@misc{oai:repo.qst.go.jp:00079550,
 author = {Mizuno, Kosuke and Ishiwata, Hitoshi and Masuyama, Yuta and Iwasaki, Takayuki and Hatano, Mutsuko and Masuyama, Yuta and Hatano, Mutsuko},
 month = {Dec},
 note = {The nitrogen-vacancy center in diamond is an exquisite solid-state sensor based upon quantum nature.  Numerous studies have shown that dynamical decoupling, such as an XY8 sequence, provides us a high sensitivity for an oscillating magnetic field parametrized by amplitude and phase.  However, there are some drawbacks.  (1) A measurement using XY8 requires a careful adjustment of timings between XY8 sequences and the target signal.  (2) The XY8 has an intricate dependence on both parameters, so it is not applicable in a situation that both parameters simultaneously change.  (3) It is impossible to measure both parameters simultaneous, and they have to be measured severally.  In this study, we present that Qdyne1-3, a quantum-classical hybrid protocol, solves them, consisted of sequential and stroboscopic measurements.  The Qdyne does not require a timing adjustment before itself, has an intuitive dependency on both parameters, and let us a simultaneous measurement of both amplitude and phase.  Moreover, we implemented it on a widefield of view.  The large observation area of widefield modality and the high spatial resolution of NV center pave the way for a tiny-scale inspection by Eddy-current, which established sensors cannot detect., The 2nd International Forum on Quantum Metrology and Sensing への出席},
 title = {Simultaneous amplitude and phase imaging of AC magnetic signal on wide field setup},
 year = {2019}
}