论文标题
通过模式工程在被困的离子量子计算机上实现两倍的大门
Realizing two-qubit gates through mode engineering on a trapped-ion quantum computer
论文作者
论文摘要
两倍的门是量子计算机的基本组成部分，通常是其最具挑战性的操作。在被困的离子量子计算机中，通常用激光束实现，这些激光束以振幅，频率，相位或组合的组合进行调节。随着量子计算机变得更大，所需的调制变得越来越复杂，从而使控制硬件设计变得复杂。在这里，我们开发了一种简单的方法，可以通过工程化离子链的正常模式来消除脉冲调节复杂性。我们通过实验证明了三离子链中所需的模式工程。这打开了诱捕场设计与光学控制系统之间的复杂性的可能性，这将有助于扩展离子陷阱量子计算平台。
Two-qubit gates are a fundamental constituent of a quantum computer and typically its most challenging operation. In a trapped-ion quantum computer, this is typically implemented with laser beams which are modulated in amplitude, frequency, phase, or a combination of these. The required modulation becomes increasingly more complex as the quantum computer becomes larger, complicating the control hardware design. Here, we develop a simple method to essentially remove the pulse-modulation complexity by engineering the normal modes of the ion chain. We experimentally demonstrate the required mode engineering in a three ion chain. This opens up the possibility to trade off complexity between the design of the trapping fields and the optical control system, which will help scale the ion trap quantum computing platform.
