Dicke模型中量子相变和猝灭动力学的相似性超出了热力学极限

IF 5.8 2区物理与天体物理 Q1 OPTICS

EPJ Quantum Technology Pub Date : 2020-01-06 DOI:10.1140/epjqt/s40507-019-0077-8

Lituo Shen, Zhicheng Shi, Zhenbiao Yang, Huaizhi Wu, Zhirong Zhong, Shibiao Zheng

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引用次数: 9

摘要

我们研究了Dicke模型中超越热力学极限的量子相变。利用Kibble-Zurek机制和绝热动力学，我们发现剩余能量与量子比特数成反比，表明随着量子比特数的增加，更多的量子比特可以从振荡器获得更多的能量。最后，我们提出了一种可行的实验装置来实现该系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A similarity of quantum phase transition and quench dynamics in the Dicke model beyond the thermodynamic limit

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A similarity of quantum phase transition and quench dynamics in the Dicke model beyond the thermodynamic limit

We study the quantum phase transition in the Dicke model beyond the thermodynamic limit. With the Kibble–Zurek mechanism and adiabatic dynamics, we find that the residual energy is inversely proportional to the number of qubits, indicating that more qubits can obtain more energies from the oscillator as the number of qubits increases. Finally, we put forward a promising experiment device to realize this system.

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来源期刊

EPJ Quantum Technology Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

7.70

自引率

7.50%

发文量

审稿时长

71 days

期刊介绍： Driven by advances in technology and experimental capability, the last decade has seen the emergence of quantum technology: a new praxis for controlling the quantum world. It is now possible to engineer complex, multi-component systems that merge the once distinct fields of quantum optics and condensed matter physics. EPJ Quantum Technology covers theoretical and experimental advances in subjects including but not limited to the following: Quantum measurement, metrology and lithography Quantum complex systems, networks and cellular automata Quantum electromechanical systems Quantum optomechanical systems Quantum machines, engineering and nanorobotics Quantum control theory Quantum information, communication and computation Quantum thermodynamics Quantum metamaterials The effect of Casimir forces on micro- and nano-electromechanical systems Quantum biology Quantum sensing Hybrid quantum systems Quantum simulations.