期刊
PHYSICAL REVIEW RESEARCH
卷 2, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.043340
关键词
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资金
- FRS-FNRS
- ERC through the Starting Grant project TopoCold
- DFG-FWF (Austrian Science Fund) via FOR Grant [FOR2247/PI2790]
- European Union through the ERC
- Spanish Ministry of Economy and Competitiveness [Severo Ochoa program for Centres of Excellence in RD [CEX2019-000910-S]
- Plan National FISICATEAMO
- Fundacio Privada Cellex
- Fundacio Mir-Puig
- Generalitat de Catalunya (AGAUR) [2017 SGR 1341]
- CERCA program [U16-011424]
- ERDF Operational Program of Catalonia
- FWF (Austrian Science Fund) via the Elise Richter Fellowship [V792]
- QuantumCAT [U16-011424]
- Austrian Science Fund (FWF) [V792] Funding Source: Austrian Science Fund (FWF)
Activating transitions between a set of atomic internal states has emerged as an elegant scheme by which lattice models can be designed in ultracold atomic gases. In this approach, the internal states can be viewed as fictitious lattice sites defined along a synthetic dimension, hence offering a powerful method by which the spatial dimensionality of the system can be extended. Interparticle collisions generically lead to infinite-range interactions along the synthetic dimensions, which a priori precludes the design of Bose-Hubbard-type models featuring on-site interactions. In this paper, we solve this obstacle by introducing a protocol that realizes strong and tunable on-site interactions along an atomic synthetic dimension. Our scheme is based on pulsing strong intraspin interactions in a fast and periodic manner, hence realizing the desired on-site interactions in a digital (Trotterized) manner. We explore the viability of this protocol by means of numerical calculations, which we perform on various examples that are relevant to ultracold-atom experiments. This general method, which could be applied to various atomic species by means of fast-response protocols based on Fano-Feshbach resonances, opens the route for exploration of strongly correlated matter in synthetic dimensions.
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