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基于测量的量子奥托发动机,采用双旋转系统,并与异性相互作用相结合:在有限时间下提高效率
Chayan Purkait1, Asoka Biswas1
1Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India.
Physical review. E
|June 17, 2023
概括
这项研究探讨了使用两个合旋转的量子奥托引擎 (QOE). 有限时间操作揭示了振荡效率,提供了比准静态发动机性能提高的潜力.
科学领域:
- 量子热力学就是量子热力学.
- 量子信息科学是一种量子信息科学.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 量子奥托发动机 (QOE) 是使用量子效应用于热力学循环的理论装置.
- 了解有限时间操作和相互作用的影响对于实际量子引擎设计至关重要.
研究的目的:
- 为了研究基于测量的量子奥托引擎的性能和效率.
- 分析有限时间单元操作和海森堡异性相互作用对发动机性能的影响.
- 通过精确定时量子过程来探索提高工作产出和效率的潜力.
主要方法:
- 模拟一个由海森堡异性互动作为工作物质配合的双旋系统.
- 使用非选择性的量子测量来驱动发动机循环.
- 基于能量固态和测量基础状态之间的过渡概率计算热力学量.
- 分析单元运行的不同时间尺度上的发动机性能 (有限时间t).
主要成果:
- 发动机效率在 τ→0 极限处达到顶峰,并且在 τ→∞ 时接近离心值.
- 有限时间运算和异构相互作用导致效率的振荡行为.
- 振荡归因于单元阶段中过渡幅度的干扰效应.
- 在短时间模式下,优化的定时可以比准静态发动机产生更高的工作输出和更低的热吸收.
- 在非常短的时间范围内,常开热浴的效果是可以忽略不计的.
结论:
- 有限时间量子运算引入了独特的动态,使得性能超出准静态极限.
- 量子干扰提供了一种提高量子引擎效率的机制.
- 仔细控制单元过程的时间是优化量子引擎性能的关键.
- 以测量为基础的量子引擎与异构相互作用显示出高效的能量转换有前途的途径.
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