40 citations · 40 across the 5 of their papers we have counts for
5 papers · 1 filter
Robust Diamond Quantum Sensing in Double-Quantum 4-Ramsey Interferometry by Dual-Feedback Scheme
Yuta Araki, Takeharu Sekiguchi, Yuji Hatano +11
We developed a highly sensitive and long-term stable diamond quantum magnetometer by integrating a dual-feedback system that compensates for common- and differential-mode frequency…
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…
A Highly Sensitive Diamond NV Magnetometer Using Ramsey Interferometry with a Short Sensor-to-Sample Distance
Yuta Araki, Takeharu Sekiguchi, Yuji Hatano +11
In this study, we developed a diamond quantum magnetometer based on Ramsey interferometry with a short sensor-to-sample distance. Conventional biomagnetic sensors with ensemble nit…
Multichannel highly sensitive diamond quantum magnetometer
Atsumi Yoshimura, Ayumi Kanamoto, Naota Sekiguchi +9
We demonstrate a highly sensitive real-time magnetometry method at two measurement points. This magnetometry method is based on the frequency-division multiplexing of continuous-wa…
Diamond quantum magnetometer with dc sensitivity of < 10 pT Hz toward measurement of biomagnetic field
N. Sekiguchi, M. Fushimi, A. Yoshimura +10
We present a sensitive diamond quantum sensor with a magnetic field sensitivity of in a near-dc frequency range of 5 to 100~Hz. This sensor is b…