178 citations · 296 across the 5 of their papers we have counts for
5 papers
A three-dimensional Josephson parametric amplifier
I. Mahboob, H. Toida, K. Kakuyanagi +2
A Josephson parametric amplifier (JPA) is executed in a three-dimensional (3D) microwave cavity by coupling it to a superconducting quantum interference device (SQUID) that is embe…
A long-lived capacitively shunted flux qubit embedded in a 3D cavity
Leonid V. Abdurakhimov, Imran Mahboob, Hiraku Toida +2
We report the experimental realization of a 3D capacitively-shunt superconducting flux qubit with long coherence times. At the optimal flux bias point, the qubit demonstrates energ…
Long-range and selective coupler for superconducting flux qubits
H. Nakano, K. Kakuyanagi, M. Ueda +1
We propose a qubit-qubit coupling scheme for superconducting flux quantum bits (qubits), where a quantized Josephson junction resonator and microwave irradiation are utilized. The…
Texture in the Superconducting Order Parameter of CeCoIn_5 Revealed by Nuclear Magnetic Resonance
K. Kakuyanagi, M. Saito, K. Kumagai +4
We present a ^{115}In NMR study of the quasi two-dimensional heavy-fermion superconductor CeCoIn_5 believed to host a Fulde-Ferrel-Larkin-Ovchinnkov (FFLO) state. In the vicinity o…
Antiferromagnetic Vortex Core of Tl_2Ba_2CuO_{6+x} Studied by Nuclear Magnetic Resonance
K. Kakuyanagi, K. Kumagai, Y. Matsuda +1
Spatially-resolved NMR is used to probe the magnetism in and around vortex cores of nearly optimally-doped Tl_2Ba_2CuO_{6+x} (Tc=85 K). The NMR relaxation rate 1/T_1 at Tl site pro…