连续量子态测量和估计的耦合Ito方程
Coupled Ito equations of continuous quantum state measurement, and estimation
摘要：
我们讨论了一个非线性随机主方程，它支配着估计的量子态的时间演化。它的微分演化对应于依赖于真实量子态的时间连续测量的无穷小更新。新的随机主方程耦合到时间连续量子测量的两个标准随机微分方程。这是第一次，我们可以证明，计算的估计几乎总是收敛到真实的状态，也在低效率的测量。我们表明，我们的单态理论也可以适用于弱连续系综测量。
英文摘要：
We discuss a non-linear stochastic master equation that governs the time-evolution of the estimated quantum state. Its differential evolution corresponds to the infinitesimal updates that depend on the time-continuous measurement of the true quantum state. The new stochastic master equation couples to the two standard stochastic differential equations of time-continuous quantum measurement. For the first time, we can prove that the calculated estimate almost always converges to the true state, also at low-efficiency measurements. We show that our single-state theory can be adapted to weak continuous ensemble measurements as well.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
