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Self-bound droplet clusters in laser-driven Bose-Einstein condensates

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Self-bound droplet clusters in laser-driven Bose-Einstein condensates. / Zhang, Yong Chang; Walther, Valentin; Pohl, Thomas.

I: Physical Review A, Bind 103, Nr. 2, 023308, 02.2021.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Zhang, Yong Chang ; Walther, Valentin ; Pohl, Thomas. / Self-bound droplet clusters in laser-driven Bose-Einstein condensates. I: Physical Review A. 2021 ; Bind 103, Nr. 2.

Bibtex

@article{95109d8353bf48cca196c8af7f9f1aa2,
title = "Self-bound droplet clusters in laser-driven Bose-Einstein condensates",
abstract = "We investigate a two-dimensional Bose-Einstein condensate that is optically driven via a retro-reflecting mirror, forming a single optical feedback loop. This induces a peculiar type of long-range atomic interaction with highly oscillatory behavior, and we show here how the sign of the underlying interaction potential can be controlled by additional optical elements and external fields. This additional tunability enriches the behavior of the system substantially and gives rise to a surprising range of ground states of the condensate. In particular, we find the emergence of self-bound crystals of quantum droplets with various lattice structures, from simple and familiar triangular arrays to complex superlattice structures and crystals with entirely broken rotational symmetry. This includes mesoscopic clusters composed of small numbers of quantum droplets as well as extended crystalline structures. Importantly, such ordered states are entirely self-bound and stable without any external in-plane confinement, having no counterpart to other quantum-gas settings with long-range atomic interactions.",
author = "Zhang, {Yong Chang} and Valentin Walther and Thomas Pohl",
note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",
year = "2021",
month = feb,
doi = "10.1103/PhysRevA.103.023308",
language = "English",
volume = "103",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Self-bound droplet clusters in laser-driven Bose-Einstein condensates

AU - Zhang, Yong Chang

AU - Walther, Valentin

AU - Pohl, Thomas

N1 - Publisher Copyright: © 2021 American Physical Society.

PY - 2021/2

Y1 - 2021/2

N2 - We investigate a two-dimensional Bose-Einstein condensate that is optically driven via a retro-reflecting mirror, forming a single optical feedback loop. This induces a peculiar type of long-range atomic interaction with highly oscillatory behavior, and we show here how the sign of the underlying interaction potential can be controlled by additional optical elements and external fields. This additional tunability enriches the behavior of the system substantially and gives rise to a surprising range of ground states of the condensate. In particular, we find the emergence of self-bound crystals of quantum droplets with various lattice structures, from simple and familiar triangular arrays to complex superlattice structures and crystals with entirely broken rotational symmetry. This includes mesoscopic clusters composed of small numbers of quantum droplets as well as extended crystalline structures. Importantly, such ordered states are entirely self-bound and stable without any external in-plane confinement, having no counterpart to other quantum-gas settings with long-range atomic interactions.

AB - We investigate a two-dimensional Bose-Einstein condensate that is optically driven via a retro-reflecting mirror, forming a single optical feedback loop. This induces a peculiar type of long-range atomic interaction with highly oscillatory behavior, and we show here how the sign of the underlying interaction potential can be controlled by additional optical elements and external fields. This additional tunability enriches the behavior of the system substantially and gives rise to a surprising range of ground states of the condensate. In particular, we find the emergence of self-bound crystals of quantum droplets with various lattice structures, from simple and familiar triangular arrays to complex superlattice structures and crystals with entirely broken rotational symmetry. This includes mesoscopic clusters composed of small numbers of quantum droplets as well as extended crystalline structures. Importantly, such ordered states are entirely self-bound and stable without any external in-plane confinement, having no counterpart to other quantum-gas settings with long-range atomic interactions.

UR - http://www.scopus.com/inward/record.url?scp=85100656277&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.103.023308

DO - 10.1103/PhysRevA.103.023308

M3 - Journal article

AN - SCOPUS:85100656277

VL - 103

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 2

M1 - 023308

ER -