论文标题
开放量子系统中稳定的多体共振
Stable many-body resonances in open quantum systems
论文作者
论文摘要
周期性驱动的量子多体系统表现出新的非平衡状态，例如预先化，离散的时间晶体和多体定位。最近，已经提出了分数共振的一般机制，从而导致$ u（1）$和平等对称性的系统中的多体动力学减慢。在这里，我们表明，在局部噪声模型下，分数共振是稳定的。为了证实我们的发现，我们从数值上研究了一个小规模的玻色式模型的动力学，该模型可以在现有的嘈杂中间尺度量子（NISQ）设备中很容易实现。我们的发现提出了通往稳定物质状态的可能途径，并具有量子记忆在量子信息处理中的潜在应用。
Periodically driven quantum many-body systems exhibit novel nonequilibrium states such as prethermalization, discrete time crystals, and many-body localization. Recently, the general mechanism of fractional resonances has been proposed that leads to slowing the many-body dynamics in systems with both $U(1)$ and parity symmetry. Here, we show that fractional resonance is stable under local noise models. To corroborate our finding, we numerically study the dynamics of a small-scale Bose-Hubbard model that can readily be implemented in existing noisy intermediate-scale quantum (NISQ) devices. Our findings suggest a possible pathway toward a stable nonequilibrium state of matter, with potential applications of quantum memories for quantum information processing.
