标题： 抑制里德伯量子门的串扰 显示英文标题

标题： Suppressing crosstalk for Rydberg quantum gates

摘要： 我们提出一种方法，通过中性原子量子计算机中的局部寻址来抑制受控-Z门实现中的串扰。 在这些系统中，用于实现门的局部激光光通常会泄漏到其他原子上。 我们分析了由两个门原子和一个相邻的第三个原子组成的设置中产生的串扰。 然后，我们微扰地推导出一种类似于自旋回波的门协议，该协议抑制了主导串扰的幅度误差的领先阶次。 数值模拟表明，我们的门协议在广泛的实际参数范围内将保真度提高了两个数量级。 为了进一步减少不保真度，我们开发了一个电路以抵消剩余的相位误差。 我们的结果为在基于里德伯的量子计算机上使用局部寻址实现高保真度量子门铺平了道路。 显示英文摘要

摘要： We present a method to suppress crosstalk from implementing controlled-Z gates via local addressing in neutral atom quantum computers. In these systems, a fraction of the laser light that is applied locally to implement gates typically leaks to other atoms. We analyze the resulting crosstalk in a setup of two gate atoms and one neighboring third atom. We then perturbatively derive a spin-echo-inspired gate protocol that suppresses the leading order of the amplitude error, which dominates the crosstalk. Numerical simulations demonstrate that our gate protocol improves the fidelity by two orders of magnitude across a broad range of experimentally relevant parameters. To further reduce the infidelity, we develop a circuit to cancel remaining phase errors. Our results pave the way for using local addressing for high-fidelity quantum gates on Rydberg-based quantum computers.