Optical Detection and Manipulation of Single Electron Spin Coherence in a Semiconductor Quantum Dot - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optical Detection and Manipulation of Single Electron Spin Coherence in a Semiconductor Quantum Dot write by Maiken Sophia Høgh Mikkelsen. This book was released on 2009. Optical Detection and Manipulation of Single Electron Spin Coherence in a Semiconductor Quantum Dot available in PDF, EPUB and Kindle. As an alternative system for single spin control, few Mn-ion spins in a GaAs quantum well were measured using polarized photoluminescence. A new mechanism for optically addressing and controlling small numbers of magnetic ions in semiconductors is demonstrated without the need for magnetic fields or magnetic materials. The polarized Mn-spins precess in a transverse magnetic field enabling Hanle measurements of the spin lifetimes. The observed Mn-ion spin lifetimes reach promising timescales in the low doping limit, demonstrating that individual magnetic spins in a solid are useful systems for coherent manipulation of spin information.
Coherent Optical Manipulation of Electron Spin in Charged Semiconductor Quantum Dots
Coherent Optical Manipulation of Electron Spin in Charged Semiconductor Quantum Dots - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Coherent Optical Manipulation of Electron Spin in Charged Semiconductor Quantum Dots write by M. V. Gurudev Dutt. This book was released on 2004. Coherent Optical Manipulation of Electron Spin in Charged Semiconductor Quantum Dots available in PDF, EPUB and Kindle.
Optical Control and Detection of Spin Coherence in Semiconductor Nanostructures
Optical Control and Detection of Spin Coherence in Semiconductor Nanostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optical Control and Detection of Spin Coherence in Semiconductor Nanostructures write by Jesse A. Berezovsky. This book was released on 2007. Optical Control and Detection of Spin Coherence in Semiconductor Nanostructures available in PDF, EPUB and Kindle. Understanding the coherent dynamics of electron spins in quantum dots (QDs) is important for potential applications in solid-state, spin-based electronics and quantum information processing. Here, results are presented focusing on optical initialization, manipulation, and readout of spin coherence in various semiconductor nanostructures. Layered semiconductor nanocrystals are fabricated containing a spherical "quantum shell" in which electrons and holes are confined. As in a planar quantum well, the quantized energy levels and g-factors are found to depend on the shell thickness. Taking this idea a step further, nanocrystals with a concentric, tunnel-coupled core and shell are investigated. Based on the energy and g-factor dependences in these structures, spins can be selectively initialized into, and read out from, states in the core and shell. In contrast to these two ensemble measurements, we next turn to measurements of single electron spins in single QDs. First, we demonstrate the detection of a single electron spin in a QD using a nondestructive, continuously averaged magneto-optical Kerr rotation (KR) measurement. This continuous single QD KR technique is then extended into the time domain using pulsed pump and probe lasers, allowing the observation of the coherent evolution of an electron spin state with nanosecond temporal resolution. By sweeping the delay between the pump and probe, the dynamics of the spin in the QD are mapped out in time, providing a direct measurement of the electron g-factor and spin lifetime. Finally, this time-resolved single spin measurement is used to observe ultrafast coherent manipulation of the spin in the QD using an off-resonant optical pulse. Via the optical Stark effect, this optical pulse coherently rotates the spin state through angles up to pi radians, on picosecond timescales.
Spins in Optically Active Quantum Dots
Spins in Optically Active Quantum Dots - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Spins in Optically Active Quantum Dots write by Oliver Gywat. This book was released on 2010-02-01. Spins in Optically Active Quantum Dots available in PDF, EPUB and Kindle. Filling a gap in the literature, this up-to-date introduction to the field provides an overview of current experimental techniques, basic theoretical concepts, and sample fabrication methods. Following an introduction, this monograph deals with optically active quantum dots and their integration into electro-optical devices, before looking at the theory of quantum confined states and quantum dots interacting with the radiation field. Final chapters cover spin-spin interaction in quantum dots as well as spin and charge states, showing how to use single spins for break-through quantum computation. A conclusion and outlook round off the volume. The result is a primer providing the essential basic knowledge necessary for young researchers entering the field, as well as semiconductor and theoretical physicists, PhD students in physics and material sciences, electrical engineers and materials scientists.
Single Semiconductor Quantum Dots
Single Semiconductor Quantum Dots - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Single Semiconductor Quantum Dots write by Peter Michler. This book was released on 2009-06-13. Single Semiconductor Quantum Dots available in PDF, EPUB and Kindle. This book reviews recent advances in the field of semiconductor quantum dots via contributions from prominent researchers in the scientific community. Special focus is given to optical, quantum optical, and spin properties of single quantum dots.
