Adiabatic quantum computation with flux qubits, first experimental results

Details Adiabatic quantum computation with flux qubits, first experimental results Adiabatic quantum computation with flux qubits, first experimental results

2007-02-25

arxiv.org/abs/cond-mat/0702580v1

Physics

Condensed Matter

Superconductivity

6 pages, 7 figures, Applied Superconductivity Conference 2006

Scientific paper

Controllable adiabatic evolution of a multi-qubit system can be used for adiabatic quantum computation (AQC). This evolution ends at a configuration where the Hamiltonian of the system encodes the solution of the problem to be solved. As a first steps towards realization of AQC we have investigated two, three and four flux qubit systems. These systems were characterized by making use of a radio-frequency method. We designed two-qubit systems with coupling energies up to several kelvins. For the three-flux-qubit systems we determined the complete ground-state flux diagram in the three dimensional flux space around the qubits common degeneracy point. We show that the system`s Hamiltonian can be completely reconstructed from our measurements. Our concept for the implementation of AQC, by making use of flux qubits, is discussed.

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