title: Strong coupling of a spin ensemble to a superconducting resonator.
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 nitrogen-vacancy center electron spin resonance.
authors.affiliation: Quantronics group, SPEC (CNRS URA 2464), IRAMIS, DSM, CEA, 91191 Gif-sur-Yvette, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Kubo
authors.forename: F R
authors.initials: FR
authors.lastname: Ong
authors.forename: P
authors.initials: P
authors.lastname: Bertet
authors.forename: D
authors.initials: D
authors.lastname: Vion
authors.forename: V
authors.initials: V
authors.lastname: Jacques
authors.forename: D
authors.initials: D
authors.lastname: Zheng
authors.forename: A
authors.initials: A
authors.lastname: Dréau
authors.forename: J-F
authors.initials: JF
authors.lastname: Roch
authors.forename: A
authors.initials: A
authors.lastname: Auffeves
authors.forename: F
authors.initials: F
authors.lastname: Jelezko
authors.forename: J
authors.initials: J
authors.lastname: Wrachtrup
authors.forename: M F
authors.initials: MF
authors.lastname: Barthe
authors.forename: P
authors.initials: P
authors.lastname: Bergonzo
authors.forename: D
authors.initials: D
authors.lastname: Esteve