Title :
Quantum-Dot Spins and Cavity QED
Author_Institution :
Inst. of Quantum Electron., Swiss Fed. Inst. of Technol., Zurich
Abstract :
Quantum dots are semiconductor structures that confine electron and hole motion in all three dimensions. A single electron spin trapped in a quantum dot is also a promising semiconductor-based system to study various quantum optical phenomena. As a key step towards manipulation of a confined spin, we have recently demonstrated all-optical state preparation of a quantum-dot electron spin with a fidelity exceeding 99.8% via optical pumping. The author will present a detailed analysis of optical pumping, hyperfine-induced spin-flip, and co-tunneling rates in this system under different conditions. The author will further discuss challenges and solutions to incorporating spins into photonic crystal nanocavities
Keywords :
electron traps; optical pumping; photonic crystals; quantum electrodynamics; quantum optics; semiconductor quantum dots; tunnelling; all-optical state preparation; cavity QED; co-tunneling rates; confined spin manipulation; electron traps; electron-hole motion; fidelity; hyperfine-induced spin-flip; optical pumping; photonic crystal nanocavities; quantum optical phenomena; quantum-dot electron spins; semiconductor structures; semiconductor-based system; single electron spin; Charge carrier processes; Electron optics; Electron traps; Information processing; Kelvin; Optical pumping; Optical scattering; Quantum dots; Reservoirs; Trions;
Conference_Titel :
Lasers and Electro-Optics Society, 2006. LEOS 2006. 19th Annual Meeting of the IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-9555-7
Electronic_ISBN :
0-7803-9555-7
DOI :
10.1109/LEOS.2006.278954
