论文标题
通过固态系统中的耗散纠缠核自旋
Entangling Nuclear Spins by Dissipation in a Solid-state System
论文作者
论文摘要
纠缠是量子力学的有趣特征，也是大多数量子信息处理任务中的关键成分。然而，由于系统与环境的不可避免的耦合，通常会因不希望的耗散而阻碍纠缠的产生。在这里，我们报告了一个实验，讲述了如何通过氮 - 胶合系统中的工程耗散纠缠两个$^{13} $ c核自旋。我们将电子自旋用作Ancilla，并将单一过程与Ancilla的光学泵送结合起来，以实施工程耗散，并确定性地产生两个核自旋的纠缠状态，而与其初始状态无关。我们的实验证明了工程耗散的力量，作为在固态系统中产生多Qubit纠缠的工具。
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.
