Spectroscopic signatures of localization with interacting photons in superconducting qubits
Spectroscopic signatures of localization with interacting photons in superconducting qubits
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DOI：
10.1126/science.aao1401
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发表时间：
2017-12-01
期刊：
影响因子：
56.9
通讯作者：
Martinis, J.
中科院分区：
文献类型：
--
作者：
Roushan, P.;Neill, C.;Martinis, J.
量化的特征力及其相关的波函数为预测量子多体系统的物理学提供了广泛的信息。我们使用九个超导量子台的链，我们实施了一种解决相互作用光子的能级的技术。我们通过捕获磁场中二维电子（Hofstadter Butterfly）中预测的错综复杂的能量光谱的主要特征来对此方法进行基准测试。我们引入了障碍，以研究系统能量水平的统计数据，因为它经历了从热阶段到局部阶段的过渡。我们的工作引入了一种多体光谱技术来研究物质的量子阶段。
Quantized eigenenergies and their associated wave functions provide extensive information for predicting the physics of quantum many-body systems. Using a chain of nine superconducting qubits, we implement a technique for resolving the energy levels of interacting photons. We benchmark this method by capturing the main features of the intricate energy spectrum predicted for two-dimensional electrons in a magnetic field-the Hofstadter butterfly. We introduce disorder to study the statistics of the energy levels of the system as it undergoes the transition from a thermalized to a localized phase. Our work introduces a many-body spectroscopy technique to study quantum phases of matter.