Quantum-Dot Spins and Cavity QED

Author

Atature, Mete

Author_Institution

Inst. of Quantum Electron., Swiss Fed. Inst. of Technol., Zurich

fYear

2006

fDate

Oct. 2006

Firstpage

186

Lastpage

186

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/LEOS.2006.278954

Filename

4054118