Optical Control And Detection Of Spin Coherence In Semiconductor Nanostructures

Author : Jesse A. Berezovsky
Publisher : ProQuest
Page : 448 pages
File Size : 40,7 Mb
Release : 2007
Category : Electronic
ISBN : 0549363440

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Optical Control and Detection of Spin Coherence in Semiconductor Nanostructures by Jesse A. Berezovsky Pdf

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.

Author : Gabriela Slavcheva,Philippe Roussignol
Publisher : Springer Science & Business Media
Page : 338 pages
File Size : 54,9 Mb
Release : 2010-06-01
Category : Science
ISBN : 9783642124914

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Optical Generation and Control of Quantum Coherence in Semiconductor Nanostructures by Gabriela Slavcheva,Philippe Roussignol Pdf

The fundamental concept of quantum coherence plays a central role in quantum physics, cutting across disciplines of quantum optics, atomic and condensed matter physics. Quantum coherence represents a universal property of the quantum s- tems that applies both to light and matter thereby tying together materials and p- nomena. Moreover, the optical coherence can be transferred to the medium through the light-matter interactions. Since the early days of quantum mechanics there has been a desire to control dynamics of quantum systems. The generation and c- trol of quantum coherence in matter by optical means, in particular, represents a viable way to achieve this longstanding goal and semiconductor nanostructures are the most promising candidates for controllable quantum systems. Optical generation and control of coherent light-matter states in semiconductor quantum nanostructures is precisely the scope of the present book. Recently, there has been a great deal of interest in the subject of quantum coh- ence. We are currently witnessing parallel growth of activities in different physical systems that are all built around the central concept of manipulation of quantum coherence. The burgeoning activities in solid-state systems, and semiconductors in particular, have been strongly driven by the unprecedented control of coherence that previously has been demonstrated in quantum optics of atoms and molecules, and is now taking advantage of the remarkable advances in semiconductor fabrication technologies. A recent impetus to exploit the coherent quantum phenomena comes from the emergence of the quantum information paradigm.

Author : M. M. Glazov
Publisher : Oxford University Press
Page : 320 pages
File Size : 44,5 Mb
Release : 2018-09-05
Category : Science
ISBN : 9780192534217

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Electron & Nuclear Spin Dynamics in Semiconductor Nanostructures by M. M. Glazov Pdf

In recent years, the physics community has experienced a revival of interest in spin effects in solid state systems. On one hand, the solid state systems, particularly, semiconductors and semiconductor nanosystems, allow us to perform benchtop studies of quantum and relativistic phenomena. On the other hand, this interest is supported by the prospects of realizing spin-based electronics, where the electron or nuclear spins may play a role of quantum or classical information carriers. This book looks in detail at the physics of interacting systems of electron and nuclear spins in semiconductors, with particular emphasis on low-dimensional structures. These two spin systems naturally appear in practically all widespread semiconductor compounds. The hyperfine interaction of the charge carriers and nuclear spins is particularly prominent in nanosystems due to the localization of the charge carriers, and gives rise to spin exchange between these two systems and a whole range of beautiful and complex physics of manybody and nonlinear systems. As a result, understanding of the intertwined spin systems of electrons and nuclei is crucial for in-depth studying and controlling the spin phenomena in semiconductors. The book addresses a number of the most prominent effects taking place in semiconductor nanosystems including hyperfine interaction, nuclear magnetic resonance, dynamical nuclear polarization, spin-Faraday and spin-Kerr effects, processes of electron spin decoherence and relaxation, effects of electron spin precession mode-locking and frequency focussing, as well as fluctuations of electron and nuclear spins.

Author : Alexander Tartakovskii
Publisher : Cambridge University Press
Page : 377 pages
File Size : 42,7 Mb
Release : 2012-07-19
Category : Science
ISBN : 9781107012585

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Quantum Dots by Alexander Tartakovskii Pdf

A comprehensive review of cutting-edge solid state research, focusing on quantum dot nanostructures, for graduate students and researchers.

Author : Detlef Heitmann
Publisher : Springer Science & Business Media
Page : 434 pages
File Size : 54,8 Mb
Release : 2010-08-20
Category : Technology & Engineering
ISBN : 9783642105531

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Quantum Materials, Lateral Semiconductor Nanostructures, Hybrid Systems and Nanocrystals by Detlef Heitmann Pdf

Semiconductor nanostructures are ideal systems to tailor the physical properties via quantum effects, utilizing special growth techniques, self-assembling, wet chemical processes or lithographic tools in combination with tuneable external electric and magnetic fields. Such systems are called "Quantum Materials".The electronic, photonic, and phononic properties of these systems are governed by size quantization and discrete energy levels. The charging is controlled by the Coulomb blockade. The spin can be manipulated by the geometrical structure, external gates and by integrating hybrid ferromagnetic emitters.This book reviews sophisticated preparation methods for quantum materials based on III-V and II-VI semiconductors and a wide variety of experimental techniques for the investigation of these interesting systems. It highlights selected experiments and theoretical concepts and gives such a state-of-the-art overview about the wide field of physics and chemistry that can be studied in these systems.

Author : Anonim
Publisher : Unknown
Page : 994 pages
File Size : 50,8 Mb
Release : 2008
Category : Dissertations, Academic
ISBN : STANFORD:36105131549656

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Dissertation Abstracts International by Anonim Pdf

Author : Michael E. Flatté,Ionel Tifrea
Publisher : Springer Science & Business Media
Page : 244 pages
File Size : 50,6 Mb
Release : 2007-05-30
Category : Science
ISBN : 9781402061356

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Manipulating Quantum Coherence in Solid State Systems by Michael E. Flatté,Ionel Tifrea Pdf

This book features the proceedings of the NATO Advanced Study Institute "Manipulating Quantum Coherence in Solid State Systems", held in Cluj-Napoca, Romania, August 2005, which presented a fundamental introduction to solid-state approaches to achieving quantum computation. This proceedings volume describes the properties of quantum coherence in semiconductor spin-based systems and the behavior of quantum coherence in superconducting systems.

