An $η$-condensate of fermionic atom pairs via adiabatic state preparation

Details An $η$-condensate of fermionic atom pairs via adiabatic state preparation An $η$-condensate of fermionic atom pairs via adiabatic state preparation

2009-11-10

arxiv.org/abs/0911.2005v1

Physics

Condensed Matter

Quantum Gases

5 pages, 4 figures

Scientific paper

We discuss how an $\eta$-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 renormalisation group methods, we analyse 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.

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