Strong Coupling of a Spin Ensemble to a Superconducting Resonator
Y. Kubo, F. R. Ong, P. Bertet, D. Vion, V. Jacques, D. Zheng, A., Dr\'eau, J.-F. Roch, A. Auffeves, F. Jelezko, J. Wrachtrup, M.F. Barthe, P., Bergonzo, D. Esteve
TL;DR
This paper demonstrates strong coupling between an ensemble of NV center spins in diamond and a tunable superconducting resonator, evidenced by vacuum Rabi splitting, advancing quantum circuit integration.
Contribution
It reports the first realization of strong coupling between NV center spin ensembles and a superconducting resonator, enabling new quantum information processing possibilities.
Findings
Observation of vacuum Rabi splitting in transmission spectrum
Tunable superconducting resonator coupled to NV centers
First demonstration of strong spin-resonator coupling
Abstract
We report the realization of a quantum circuit in which an ensemble of electronic spins is coupled to a frequency tunable superconducting resonator. The spins are Nitrogen-Vacancy centers in a diamond crystal. The achievement of strong coupling is manifested by the appearance of a vacuum Rabi splitting in the transmission spectrum of the resonator when its frequency is tuned through the NV center electron spin resonance.
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