论文标题
单光换能器中不均匀扩大补偿的控制设计
Control design for inhomogeneous broadening compensation in single-photon transducers
论文作者
论文摘要
微波和光学频率之间的单个光子的换能器可用于实现量子纤维链路上的量子通信，这是遥远的超导量子计算机之间的光纤连接。构造这种传感器的一种有希望的可扩展方法是使用在光学和微波频率下与电磁场同时相互作用的量子发射器的集合。但是，发射器的过渡频率的不均匀扩大可能对这种集体行动有害。在本文中，我们利用基于梯度的优化策略来设计驱动转导系统的激光场的时间形状，以减轻不均匀拓宽的影响。我们研究了转导效率的提高，这是不同单发射机协作制度中不均匀扩展的函数，并将其与发射机集成中的超级效应的恢复相关联。此外，为了评估我们的脉搏设计的最佳性，我们在设计问题上提供了可认证的界限，并将其与所达到的性能进行比较。
A transducer of single photons between microwave and optical frequencies can be used to realize quantum communication over optical fiber links between distant superconducting quantum computers. A promising scalable approach to constructing such a transducer is to use ensembles of quantum emitters interacting simultaneously with electromagnetic fields at optical and microwave frequencies. However, inhomogeneous broadening in the transition frequencies of the emitters can be detrimental to this collective action. In this article, we utilise a gradient-based optimization strategy to design the temporal shape of the laser field driving the transduction system to mitigate the effects of inhomogeneous broadening. We study the improvement of transduction efficiencies as a function of inhomogeneous broadening in different single-emitter cooperativity regimes and correlate it with a restoration of superradiance effects in the emitter ensembles. Furthermore, to assess the optimality of our pulse designs, we provide certifiable bounds on the design problem and compare them to the achieved performance.
