A large-scale quantum simulator on a diamond surface at room temperature
A large-scale quantum simulator on a diamond surface at room temperature
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DOI：
10.1038/nphys2519
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发表时间：
2013-03-01
期刊：
影响因子：
19.6
通讯作者：
Plenio, Martin B.
中科院分区：
文献类型：
--
作者：
Cai, Jianming;Retzker, Alex;Plenio, Martin B.
强关联的量子多体系统可能表现出奇异相，如自旋液体和超固体。尽管它们的数值模拟对于少至50个粒子来说变得棘手，但量子模拟器提供了克服这一计算障碍的途径。然而，所提出的实现要么需要严格的条件，如低温/超高真空，要么极难规模化。在这里，我们提出了一个新的固态架构的可扩展的量子模拟器，由强相互作用的核自旋附着在金刚石表面。这种量子模拟器的探测、控制和读出可以通过在金刚石中注入氮空位中心来实现。该系统可以被设计成模拟各种各样的强相关的自旋模型。由于金刚石中核自旋和氮空位中心的上级相干时间，我们的提议为在环境温度和压力条件下进行大尺度量子模拟提供了新的机会。
Strongly correlated quantum many-body systems may exhibit exotic phases, such as spin liquids and supersolids. Although their numerical simulation becomes intractable for as few as 50 particles, quantum simulators offer a route to overcome this computational barrier. However, proposed realizations either require stringent conditions such as low temperature/ultra-high vacuum, or are extremely hard to scale. Here, we propose a new solid-state architecture for a scalable quantum simulator that consists of strongly interacting nuclear spins attached to the diamond surface. Initialization, control and read-out of this quantum simulator can be accomplished with nitrogen-vacancy centers implanted in diamond. The system can be engineered to simulate a wide variety of strongly correlated spin models. Owing to the superior coherence time of nuclear spins and nitrogen-vacancy centers in diamond, our proposal offers new opportunities towards large-scale quantum simulation at ambient conditions of temperature and pressure.