Details
Original language | English |
---|---|
Article number | L012012 |
Journal | Physical Review Research |
Volume | 7 |
Issue number | 1 |
Publication status | Published - 17 Jan 2025 |
Abstract
We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in a staggered pattern with pairs of atoms on every other rung, singlon defects, i.e., rungs with only one atom, can localize due to an emergent topological model, even though the underlying model in the absence of interactions admits only topologically trivial states. This emergent topological localization results from the formation of a zero-energy edge mode in an effective lattice formed by two adjacent chains with alternating strong and weak hoping links (Su-Schrieffer-Heeger chains) and opposite staggering which interface at the defect position. Our findings open the opportunity to dynamically generate nontrivial topological behaviors without the need for complex Hamiltonian engineering.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Research, Vol. 7, No. 1, L012012, 17.01.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Emergent interaction-induced topology in Bose-Hubbard ladders
AU - Wellnitz, David
AU - Domínguez-Castro, Gustavo A.
AU - Bilitewski, Thomas
AU - Aidelsburger, Monika
AU - Rey, Ana Maria
AU - Santos, Luis
N1 - Publisher Copyright: © 2025 authors. Published by the American Physical Society.
PY - 2025/1/17
Y1 - 2025/1/17
N2 - We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in a staggered pattern with pairs of atoms on every other rung, singlon defects, i.e., rungs with only one atom, can localize due to an emergent topological model, even though the underlying model in the absence of interactions admits only topologically trivial states. This emergent topological localization results from the formation of a zero-energy edge mode in an effective lattice formed by two adjacent chains with alternating strong and weak hoping links (Su-Schrieffer-Heeger chains) and opposite staggering which interface at the defect position. Our findings open the opportunity to dynamically generate nontrivial topological behaviors without the need for complex Hamiltonian engineering.
AB - We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in a staggered pattern with pairs of atoms on every other rung, singlon defects, i.e., rungs with only one atom, can localize due to an emergent topological model, even though the underlying model in the absence of interactions admits only topologically trivial states. This emergent topological localization results from the formation of a zero-energy edge mode in an effective lattice formed by two adjacent chains with alternating strong and weak hoping links (Su-Schrieffer-Heeger chains) and opposite staggering which interface at the defect position. Our findings open the opportunity to dynamically generate nontrivial topological behaviors without the need for complex Hamiltonian engineering.
UR - http://www.scopus.com/inward/record.url?scp=85215253623&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2409.05109
DO - 10.48550/arXiv.2409.05109
M3 - Article
AN - SCOPUS:85215253623
VL - 7
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 1
M1 - L012012
ER -