Quantum manipulation of single electron and hole spin localized in direct-gap monolayer semiconductors


Grant Data
Project Title
Quantum manipulation of single electron and hole spin localized in direct-gap monolayer semiconductors
Duration
36
Start Date
2013-12-01
Completion Date
2016-11-30
Amount
592987
Conference Title
Presentation Title
Keywords
single electron and hole, quantum dot, monolayer semiconductor, quantum manipulation
Discipline
Physics
Panel
Physical Sciences (P)
Sponsor
RGC General Research Fund (GRF)
HKU Project Code
HKU 705513P
Grant Type
General Research Fund (GRF)
Funding Year
2013/2014
Status
On-going
Objectives
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.