The error model of a quantum computer is essential for optimizing quantum algorithms to minimize the impact of errors using quantum error correction or error mitigation. Noise with temporal correlations, e.g. low-frequency noise and context-dependent noise, is common in quantum computation devices and sometimes even significant. However, conventional tomography methods have not been developed for obtaining an error model describing temporal correlations. In this paper, we propose self-consistent tomography protocols to obtain a model of temporally correlated errors, and we demonstrate that our protocols are efficient for low-frequency noise and context-dependent noise.

量子计算机的错误模型对于优化量子算法以使用量子纠错或错误缓解来最小化错误的影响至关重要。具有时间相关性的噪声，例如低频噪声和上下文相关噪声，在量子计算设备中很常见，有时甚至很重要。然而，尚未开发用于获得描述时间相关性的误差模型的常规断层摄影方法。在本文中，我们提出了自洽断层扫描协议来获得时间相关错误的模型，并且我们证明了我们的协议对于低频噪声和上下文相关噪声是有效的。