165 citations · 380 across the 12 of their papers we have counts for
12 papers
Spin coherence and depths of single nitrogen-vacancy centers created by ion implantation into diamond via screening masks
Shuntaro Ishizu, Kento Sasaki, Daiki Misonou +3
We characterize single nitrogen-vacancy (NV) centers created by 10-keV N+ ion implantation into diamond via thin SiO layers working as screening masks. Despite the relatively h…
Detection and control of single proton spins in a thin layer of diamond grown by chemical vapor deposition
Kento Sasaki, Hideyuki Watanabe, Hitoshi Sumiya +2
We report detection and coherent control of a single proton nuclear spin using an electronic spin of the nitrogen-vacancy (NV) center in diamond as a quantum sensor. In addition to…
Construction and operation of a tabletop system for nanoscale magnetometry with single nitrogen-vacancy centers in diamond
Daiki Misonou, Kento Sasaki, Shuntaro Ishizu +3
A single nitrogen-vacancy (NV) center in diamond is a prime candidate for a solid-state quantum magnetometer capable of detecting single nuclear spins with prospective application…
Determination of the Position of a Single Nuclear Spin from Free Nuclear Precessions Detected by a Solid-State Quantum Sensor
Kento Sasaki, Kohei M. Itoh, Eisuke Abe
We report on a nanoscale quantum-sensing protocol which tracks a free precession of a single nuclear spin and is capable of estimating an azimuthal angle---a parameter which standa…
Tutorial: Magnetic resonance with nitrogen-vacancy centers in diamond---microwave engineering, materials science, and magnetometry
Eisuke Abe, Kento Sasaki
This tutorial article provides a concise and pedagogical overview on negatively-charged nitrogen-vacancy (NV) centers in diamond. The research on the NV centers has attracted enorm…
Magnetic field sensitivity and decoherence spectroscopy of an ensemble of narrow-linewidth nitrogen-vacancy centers close to a diamond surface
Kento Sasaki, Ed E. Kleinsasser, Zhouyang Zhu +5
We perform pulsed optically detected electron spin resonance to measure the DC magnetic field sensitivity and electronic spin coherence time T_2 of an ensemble of near-surface, hig…
Polarization- and frequency-tunable microwave circuit for selective excitation of nitrogen-vacancy spins in diamond
Johannes Herrmann, Marc A. Appleton, Kento Sasaki +4
We report on a planar microwave resonator providing arbitrarily polarized oscillating magnetic fields that enable selective excitation of the electronic spins of nitrogen-vacancy (…
Broadband, large-area microwave antenna for optically-detected magnetic resonance of nitrogen-vacancy centers in diamond
Kento Sasaki, Yasuaki Monnai, Soya Saijo +5
We report on a microwave planar ring antenna specifically designed for optically-detected magnetic resonance (ODMR) of nitrogen-vacancy (NV) centers in diamond. It has the resonanc…
Time-Dependent Stochastic Acceleration Model for the Fermi Bubbles
Kento Sasaki, Katsuaki Asano, Toshio Terasawa
We study stochastic acceleration models for the Fermi bubbles. Turbulence is excited just behind the shock front via Kelvin--Helmholtz, Rayleigh--Taylor, or Richtmyer--Meshkov inst…
Time and Space Dependent Stochastic Acceleration Model for the Fermi Bubbles
K. Sasaki, K. Asano, T. Terasawa
Fermi-LAT reveals two huge gamma-ray bubbles existing in the Galactic Center, called 'Fermi Bubbles'. The existence of two microwave bubbles at the same region are also reported by…
Spinning eggs--which end will rise?
Ken Sasaki
We examine the spinning behavior of egg-shaped axisymmetric bodies whose cross sections are described by several oval curves similar to real eggs with thin and fat ends. We use the…
Thermal and Tunneling Pair Creation of Quasiparticles in Quantum Hall Systems
K. Sasaki, Z. F. Ezawa
We make a semiclassical analysis of thermal pair creations of quasiparticles at various filling factors in quantum Hall systems. It is argued that the gap energy is reduced conside…