523 citations · 657 across the 9 of their papers we have counts for
10 papers
Silicon-vacancy color centers in Si- and Si,P-doped nanodiamonds: thermal susceptibilities of photo luminescence band at 740 nm
Sumin Choi, Viatcheslav N. Agafonov, Valery A. Davydov +2
We have characterized thermal susceptibilities of the spectral band at 740 nm of silicon-vacancy (SiV) centers in Si- and Si,P-doped nanodiamonds over a temperature range from 295…
Ultrasensitive all-optical thermometry using nanodiamonds with high concentration of silicon-vacancy centres and multiparametric data analysis
Sumin Choi, Viatcheslav N. Agafonov, Valery A. Davydov +1
Nanoscale thermometry is paramount to study primary processes of heat transfer in solids and is a subject of hot debate in cell biology. Here we report ultrafast temperature sensin…
Enhancing Optical Readout from Diamond AFM Tips for Quantum Nanosensing
Sumin Choi, Victor Leong, Gandhi Alagappan +1
Color centers in diamond are promising candidates for quantum nanosensing applications. The efficient collection of the optical signal is the key to achieving high sensitivity and…
Varying temperature and silicon content in nanodiamond growth: effects on silicon-vacancy centers
Sumin Choi, Victor Leong, Valery A. Davydov +4
Nanodiamonds containing color centers open up many applications in quantum information processing, metrology, and quantum sensing. In particular, silicon vacancy (SiV) centers are…
A Metalens with Near-Unity Numerical Aperture
Ramon Paniagua-Dominguez, Ye Feng Yu, Egor Khaidarov +8
The numerical aperture (NA) of a lens determines its ability to focus light and its resolving capability. Having a large NA is a very desirable quality for applications requiring s…
Room temperature single photon emission from oxidized tungsten disulphide multilayers
Toan Trong Tran, Sumin Choi, John A. Scott +7
Two dimensional systems offer a unique platform to study light matter interaction at the nanoscale. In this work we report on robust quantum emitters fabricated by thermal oxidatio…