论文标题
部分可观测时空混沌系统的无模型预测
Five and three quantum dot systems as apparatuses for measuring energy-levels
论文作者
论文摘要
量子点（QD）系统提供了纳米结构的各种量子物理。到目前为止，已经对许多类型的半导体QD结构进行了实验制造和研究，并在理论上进行了分析。目前，QD系统已吸引了大量关注，作为量子计算机量子系统的单位。因此，除了量子位以外，将QD系统作为测量设备至关重要。在这里，我们从理论上研究了侧QD系统，作为目标QD的能量水平的测量设备。我们基于绿色功能方法制定了三个和五个QD的传输特性。计算两个侧QD对测量电流的能量差异的影响。讨论了测量的强度与测量引起的背部进动之间的权衡。发现介质耦合强度适合读取两个能级的差异。
A quantum dot (QD) system provides various quantum physics of nanostructures. So far, many types of semiconductor QD structures have been fabricated and investigated experimentally and analyzed theoretically. Presently, QD systems have attracted considerable attention as units for the qubit system of quantum computers. Therefore, it is vital to integrate QD systems as measurement devices in addition to qubits. Here, we theoretically investigate the side-QD system as a measurement apparatus for energy-levels of the target QDs. We formulate the transport properties of both three and five QDs based on the Green functions method. The effects of the energy-difference of two side-QDs on the measurement current are calculated. The trade-off between the strength of the measurement and the back-action induced by the measurement is discussed. It is found that the medium coupling strength is appropriate for reading out the difference of the two energy-levels.
