Title :
Coherent optical control a single hole spin in a quantum dot
Author :
Godden, T.M. ; Quilter, J.H. ; Ramsay, A.J. ; Boyle, S.J. ; Luxmoore, I.J. ; Puebla-Nunez, J. ; Fox, A.M. ; Skolnick, M.S. ; Wu, Yanwen ; Brereton, P.
Author_Institution :
Dept. of Phys. & Astron., Univ. of Sheffield, Sheffield, UK
Abstract :
We report coherent optical control of a single hole spin confined to an InAs/GaAs quantum dot. The hole spin was initialized by fast dissociation of a spin-polarized electron-hole pair, and controlled by combining coherent rotations about two perpendicular axes: Larmor precession about an external Voigt-geometry magnetic field, and optical rotation caused by the geometric phase shift induced by a picosecond laser pulse.
Keywords :
III-V semiconductors; electron pairs; gallium arsenide; high-speed optical techniques; indium compounds; magneto-optical effects; optical control; optical rotation; photodissociation; semiconductor quantum dots; InAs-GaAs; Larmor precession; coherent optical control; coherent rotations; external Voigt-geometry magnetic field; geometric phase shift; optical rotation; picosecond laser pulse; quantum dot; single hole spin; spin-polarized electron-hole pair dissociation; Gallium arsenide; Laser excitation; Magnetic separation; Magnetic tunneling; Optical control; Optical pulses; Quantum dot lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
