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Few-qubit quantum-classical simulation of strongly correlated lattice fermions


Reference:

Kreula, J. M., García-Álvarez, L., Lamata, L., Clark, S. R., Solano, E. and Jaksch, D., 2016. Few-qubit quantum-classical simulation of strongly correlated lattice fermions. EPJ Quantum Technology, 3, p. 11.

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Official URL:

http://dx.doi.org/10.1140/epjqt/s40507-016-0049-1

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Abstract

We study a proof-of-principle example of the recently proposed hybrid quantum-classical simulation of strongly correlated fermion models in the thermodynamic limit. In a "two-site" dynamical mean-field theory (DMFT) approach we reduce the Hubbard model to an effective impurity model subject to self-consistency conditions. The resulting minimal two-site representation of the non-linear hybrid setup involves four qubits implementing the impurity problem, plus an ancilla qubit on which all measurements are performed. We outline a possible implementation with superconducting circuits feasible with near-future technology.

Details

Item Type Articles
CreatorsKreula, J. M., García-Álvarez, L., Lamata, L., Clark, S. R., Solano, E. and Jaksch, D.
DOI10.1140/epjqt/s40507-016-0049-1
Related URLs
URLURL Type
http://dx.doi.org/10.1140/epjqt/s40507-016-0049-1Free Full-text
Uncontrolled Keywordsquant-ph
DepartmentsFaculty of Science > Physics
Research CentresCondensed Matter Physics CDT
RefereedYes
StatusPublished
ID Code53505
Additional Information20 pages, 10 figures

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