期刊
EPJ QUANTUM TECHNOLOGY
卷 3, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1140/epjqt/s40507-016-0049-1
关键词
quantum simulation; dynamical mean-field theory; superconducting circuits
资金
- Christ Church, Oxford
- Osk Huttunen Foundation
- UPV/EHU PhD grant
- Spanish MINECO/FEDER [FIS2015-69983-P]
- UPV/EHU UFI [11/55, EHUA14/04]
- Ramon y Cajal Grant [RYC-2012-11391]
- EPSRC National Quantum Technology Hub in Networked Quantum Information Processing (NQIT) [EP/M013243/1]
- EPSRC [EP/M013243/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M013243/1] Funding Source: researchfish
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.
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