论文标题
量子参考框架尺寸 - 准确性权衡取舍
A quantum reference frame size-accuracy trade-off for quantum channels
论文作者
论文摘要
最近对量子观测值的性质和结构的对称性进行了广泛研究，量子参考框架起着至关重要的作用。在本文中，我们将这项工作扩展到量子转换，从而给出定量结果，表明与观察到的情况直接类似，即非交流通道需要一个“大”参考框架才能由协变量近似。我们将发现应用于SU（2）对称性的混凝土设置。
The imposition of symmetry upon the nature and structure of quantum observables has recently been extensively studied, with quantum reference frames playing a crucial role. In this paper, we extend this work to quantum transformations, giving quantitative results showing, in direct analogy to the case of observables, that a "large" reference frame is required for non-covariant channels to be well approximated by covariant ones. We apply our findings to the concrete setting of SU(2) symmetry.
