Engineering analog quantum chemistry Hamiltonians using cold atoms in optical lattices
| Autor: | Javier Argüello-Luengo, Alejandro González-Tudela, Tao Shi |
|---|---|
| Přispěvatelé: | Fundación Caixa Galicia, Ministerio de Economía y Competitividad (España), Fundació Privada Cellex, Fundación Privada Mir-Puig, Generalitat de Catalunya, National Science Foundation (US), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España) |
| Rok vydání: | 2021 |
| Předmět: |
Discretization
FOS: Physical sciences 01 natural sciences Quantum chemistry 010305 fluids & plasmas symbols.namesake Theoretical physics 0103 physical sciences Molecule Química quàntica 010306 general physics Quantum Simulació Mètodes de Physics Quantum Physics Física [Àrees temàtiques de la UPC] Quantum technology Simulation methods Optical lattices Quantum Gases (cond-mat.quant-gas) symbols Hamiltonian (quantum mechanics) Condensed Matter - Quantum Gases Optoelectrònica Quantum Physics (quant-ph) Lattice basis |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0028-0836 |
| Popis: | 25 pags., 14 figs., 3 apps. Using quantum systems to efficiently solve quantum chemistry problems is one of the long-sought applications of near-future quantum technologies. In a recent work [J. Argüello-Luengo, Nature (London) 574, 215 (2019)NATUAS0028-083610.1038/s41586-019-1614-4], ultracold fermionic atoms have been proposed for this purpose by showing us how to simulate in an analog way the quantum chemistry Hamiltonian projected in a lattice basis set. Here, we continue exploring this path and go beyond these results in several ways. First, we numerically benchmark the working conditions of the analog simulator and find less demanding experimental setups where chemistry-like behavior in three dimensions can still be observed. We also provide a deeper understanding of the errors of the simulation appearing due to discretization and finite-size effects and provide a way to mitigate them. Finally, we benchmark the simulator characterizing the behavior of two-electron atoms (He) and molecules (HeH+) beyond the example considered in the original work. J.A.-L. acknowledges support from “la Caixa” Foundation (Grant No. 100010434) through the fellowship LCF/BQ/ES18/11670016, the Spanish Ministry of Economy and Competitiveness through the “Severo Ochoa” program (Grant No. CEX2019-000910-S), Fundació Privada Cellex, Fundació Mir-Puig, and Generalitat de Catalunya through the CERCA program and QuantumCat (Grant No. 001-P-001644). T.S. acknowledges the support from NSFC Grant No. 11974363. A.G.-T. acknowledges support from the Spanish Project No. PGC2018-094792-B-100 (MCIU/AEI/FEDER, EU) and from the CSIC Research Platform on Quantum Technologies No. PTI-001. |
| Databáze: | OpenAIRE |
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