Spectroscopy of three strongly coupled flux qubits

Abstract

We have carried out spectroscopic measurements of a system of three strongly coupled four-junction flux qubits. The samples studied cover a wide range of parameters with the coupling energy between neighboring qubits varying between 0.75 GHz and 6.05 GHz. The observed complicated spectra agree well with eight-level theory. The experiments are relevant for the realization of a tunable coupling between qubits.

References in corpus (7)

• Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
• Decoherence of flux qubits due to 1/f flux noise
• Spectroscopy on two coupled flux qubits
• Parametric coupling for superconducting qubits
• Tunable coupling scheme for flux qubits at the optimal point
• Four-qubit device with mixed couplings
• Switchable resonant coupling of flux qubits

Cited by in corpus (6)

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• Resonant excitations of single and two-qubit systems coupled to a tank circuit
• Energies and Entanglement in Multiply-coupled Phase Qubit Systems
• Modeling Three and Four Coupled Phase Qubits