η condensate of fermionic atom pairs via adiabatic state preparation.
We discuss how an η condensate, corresponding to an exact excited eigenstate of the Fermi-Hubbard model, can be produced with cold atoms in an optical lattice. Using time-dependent density matrix renormalization group methods, we analyze a state preparation scheme beginning from a band insulator state in an optical superlattice. This state can act as an important test case, both for adiabatic preparation methods and the implementation of the many-body Hamiltonian, and measurements on the final state can be used to help detect associated errors.
Kantian
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Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
Daley
A J
AJ
Zoller
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