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arXiv · 2006.01162

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
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Abstract

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.

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Xin Wang, Huili Zhang, Wengang Zhang, Xiaolong Ouyang, Xianzhi Huang, Yefei Yu, Yanqing Liu, Xiuying Chang, Dong-ling Deng, Luming Duan. 2020-06-01. Entangling Nuclear Spins by Dissipation in a Solid-state System. https://doi.org/10.1103/physreva.102.032615

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