Tuning long-range fermion-mediated interactions in cold-atom quantum simulators
| Autor: | Javier Argüello-Luengo, Alejandro González-Tudela, Daniel González-Cuadra |
|---|---|
| Přispěvatelé: | Fundación 'la Caixa', Ministerio de Ciencia e Innovación (España), Generalitat de Catalunya, Fundació Privada Cellex, Fundación Privada Mir-Puig, Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia, Innovación y Universidades (España), Comunidad de Madrid, Simons Foundation |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Popis: | 9 pags., 4 figs. Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Fermionic atoms in ultracold atomic mixtures can act as mediators, giving rise to long-range Ruderman-Kittel-Kasuya-Yosida-type interactions characterized by the dimensionality and density of the fermionic gas. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow one to further control the range and shape of the mediated interactions, extending the existing quantum simulation toolbox. In particular, we include an additional optical lattice for the fermionic mediator, as well as anisotropic traps to change its dimensionality in a continuous manner. This allows us to interpolate between power-law and exponential decays, introducing an effective cutoff for the interaction range, as well as to tune the relative interaction strengths at different distances. Finally, we show how our approach allows one to investigate frustrated regimes that were not previously accessible, where symmetry-protected topological phases as well as chiral spin liquids emerge. J. A. L. acknowledges support from ’la Caixa’ Foundation (ID 100010434) through the fellowship LCF/BQ/ES18/ 11670016, Severo Ochoa Grant CEX2019-000910-S [MCIN/AEI/10.13039/501100011033], Generalitat de Catalunya (CERCA program), Fundació Cellex, and Fundació Mir-Puig. A. G. T. acknowledges support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+), from Spanish project PGC2018-094792-B-100(MCIU/AEI/FEDER, EU), and from the Proyecto Sinergico CAM 2020 Y2020/TCS-6545 (NanoQuCo-CM). D. G. C. is supported by the Simons Collaboration on Ultra-Quantum Matter, which is a grant from the Simons Foundation (651440, P. Z.). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|