Quantum phases of Rydberg atoms on a kagome lattice

被引：129

作者：

Samajdar, Rhine ^{[1
]}

Ho, Wen Wei ^{[1
,2
]}

Pichler, Hannes ^{[3
,4
]}

Lukin, Mikhail D. ^{[1
]}

Sachdev, Subir ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[3] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[4] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2021年 / 118卷 / 04期

关键词：

Rydberg quantum simulators; density-wave orders; quantum phase transitions; LIQUID GROUND-STATE; ENTANGLEMENT ENTROPY; ANTIFERROMAGNETS; ORDER;

D O I：

10.1073/pnas.2015785118

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We analyze the zero-temperature phases of an array of neutral atoms on the kagome lattice, interacting via laser excitation to atomic Rydberg states. Density-matrix renormalization group calculations reveal the presence of a wide variety of complex solid phases with broken lattice symmetries. In addition, we identify a regime with dense Rydberg excitations that has a large entanglement entropy and no local order parameter associated with lattice symmetries. From a mapping to the triangular lattice quantum dimer model, and theories of quantum phase transitions out of the proximate solid phases, we argue that this regime could contain one or more phases with topological order. Our results provide the foundation for theoretical and experimental explorations of crystalline and liquid states using programmable quantum simulators based on Rydberg atom arrays.

引用

页数：9

共 89 条

[41] High-Fidelity Control and Entanglement of Rydberg-Atom Qubits [J].