Trispectrum reconstruction of non-Gaussian noise
Trispectrum reconstruction of non-Gaussian noise
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DOI：
10.1103/physrevb.100.161302
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发表时间：
2019-10-09
影响因子：
3.7
通讯作者：
Ramon, Guy
中科院分区：
文献类型：
--
作者：
Ramon, Guy
在经典随机电报过程的背景下，从理论上研究了使用量子位探测非高斯噪声环境。开发控制脉冲协议是为了有效扫描更高的噪声相关性，提供有关量子位电荷环境的有价值的信息。具体来说，针对各种量子位-波动器耦合强度同时重建了噪声功率谱和三谱，证明了该方法的鲁棒性。这些协议很容易在具有成熟量子控制的各种量子位系统中进行测试，包括量子点自旋、超导量子位和金刚石中的氮空位中心。
Using a qubit to probe non-Gaussian noise environments is theoretically studied in the context of classical random telegraph processes. Protocols for control pulses are developed to effectively scan higher noise correlations, offering valuable information on the charge environment of the qubit. Specifically, the noise power spectrum and trispectrum are reconstructed simultaneously for a wide range of qubit-fluctuator coupling strengths, demonstrating the method's robustness. These protocols are readily testable in various qubit systems with well-developed quantum control, including quantum dot spins, superconducting qubits, and nitrogen-vacancy centers in diamond.