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arXiv 2209.07307quant-phcond-mat.mes-hallcond-mat.str-el
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开放量子系统中的稳定多体共振

Stable many-body resonances in open quantum systems

Ruben Peña, Thi Ha Kyaw, Guillermo Romero

摘要:

周期驱动的量子多体系统表现出新颖的非平衡态,如预热化、离散时间晶体和多体局域化。最近,分数共振的一般机制已被提出,导致减慢系统中的多体动力学与$U(1)$和宇称对称。在这里,我们证明了分数阶共振在局部噪声模型下是稳定的。为了证实我们的发现,我们数值研究了一个小规模的玻色-哈伯德模型,可以很容易地实现在现有的噪声中尺度量子(NISQ)设备的动力学。我们的研究结果表明,一个可能的途径,一个稳定的非平衡态的物质,与潜在的应用量子存储器的量子信息处理。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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