Spectroscopy on two coupled flux qubits

Details Spectroscopy on two coupled flux qubits Spectroscopy on two coupled flux qubits

2003-08-10

arxiv.org/abs/cond-mat/0308192v1

Phys. Rev. Lett 94, 090501 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.94.090501

We have performed spectroscopy measurements on two coupled flux qubits. The qubits are coupled inductively, which results in a $\sigma_1^z\sigma_2^z$ interaction. By applying microwave radiation, we observe resonances due to transitions from the ground state to the first two excited states. From the position of these resonances as a function of the magnetic field applied we observe the coupling of the qubits. The coupling strength agrees well with calculations of the mutual inductance.

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