4 papers
Theoretical study of reflection spectroscopy for superconducting quantum parametrons
S. Masuda, A. Yamaguchi, T. Yamaji +4
Superconducting parametrons in the single-photon Kerr regime, also called KPOs, have been attracting increasing attention in terms of their applications to quantum annealing and un…
Proposed rapid detection of nuclear spins with entanglement-enhanced sensors
Hideaki Hakoshima, Yuichiro Matsuzaki, Toyofumi Ishikawa
Recently, there have been significant developments to detect nuclear spins with an nitrogen vacancy (NV) center in diamond. However, due to the nature of the short range dipole-dip…
Detection of the phase shift of an alternating-current magnetic field by quantum sensing with multiple-pulse decoupling sequences
Toyofumi Ishikawa, Akio Yoshizawa, Yasunori Mawatari +2
Magnetometry utilizing a spin qubit in a solid state possesses high sensitivity. In particular, a magnetic sensor with a high spatial resolution can be achieved with the electron-s…
Influence of dynamical decoupling sequences with finite-width pulses on quantum sensing for AC magnetometry
Toyofumi Ishikawa, Akio Yoshizwa, Yasunori Mawatari +2
Dynamical decoupling sequences with multiple pulses can be considered to exhibit filter functions for the time evolution of a qubit superposition state. They contribute to the impr…