi-qubit entanglement in solid-state systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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