165 citations · 616 across the 22 of their papers we have counts for
14 papers · 1 filter
Efficient creation of shallow NV ensembles by high-angle ion implantation
Kento Sasaki, Hideyuki Watanabe, Tokuyuki Teraji +3
Negatively charged nitrogen-vacancy (NV) centers located a few nanometers below the diamond surface are key quantum defects for nanoscale sensing of external spins. However, th…
Imaging of high-frequency electromagnetic field by multipulse sensing using nitrogen vacancy centers in diamond
Shintaro Nomura, Hideyuki Watanabe, Satoshi Kashiwaya
Near-field enhancement of the microwave field is applied for imaging high frequency radio field using a diamond chip with an -doped isotopically purified diamond layer grown by…
Angle dependence of N nuclear spin dynamics in diamond NV centers
Yusuke Azuma, Shintaro Nomura, Hideyuki Watanabe +1
We report on the dynamics of the Rabi oscillation and the Larmor precession of N nuclear spin using nonselective short microwave pulses for initialization of N nuclea…
Frequency-tunable magnetic field sensing using continuous-wave optically detected magnetic resonance with nitrogen-vacancy centers in diamond
Ryusei Okaniwa, Takumi Mikawa, Yuichiro Matsuzaki +8
The nitrogen-vacancy (NV) center is a promising candidate to realize practical quantum sensors with high sensitivity and high spatial resolution, even at room temperature and atmos…
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…
Control of all the transitions between ground state manifolds of nitrogen vacancy centers in diamonds by applying external magnetic driving fields
Tatsuma Yamaguchi, Yuichiro Matsuzaki, Soya Saijo +3
Nitrogen vacancy (NV) centers in diamonds is a promising system for quantum information processing and quantum sensing, and the control of the quantum state is essential for practi…
Bandwidth analysis of AC magnetic field sensing based on electronic spin double resonance of nitrogen-vacancy centers in diamond
Tatsuma Yamaguchi, Yuichiro Matsuzaki, Shiro Saito +3
Recently we have demonstrated AC magnetic field sensing scheme using a simple continuous-wave optically detected magnetic resonance of nitrogen-vacancy centers in diamond [Appl. Ph…
Demonstration of vector magnetic field sensing by simultaneous control of nitrogen-vacancy centers in diamond using multi-frequency microwave pulses
Ken Yahata, Yuichiro Matsuzaki, Shiro Saito +2
An ensemble of nitrogen-vacancy (NV) centers in diamond is a fascinating candidate to realize a sensitive magnetic field sensor. In particular, since the axes of the NV centers are…
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…
Coherent control of solid state nuclear spin nano-ensembles
Thomas Unden, Nikolas Tomek, Timo Weggler +11
Detecting and controlling nuclear spin nano-ensembles is crucial for the further development of nuclear magnetic resonance (NMR) spectroscopy and for the emerging solid state quant…
AC Magnetic Field Sensing Using Continuous-Wave Optically Detected Magnetic Resonance of Nitrogen Vacancy Centers in Diamond
Soya Saijo, Yuichiro Matsuzaki, Shiro Saito +4
Nitrogen-vacancy (NV) centers in diamond are considered sensors for detecting magnetic fields. Pulsed optically detected magnetic resonance (ODMR) is typically used to detect AC ma…
Isotope engineering of silicon and diamond for quantum computing and sensing applications
Kohei M. Itoh, Hideyuki Watanabe
Some of the stable isotopes of silicon and carbon have zero nuclear spin, whereas many of the other elements that constitute semiconductors consist entirely of stable isotopes that…
Absolute magnetometry based on quantum beats in diamond nitrogen-vacancy centers
Kejie Fang, Victor M. Acosta, Charles Santori +5
We demonstrate an absolute magnetometer immune to temperature fluctuation and strain inhomogeneity, based on quantum beats in the ground state of nitrogen-vacancy centers in diamon…