This note presents a simplified version of the OTOC$^{(2)}$ problem that was recently experimentally implemented by Google Quantum AI and collaborators. We present a formulation of the problem for growing input size and hope this spurs further theoretical work on the problem.

翻译：本简报提出了OTOC$^{(2)}$问题的一个简化版本，该问题近期已由Google Quantum AI与合作者完成实验实现。我们针对增长输入规模的问题提出了一个表述框架，期望能推动该问题的进一步理论研究。