44 citations · 250 across the 29 of their papers we have counts for
7 papers · 1 filter
Observation of individual vortex penetration in a coplanar superconducting resonator
Kirill Shulga, Shunsuke Nishimura, Pavel A. Volkov +7
We demonstrate the microwave signatures of individual Abrikosov-vortex penetration events in superconducting microwave resonators. resonators with a narrowed region near the…
Visualization of Current-Driven Vortex Formation in High- Cuprate Superconductors
Shunsuke Nishimura, Takeyuki Tsuji, Takayuki Iwasaki +3
Type-II superconductors exhibit hysteretic behavior due to the presence of quantum vortices, and the order in which temperature and external field are varied plays a decisive role.…
Beyond ensemble averaging: Parallelized single-shot readout of hole capture in diamond
Richard Monge, Yuki Nakamura, Olaf Bach +7
Understanding the generation, transport and capture of charge carriers in semiconductors is of fundamental technological importance. However, the ensemble measurement techniques ub…
GPa Pressure Imaging Using Nanodiamond Quantum Sensors
Ryotaro Suda, Kenshin Uriu, Kouki Yamamoto +5
We demonstrate wide-field optical microscopy of the pressure distribution at approximately 20 GPa in a diamond anvil cell (DAC), using nitrogen-vacancy (NV) centers in nanodiamonds…
Nanodiamond quantum thermometry assisted with machine learning
Kouki Yamamoto, Kensuke Ogawa, Moeta Tsukamoto +3
Nanodiamonds (NDs) are quantum sensors that enable local temperature measurements, taking advantage of their small size. Though the model based analysis methods have been used for…
Quantitative imaging of nonlinear spin-wave propagation using diamond quantum sensors
Kensuke Ogawa, Moeta Tsukamoto, Yusuke Mori +7
Spin waves propagating in magnetic materials exhibit nonlinear behavior at large amplitudes due to the competition between excitation and relaxation, providing an attractive platfo…
Systematic investigation of dynamic nuclear polarization with boron vacancy in hexagonal boron nitride
Yuki Nakamura, Shunsuke Nishimura, Takuya Iwasaki +7
Dynamic nuclear polarization (DNP) using the boron vacancy () in hexagonal boron nitride (hBN) has gained increasing attention. Understanding this DNP requires syst…