Emergent interaction-induced topology in Bose-Hubbard ladders
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 locali...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-01-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.L012012 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841525316893278208 |
|---|---|
| author | David Wellnitz Gustavo A. Domínguez-Castro Thomas Bilitewski Monika Aidelsburger Ana Maria Rey Luis Santos |
| author_facet | David Wellnitz Gustavo A. Domínguez-Castro Thomas Bilitewski Monika Aidelsburger Ana Maria Rey Luis Santos |
| author_sort | David Wellnitz |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-a9f18294f301447098fcbe20c30a588f |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-a9f18294f301447098fcbe20c30a588f2025-01-17T15:04:50ZengAmerican Physical SocietyPhysical Review Research2643-15642025-01-0171L01201210.1103/PhysRevResearch.7.L012012Emergent interaction-induced topology in Bose-Hubbard laddersDavid WellnitzGustavo A. Domínguez-CastroThomas BilitewskiMonika AidelsburgerAna Maria ReyLuis SantosWe 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.http://doi.org/10.1103/PhysRevResearch.7.L012012 |
| spellingShingle | David Wellnitz Gustavo A. Domínguez-Castro Thomas Bilitewski Monika Aidelsburger Ana Maria Rey Luis Santos Emergent interaction-induced topology in Bose-Hubbard ladders Physical Review Research |
| title | Emergent interaction-induced topology in Bose-Hubbard ladders |
| title_full | Emergent interaction-induced topology in Bose-Hubbard ladders |
| title_fullStr | Emergent interaction-induced topology in Bose-Hubbard ladders |
| title_full_unstemmed | Emergent interaction-induced topology in Bose-Hubbard ladders |
| title_short | Emergent interaction-induced topology in Bose-Hubbard ladders |
| title_sort | emergent interaction induced topology in bose hubbard ladders |
| url | http://doi.org/10.1103/PhysRevResearch.7.L012012 |
| work_keys_str_mv | AT davidwellnitz emergentinteractioninducedtopologyinbosehubbardladders AT gustavoadominguezcastro emergentinteractioninducedtopologyinbosehubbardladders AT thomasbilitewski emergentinteractioninducedtopologyinbosehubbardladders AT monikaaidelsburger emergentinteractioninducedtopologyinbosehubbardladders AT anamariarey emergentinteractioninducedtopologyinbosehubbardladders AT luissantos emergentinteractioninducedtopologyinbosehubbardladders |