Structural phase transition of the ion crystals embedded in an optical lattice

被引：10

作者：

Liu, Zhichao ^{[1
,2
]}

Chen, Liang ^{[1
]}

Li, Ji ^{[1
,2
]}

Zhang, Hang ^{[1
,2
]}

Li, Chengbin ^{[1
]}

Zhou, Fei ^{[1
]}

Su, Shilei ^{[3
]}

Yan, Leilei ^{[3
]}

Feng, Mang ^{[1
,3
,4
]}

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Zhengzhou Univ, Sch Phys, Zhengzhou 450001, Peoples R China

[4] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China

来源：

PHYSICAL REVIEW A | 2020年 / 102卷 / 03期

关键词：

Crystals - Temperature - Trapped ions - Crystal lattices - Optical materials - Laser cooling - Phase transitions;

D O I：

10.1103/PhysRevA.102.033116

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The structural phase transition (SPT) occurring in trapped-ion systems is a typical many-body physics, and the SPT induced by the thermal effect represents a special thermodynamic phenomenon between traditional thermodynamics and quantum thermodynamics. We explore this thermal-effect-induced SPT by embedding trapped Ca-40(+) ion crystals in an optical lattice, in which the ion crystals are confined by a surface-electrode trap and laser-cooled down to a temperature of several millikelvins. The considered thermal effect, leading to a temperature variation of tens of microkelvins in the SPT, comes completely from the optical lattice, which is independent of the laser irradiation regarding cooling of the ion crystals. In comparison with previous work [J. Li et al., Phys. Rev. A 99, 063402 (2019)], the present investigation helps to further clarify the effect of thermal fluctuation and further explore the positive role of the fluctuation in thermodynamics at the atomic level, even for potentially practical applications.

引用

页数：5

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