Research opportunities arising from measurement and estimation of quantum systems

摘要:

Abstract:

With the advancement of quantum experimental technology, quantum computing has earned many attentions and made great development. Meanwhile, quantum measurement theory [1] has become an indispensable component of it, ultimately working for the quantum state estimation. Being tools for emerging quantum computing technology, those two areas provide many research opportunities. Different from the classical world, quantum measurements cause dynamical changes that result in a limit to the obtained information about the quantum states. The relationships between information gained [2] and the dynamics induced (usually regarded as the damage to the systems caused by the measurement) thus become quite important since researchers always aim at finding the best measurements that gain as much information as possible with acceptable damage to the systems [3]....