论文标题
量子相干性在能量波动中的作用
The role of quantum coherence in energy fluctuations
论文作者
论文摘要
我们讨论量子相干性在开放量子系统的能量波动中的作用。为此，我们介绍了一个操作方案，我们将其称为末端测量方案，从而允许将能量变化的统计数据定义为仅在演变后执行的能量测量的函数。以对初始能量价值的额外不确定性的价格，这种方法阻止了初始量子相干的损失，并可以估算其对能量波动的影响。我们使用三级量子系统与热储层相互作用说明了我们的发现。
We discuss the role of quantum coherence in the energy fluctuations of open quantum systems. To this aim, we introduce an operational protocol, to which we refer to as the end-point-measurement scheme, allowing to define the statistics of energy changes as a function of energy measurements performed only after its evolution. At the price of an additional uncertainty on the value of the initial energies, this approach prevents the loss of initial quantum coherences and enables the estimation of their effects on energy fluctuations. We illustrate our findings using a three-level quantum system in interaction with thermal reservoirs.
