论文标题
超电原子混合物的通用量子计算和量子误差校正
Universal quantum computation and quantum error correction with ultracold atomic mixtures
论文作者
论文摘要
量子信息平台在控制多体纠缠和实施量子误差校正方面取得了巨大进展，但是在同一设置中实现这两者仍然是一个挑战。在这里，我们提出了两种超电原子种类的混合物，作为通用量子计算的平台与远程纠缠的大门，同时为量子误差校正提供了自然候选者。在拟议的设置中，一个原子物种实现了可调长度的局部集体旋转，这构成了基本信息单位。第二个原子物种产生语音激发，用于纠缠集体自旋。最后，我们讨论了Gottesman-Kitaev-Preskill代码的有限维版本，以保护集体旋转中编码的量子信息，从而为超速原子系统中通用易耐故障量子计算的可能性提供了可能性。
Quantum information platforms made great progress in the control of many-body entanglement and the implementation of quantum error correction, but it remains a challenge to realize both in the same setup. Here, we propose a mixture of two ultracold atomic species as a platform for universal quantum computation with long-range entangling gates, while providing a natural candidate for quantum error-correction. In this proposed setup, one atomic species realizes localized collective spins of tunable length, which form the fundamental unit of information. The second atomic species yields phononic excitations, which are used to entangle collective spins. Finally, we discuss a finite-dimensional version of the Gottesman-Kitaev-Preskill code to protect quantum information encoded in the collective spins, opening up the possibility to universal fault-tolerant quantum computation in ultracold atom systems.
