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

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 measu...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1140/epjqt/s40507-016-0049-1

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Department:
Oxford, MPLS, Physics, Atomic & Laser Physics
Role:
Author
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Funding agency for:
Kreula, J
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Publisher:
Springer Publisher's website
Journal:
EPJ Quantum Technology Journal website
Volume:
3
Issue:
11
Publication date:
2016-08-08
Acceptance date:
2016-07-23
DOI:
ISSN:
2196-0763
Pubs id:
pubs:640978
URN:
uri:f751e7a2-591b-4574-8b3b-29a765ebe039
UUID:
uuid:f751e7a2-591b-4574-8b3b-29a765ebe039
Local pid:
pubs:640978

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