title: Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV(-) centers.
abstract: A hybrid system that combines the advantages of a superconductor flux qubit and an electron spin ensemble in diamond is one of the promising devices to realize quantum information processing. Exploring the properties of the superconductor diamond system is essential for the efficient use of this device. When we perform spectroscopy of this system, significant power broadening is observed. However, previous models to describe this system are known to be applicable only when the power broadening is negligible. Here, we construct a new approach to analyze this system with strong driving, and succeed in reproducing the spectrum with the power broadening. Our results provide an efficient way to analyze this hybrid system.
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan. Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Cai
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuzaki
authors.forename: K
authors.initials: K
authors.lastname: Kakuyanagi
authors.forename: H
authors.initials: H
authors.lastname: Toida
authors.forename: X
authors.initials: X
authors.lastname: Zhu
authors.forename: N
authors.initials: N
authors.lastname: Mizuochi
authors.forename: K
authors.initials: K
authors.lastname: Nemoto
authors.forename: K
authors.initials: K
authors.lastname: Semba
authors.forename: W J
authors.initials: WJ
authors.lastname: Munro
authors.forename: S
authors.initials: S
authors.lastname: Saito
authors.forename: H
authors.initials: H
authors.lastname: Yamaguchi