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Title: Complex Density Wave Orders and Quantum Phase Transitions in a Model of Square-Lattice Rydberg Atom Arrays

Abstract

In this work, we describe the zero-temperature phase diagram of a model of a two-dimensional square-lattice array of neutral atoms, excited into Rydberg states and interacting via strong van der Waals interactions. Using the density-matrix renormalization group algorithm, we map out the phase diagram and obtain a rich variety of phases featuring complex density wave orderings, upon varying lattice spacing and laser detuning. While some of these phases result from the classical optimization of the van der Waals energy, we also find intrinsically quantum-ordered phases stabilized by quantum fluctuations. These phases are surrounded by novel quantum phase transitions, which we analyze by finite-size scaling numerics and Landau theories. Our work highlights Rydberg quantum simulators in higher dimensions as promising platforms to realize exotic many-body phenomena.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1]
  1. Harvard Univ., Cambridge, MA (United States)
  2. Harvard Univ., Cambridge, MA (United States); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
Publication Date:
Research Org.:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); Gordon and Betty Moore Foundation
OSTI Identifier:
1803508
Alternate Identifier(s):
OSTI ID: 1603837
Grant/Contract Number:  
SC0019030; GBMF4306; AY2019/2020; GBMF8682
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 10; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Physics

Citation Formats

Samajdar, Rhine, Ho, Wen Wei, Pichler, Hannes, Lukin, Mikhail D., and Sachdev, Subir. Complex Density Wave Orders and Quantum Phase Transitions in a Model of Square-Lattice Rydberg Atom Arrays. United States: N. p., 2020. Web. doi:10.1103/physrevlett.124.103601.
Samajdar, Rhine, Ho, Wen Wei, Pichler, Hannes, Lukin, Mikhail D., & Sachdev, Subir. Complex Density Wave Orders and Quantum Phase Transitions in a Model of Square-Lattice Rydberg Atom Arrays. United States. https://doi.org/10.1103/physrevlett.124.103601
Samajdar, Rhine, Ho, Wen Wei, Pichler, Hannes, Lukin, Mikhail D., and Sachdev, Subir. Tue . "Complex Density Wave Orders and Quantum Phase Transitions in a Model of Square-Lattice Rydberg Atom Arrays". United States. https://doi.org/10.1103/physrevlett.124.103601. https://www.osti.gov/servlets/purl/1803508.
@article{osti_1803508,
title = {Complex Density Wave Orders and Quantum Phase Transitions in a Model of Square-Lattice Rydberg Atom Arrays},
author = {Samajdar, Rhine and Ho, Wen Wei and Pichler, Hannes and Lukin, Mikhail D. and Sachdev, Subir},
abstractNote = {In this work, we describe the zero-temperature phase diagram of a model of a two-dimensional square-lattice array of neutral atoms, excited into Rydberg states and interacting via strong van der Waals interactions. Using the density-matrix renormalization group algorithm, we map out the phase diagram and obtain a rich variety of phases featuring complex density wave orderings, upon varying lattice spacing and laser detuning. While some of these phases result from the classical optimization of the van der Waals energy, we also find intrinsically quantum-ordered phases stabilized by quantum fluctuations. These phases are surrounded by novel quantum phase transitions, which we analyze by finite-size scaling numerics and Landau theories. Our work highlights Rydberg quantum simulators in higher dimensions as promising platforms to realize exotic many-body phenomena.},
doi = {10.1103/physrevlett.124.103601},
journal = {Physical Review Letters},
number = 10,
volume = 124,
place = {United States},
year = {Tue Mar 10 00:00:00 EDT 2020},
month = {Tue Mar 10 00:00:00 EDT 2020}
}

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Cited by: 38 works
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Works referencing / citing this record:

Quantum phases of Rydberg atoms on a kagome lattice
text, January 2020


Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
text, January 2020