Spectroscopy on Two Coupled Superconducting Flux Qubits

Abstract

We have performed spectroscopy measurements on two coupled flux qubits. The qubits are coupled inductively, which results in a sigma(z)(1)sigma(z)(2) 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 applied magnetic field, we observe the coupling of the qubits. The coupling strength agrees with calculations of the mutual inductance.

Locations

• Physical Review Letters - View
• arXiv (Cornell University) - View - PDF
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