论文标题
普遍的哈密顿量描述离子光相互作用的瑕疵
Generalized Hamiltonian to describe imperfections in ion-light interaction
论文作者
论文摘要
我们得出了一个普通的哈密顿量，该通用的哈密顿量控制了$ n $ ion链与外部控制的激光场之间的相互作用，在该场中，对离子运动进行了量化，并且在平面波近似之外考虑了激光场。这种通用形式不仅明确包含用于驱动离子离子纠缠的术语，还包括一系列不需要的术语，这些术语可能导致量子门不忠。我们通过挑出轴向模式加热的效果并通过实验确认这一效果，证明了普通哈密顿量的表达能力。我们讨论了进一步促进陷阱离子量子计算质量的前进道路，并指导硬件设计决策。
We derive a general Hamiltonian that governs the interaction between an $N$-ion chain and an externally controlled laser field, where the ion motion is quantized and the laser field is considered beyond the plane-wave approximation. This general form not only explicitly includes terms that are used to drive ion-ion entanglement, but also a series of unwanted terms that can lead to quantum gate infidelity. We demonstrate the power of our expressivity of the general Hamiltonian by singling out the effect of axial mode heating and confirm this experimentally. We discuss pathways forward in furthering the trapped-ion quantum computational quality, guiding hardware design decisions.
