5 papers
Coherence-Based Identification of Carbon-Based Spin Qubits in Hexagonal Boron Nitride from First Principles
Hyeonsu Kim, Jaewook Lee, Huijin Park +1
Carbon-related defects in hexagonal boron nitride are promising room-temperature single-spin qubits and quantum sensors, but their atomic structures remain largely unidentified. He…
A First-principles Computational Framework for Quantum Decoherence in Complex Diamond Spin Environments
Huijin Park, Ha-young Jeong, Hyeonsu Kim +6
Quantum decoherence induced by defects remains a major limitation for solid-state quantum technologies, yet predicting decoherence in realistic materials remains computationally ch…
Floquet analysis of coherence in periodically driven diamond NV ensemble systems
Cuong M. Nguyen, Uijin Ko, Seong-Joo Lee +3
High-density nitrogen-vacancy (NV) ensembles are promising platforms for solid-state quantum sensing, but their performance is limited by dipolar interactions and inhomogeneous dep…
Magnetic-field dependent VB- spin decoherence in hexagonal boron nitrides: A first-principles study
Jaewook Lee, Hyeonsu Kim, Huijin Park +1
The negatively charged boron vacancy (VB-) in h-BN is a spin-1 defect functioning as an optically addressable spin qubit in two-dimensional materials. A precise understanding of it…
Quantum decoherence of nitrogen-vacancy spin ensembles in a nitrogen spin bath in diamond under dynamical decoupling
Huijin Park, Mykyta Onizhuk, Eunsang Lee +5
The negatively charged nitrogen-vacancy (NV) center in diamond has emerged as a leading qubit platform for quantum technology applications. One of the key challenges for NV-based q…