Journal article
Quantum simulation of the Hubbard model with dopant atoms in silicon
J Salfi, JA Mol, R Rahman, G Klimeck, MY Simmons, LCL Hollenberg, S Rogge
Nature Communications | NATURE PUBLISHING GROUP | Published : 2016
DOI: 10.1038/ncomms11342
Open access
Abstract
In quantum simulation, many-body phenomena are probed in controllable quantum systems. Recently, simulation of Bose-Hubbard Hamiltonians using cold atoms revealed previously hidden local correlations. However, fermionic many-body Hubbard phenomena such as unconventional superconductivity and spin liquids are more difficult to simulate using cold atoms. To date the required single-site measurements and cooling remain problematic, while only ensemble measurements have been achieved. Here we simulate a two-site Hubbard Hamiltonian at low effective temperatures with single-site resolution using subsurface dopants in silicon. We measure quasi-particle tunnelling maps of spin-resolved states with ..
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Awarded by Army Research Office
Funding Acknowledgements
We thank H. Wiseman, M.A. Eriksson, M.S. Fuhrer, O. Sushkov, D. Culcer, J.-S. Caux, B. Reulet, G. Sawatzky, J. Folk, F. Remade, M. Klymenko and B. Voisin for helpful discussions. This work was supported by the European Commission Future and Emerging Technologies Proactive Project MULTI (317707), the ARC Centre of Excellence for Quantum Computation and Communication Technology (CE110001027) and in part by the US Army Research Office (W911NF-08-1-0527) and ARC Discovery Project (DP120101825). S.R. acknowledges a Future Fellowship (FT100100589). M.Y.S. acknowledges a Laureate Fellowship. The authors declare no competing financial interests.