203 citations · 457 across the 13 of their papers we have counts for
13 papers
Frequency limits of sequential readout for sensing AC magnetic fields using nitrogen-vacancy centers in diamond
Santosh Ghimire, Seong-Joo Lee, Sangwon Oh +1
The nitrogen-vacancy (NV) centers in diamond have ability to sense alternating-current (AC) magnetic fields with high spatial resolution. However, the frequency range of AC sensing…
Quantum diamond microscopy with optimized magnetic field sensitivity and sub-ms temporal resolution
Sangwon Oh, Seong-Joo Lee, Jeong Hyun Shim +2
Quantum diamond magnetometers using lock-in detection have successfully detected weak bio-magnetic fields from neurons, a live mammalian muscle, and a live mouse heart. This opens…
Optical dynamic nuclear polarization of C spins in diamond at a low field with multi-tone microwave irradiation
Vladimir Vladimirovish Kavtanyuk, Hyun Joon Lee, Sangwon Oh +2
Most of dynamic nuclear polarization (DNP) has been requiring helium cryogenics and strong magnetic fields for a high degree of polarization. In this work, we instead demonstrate a…
Multiplexed sensing of magnetic field and temperature in real time using a nitrogen vacancy spin ensemble in diamond
Jeong Hyun Shim, Seong-Joo Lee, Santosh Ghimire +7
Nitrogen-Vacancy (NV) spin in diamond is a versatile quantum sensor, being able to measure physical quantities such as magnetic field, electric field, temperature, and pressure. In…
Dynamic nuclear polarisation of liquids at one microtesla using circularly polarised RF with application to millimetre resolution MRI
Ingo Hilschenz, Jeong Hyun Shim, Sangwon Oh +4
Magnetic resonance imaging in ultra-low fields is often limited by mediocre signal-to-noise ratio hindering a higher resolution. Overhauser dynamic nuclear polarisation (O-DNP) usi…
Characterization of hyperfine interaction between single electron and single nuclear spins in diamond assisted by quantum beat from the nuclear spin
J. H. Shim, B. Nowak, I. Niemeyer +3
Precise characterization of a hyperfine interaction is a prerequisite for high fidelity manipulations of electron and nuclear spins belonging to a hybrid qubit register in diamond.…