论文标题
Rydberg量子模拟器中的Landau-Forbidden量子关键性
Landau-Forbidden Quantum Criticality in Rydberg Quantum Simulators
论文作者
论文摘要
Landau-Ginzburg-Wilson相变的理论排除了两个阶段之间自发打破不同对称性的阶段之间的连续过渡。然而，量子机械效应会交织在一起的对称性，从而产生一种外来现象，称为识别量子临界点（DQC）。在这项工作中，我们研究了通过Rydberg States强烈相互作用的单个单独捕获的中性原子的一维中性阵列的基态相图，并通过广泛的数值模拟证明，它构成了各种对称性的破坏阶段及其包括DQC在内的过渡。我们展示了如何在DQC上产生扩大的，紧急的连续对称性，可以在两个不同的阶参数的联合分布中观察到，这是在标准计算基础上在测量快照中获得的。我们的发现突出了Rydberg Atoms的量子模拟器，不仅是实验中实现这种异国情调现象的有前途的平台，而且是允许在传统实验中无法获得的物理特性的独特现象。
The Landau-Ginzburg-Wilson theory of phase transitions precludes a continuous transition between two phases that spontaneously break distinct symmetries. However, quantum mechanical effects can intertwine the symmetries, giving rise to an exotic phenomenon called deconfined quantum criticality (DQC). In this work, we study the ground state phase diagram of a one-dimensional array of individually trapped neutral atoms interacting strongly via Rydberg states, and demonstrate through extensive numerical simulations that it hosts a variety of symmetry-breaking phases and their transitions including DQC. We show how an enlarged, emergent continuous symmetry arises at the DQCs, which can be experimentally observed in the joint distribution of two distinct order parameters, obtained within measurement snapshots in the standard computational basis. Our findings highlight quantum simulators of Rydberg atoms not only as promising platforms to experimentally realize such exotic phenomena, but also as unique ones allowing access to physical properties not obtainable in traditional experiments.
