在压力驱动的克尔振荡器中,光谱接吻及其动态后果
Jorge Chávez-Carlos1, Talía L M Lezama2, Rodrigo G Cortiñas3
1Department of Physics, University of Connecticut, Storrs, CT 06269 USA.
NPJ quantum information
|April 26, 2024
概括
跨子量子比特模拟激发状态量子相变 (ESQPTs). 在驱动的传送信号中,光谱接吻向ESQPT前体发出信号,显示出独特的量子动力学,如相关系数的指数增长.
科学领域:
- 量子物理学的量子物理学
- 凝聚物质物理学 凝聚物质物理学
- 量子信息科学是一种量子信息科学.
背景情况:
- 超声量子比特是量子计算和信息处理中的关键元素.
- 除了量子比特之外,传送器还可以作为多层非线性振荡器,在基础物理中有应用.
- 量子相过渡 (QPTs) 通常描述基本状态的变化,但激发状态QPTs (ESQPTs) 将此概括为激发状态.
研究的目的:
- 探索跨子量子比特作为激发状态量子相转换 (ESQPTs) 的模拟器.
- 调查驱动超导电路中的光谱接吻现象,作为ESQPTs的前身.
- 分析超声系统中ESQPT的动态后果和可观察的签名.
主要方法:
- 使用驱动的SNAIL-transmon超导电路作为物理平台.
- 分析传递系统的有效哈密尔顿式,以确定光谱接吻.
- 模拟和观察动态特征,如时间外排序相关系数 (OTOC) 和生存概率演变.
主要成果:
- 在驱动的SNAIL-transmon中对光谱吻的实验观测,被确定为ESQPT前体.
- 展示动态后果,包括指数式增长和OTOC的周期性复苏.
- 缓慢的生存概率演变的观察表明了局部化,这是ESQPT的签名.
结论:
- 超声量子比特作为可行的模拟器来研究ESQPT及其独特的量子动力学.
- 观察到的光谱接吻是超导电路中ESQPT之前的直接实验特征.
- 已识别的ESQPT签名可以通过当前的超导电路技术进行实验,并且与其他量子系统相关.
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