Quantum Information with Solid-State Defect Centers

Solid-state defect centers, like nitrogen-vacancy centers in diamonds, are promising candidates for quantum information processing and quantum sensing. The quantum coherence of the defect center spins is an essential parameter, which determines the number of logic operations available in quantum information processing and the sensitivity in quantum sensing. We are interested in the theory of spin decoherence, the method of controlling spins to protect the coherence, and various applications such as using solid-state defect centers to implement single-molecular NMR.

Decoherence of central spins

We studied central spin decoherence problems in various solid-state systems, including nitrogen-vacancy centers in diamond, di-vacancy centers in silicon-carbide, rare-earth atoms in YAG/YSO crystals, and radical electrons in molecular crystal.

Atomic-scale sensing with defect centers