165 citations · 312 across the 17 of their papers we have counts for
18 papers
Continuous-wave AC magnetometry up to hundreds of megahertz using nitrogen-vacancy centers under a strong transverse magnetic field
Ryusei Okaniwa, Rui Suzuki, Yuichiro Matsuzaki +2
Nitrogen-vacancy (NV) centers in diamond are promising quantum sensors for AC magnetic fields. However, conventional dynamical-decoupling-based magnetometry becomes technically dem…
Analysis of Superradiance-Based Quantum Metrology under Independent Markovian Pure Dephasing
Yasunari Sakuma, Yuichiro Matsuzaki, Hoi-Kwan Lau +1
Recently, a DC magnetometry protocol utilizing -spin-ensemble superradiance was proposed. This method physically amplifies the acquired signal, suppressing estimation errors fro…
Broadband AC Magnetic Field Sensing via Continuous wave optically detected magnetic resonance with NV Centers in diamond
Ryohei Dokai, Ryusei Okaniwa, Miku Ishizaki +2
The nitrogen-vacancy (NV) center in diamond has attracted considerable attention as a highly sensitive quantum sensor that can operate at room temperature. In particular, continuou…
Spatial mapping of quantum-dot dynamics across multiple timescales at low temperature using remote asynchronous optical sampling
Gen Asambo, Riku Shibata, Yushiro Takahashi +3
Quantum dots (QDs) offer significant potential for applications in quantum information and optoelectronic devices; however, conventional time-resolved spectroscopy cannot generally…
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…
Electron-spin double resonance of nitrogen-vacancy centers in diamond under strong driving field
Takumi Mikawa, Ryusei Okaniwa, Yuichiro Matsuzaki +2
The nitrogen-vacancy (NV) center in diamond has been the focus of research efforts because of its suitability for use in applications such as quantum sensing and quantum simulation…
Temperature Sensing with RF-Dressed States of Nitrogen-Vacancy Centers in Diamond
H. Tabuchi, Y. Matsuzaki, N. Furuya +5
Nitrogen vacancy (NV) centers in diamond are promising systems for realizing sensitive temperature sensors. Pulsed optically detected magnetic resonance (Pulsed-ODMR) is one of the…
Evaluation of Femtosecond Time-bin Qubits Using Frequency Up-conversion Technique
Yuta Kochi, Sunao Kurimura, Junko Ishi-Hayase
Time-bin qubits, in which quantum information is encoded in a single photon at different times t, are suitable for long-distance transmission via optical fibers. However, detect…
Floquet engineering using pulse driving in a diamond two-level system under a large-amplitude modulation
Shunsuke Nishimura, Kohei M. Itoh, Junko Ishi-Hayase +2
The nitrogen-vacancy (NV) center in a diamond is a promising platform for Floquet engineering. Using the synchronized readout, we investigate the NV center's Floquet state driven b…
Vector DC magnetic-field sensing with reference microwave field using perfectly aligned nitrogen-vacancy centers in diamond
Takuya Isogawa, Yuichiro Matsuzaki, Junko Ishi-Hayase
The measurement of vector magnetic fields with high sensitivity and spatial resolution is important for both fundamental science and engineering applications. In particular, magnet…
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…
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…
Single spin detection with an ensemble of probe spins
Syuhei Uesugi, Yuichiro Matsuzaki, Suguru Endo +2
Single spin detection is a key objective in the field of metrology. There have been many experimental and theoretical investigations for the spin detection based on the use of prob…
Vector magnetic field sensing via multi-frequency control of nitrogen-vacancy centers in diamond
Sayaka Kitazawa, Yuichiro Matsuzaki, Saijo Soya +3
An ensemble of nitrogen-vacancy (NV) centers in diamond is an attractive device to detect small magnetic fields. In particular, by exploiting the fact that the NV center can be ali…
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…
Theory of multiwave mixing and decoherence control in qubit array system
M. Sasaki, A. Hasegawa, J. I. Hayase +2
We develop a theory to analyze the decoherence effect in a charged qubit array system with photon echo signals in the multiwave mixing configuration. We present how the decoherence…