Quantum manipulation of single electron and hole spin localized in direct-gap monolayer semiconductors
single electron and hole, quantum dot, monolayer semiconductor, quantum manipulation
Physical Sciences (P)
RGC General Research Fund (GRF)
HKU Project Code
General Research Fund (GRF)
transition metal dichalcogenides MX2; investigate the coupling between the two valleys caused by various quantum dot confinements; identify the energy level schemes in various quantum dot configurations. 2. Explore quantum manipulation of internal degrees of freedom of electrons and holes in various quantum dot configurations by optical and electric controls; investigate various possibilities of realizing conditional quantum dynamics between spin index and valley index of an individual carrier; explore schemes to realize tunable coupling between adjacent quantum dots. 3. Formulate the coupling between the electron and hole spin with the lattice nuclei in monolayer MX2 quantum dot; investigate the spin decoherence of the electron and hole induced by the lattice nuclei; explore schemes of utilizing hyperfine coupling from the electron and hole to polarize the nuclear spins; explore the control of spin and valley of the electron and hole by utilizing the nuclear field.