标题： 识别任意精度的实验双态哈密顿量 显示英文标题

标题： Identifying an Experimental Two-State Hamiltonian to Arbitrary Accuracy

摘要： 量子系统的精度控制需要准确确定有效系统哈密顿量。 我们开发了一种方法，用于估计某些未知两态系统的哈密顿量参数，并提供这些参数的不确定度界限。 该方法只需要一个测量基，并且能够将系统初始化为某个任意状态，该状态不是所考虑哈密顿量的本征态。 研究了大量测量情况下的不确定度比例，发现其与测量次数的平方根成反比。 显示英文摘要

摘要： Precision control of a quantum system requires accurate determination of the effective system Hamiltonian. We develop a method for estimating the Hamiltonian parameters for some unknown two-state system and providing uncertainty bounds on these parameters. This method requires only one measurement basis and the ability to initialise the system in some arbitrary state which is not an eigenstate of the Hamiltonian in question. The scaling of the uncertainty is studied for large numbers of measurements and found to be proportional to one on the square-root of the number of measurements.