论文标题
用于量子系统优化的量子断层扫描
Quantum tomography for quantum systems optimization
论文作者
论文摘要
调试量子状态转换是现代量子计算的重要任务。用于这些目的的量子断层扫描的使用大大扩大了可能性的范围。但是，制备和测量误差的存在使该程序的实际使用复杂化。在这项工作中，我们研究了从实验中估算这些错误的可能性。这些估计值随后用于构建强大的量子断层扫描模型。该模型允许一个人准确地重建单量门门的统一误差。我们表明，拥有如此不完美的单量门门具有预估计的错误，可以获得接近理想的转换。类似的方法还可以显着减轻单量门的串扰。
Debugging quantum states transformations is an important task of modern quantum computing. The use of quantum tomography for these purposes significantly expands the range of possibilities. However, the presence of preparation and measurement errors complicates the practical use of this procedure. In this work, we investigate the possibility of estimating these errors from experiment. These estimates are subsequently used to build a robust quantum tomography model. The model allows one to accurately reconstruct unitary errors of single-qubit gates. We show that, having such imperfect single-qubit gates with pre-estimated errors, one can obtain transformations close to ideal ones. A similar approach can also significantly mitigate single-qubit gates cross-talk.