Author : Anonim
Publisher : Unknown
Page : 264 pages
File Size : 51,6 Mb
Release : 2003
Category : Compound semiconductors
ISBN : UOM:39015047940781

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Proceedings of the IEEE ... International Symposium on Compound Semiconductors by Anonim Pdf

Author : David D. Awschalom,Robert A. Buhrman,James M. Daughton,Stephan von Molnár,Michael L. Roukes
Publisher : Springer Science & Business Media
Page : 216 pages
File Size : 40,7 Mb
Release : 2013-06-29
Category : Science
ISBN : 9789401705325

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Spin Electronics by David D. Awschalom,Robert A. Buhrman,James M. Daughton,Stephan von Molnár,Michael L. Roukes Pdf

The history of scientific research and technological development is replete with examples of breakthroughs that have advanced the frontiers of knowledge, but seldom does it record events that constitute paradigm shifts in broad areas of intellectual pursuit. One notable exception, however, is that of spin electronics (also called spintronics, magnetoelectronics or magnetronics), wherein information is carried by electron spin in addition to, or in place of, electron charge. It is now well established in scientific and engineering communities that Moore's Law, having been an excellent predictor of integrated circuit density and computer performance since the 1970s, now faces great challenges as the scale of electronic devices has been reduced to the level where quantum effects become significant factors in device operation. Electron spin is one such effect that offers the opportunity to continue the gains predicted by Moore's Law, by taking advantage of the confluence of magnetics and semiconductor electronics in the newly emerging discipline of spin electronics. From a fundamental viewpoine, spin-polarization transport in a material occurs when there is an imbalance of spin populations at the Fermi energy. In ferromagnetic metals this imbalance results from a shift in the energy states available to spin-up and spin-down electrons. In practical applications, a ferromagnetic metal may be used as a source of spin-polarized electronics to be injected into a semiconductor, a superconductor or a normal metal, or to tunnel through an insulating barrier.

Author : Anonim
Publisher : Newnes
Page : 3572 pages
File Size : 49,8 Mb
Release : 2011-01-28
Category : Science
ISBN : 9780080932286

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Comprehensive Semiconductor Science and Technology by Anonim Pdf

Semiconductors are at the heart of modern living. Almost everything we do, be it work, travel, communication, or entertainment, all depend on some feature of semiconductor technology. Comprehensive Semiconductor Science and Technology, Six Volume Set captures the breadth of this important field, and presents it in a single source to the large audience who study, make, and exploit semiconductors. Previous attempts at this achievement have been abbreviated, and have omitted important topics. Written and Edited by a truly international team of experts, this work delivers an objective yet cohesive global review of the semiconductor world. The work is divided into three sections. The first section is concerned with the fundamental physics of semiconductors, showing how the electronic features and the lattice dynamics change drastically when systems vary from bulk to a low-dimensional structure and further to a nanometer size. Throughout this section there is an emphasis on the full understanding of the underlying physics. The second section deals largely with the transformation of the conceptual framework of solid state physics into devices and systems which require the growth of extremely high purity, nearly defect-free bulk and epitaxial materials. The last section is devoted to exploitation of the knowledge described in the previous sections to highlight the spectrum of devices we see all around us. Provides a comprehensive global picture of the semiconductor world Each of the work's three sections presents a complete description of one aspect of the whole Written and Edited by a truly international team of experts

Author : M. V. Gurudev Dutt
Publisher : Unknown
Page : 396 pages
File Size : 51,6 Mb
Release : 2004
Category : Electronic
ISBN : UOM:39015059186190

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Coherent Optical Manipulation of Electron Spin in Charged Semiconductor Quantum Dots by M. V. Gurudev Dutt Pdf

Author : Baldassare Di Bartolo,John Collins,Luciano Silvestri
Publisher : Springer
Page : 586 pages
File Size : 51,6 Mb
Release : 2014-10-06
Category : Science
ISBN : 9789401791335

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Nano-Structures for Optics and Photonics by Baldassare Di Bartolo,John Collins,Luciano Silvestri Pdf

The contributions in this volume were presented at a NATO Advanced Study Institute held in Erice, Italy, 4-19 July 2013. Many aspects of important research into nanophotonics, plasmonics, semiconductor materials and devices, instrumentation for bio sensing to name just a few, are covered in depth in this volume. The growing connection between optics and electronics, due to the increasing important role plaid by semiconductor materials and devices, find their expression in the term photonics, which also reflects the importance of the photon aspect of light in the description of the performance of several optical systems. Nano-structures have unique capabilities that allow the enhanced performance of processes of interest in optical and photonic devices. In particular these structures permit the nanoscale manipulation of photons, electrons and atoms; they represent a very hot topic of research and are relevant to many devices and applications. The various subjects bridge over the disciplines of physics, biology and chemistry, making this volume of interest to people working in these fields. The emphasis is on the principles behind each technique and on examining the full potential of each technique.

Author : Matthew Laudon
Publisher : Unknown
Page : 550 pages
File Size : 49,7 Mb
Release : 2002
Category : Technology & Engineering
ISBN : UOM:39015059579048

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2002 International Conference on Computational Nanoscience and Nanotechnology by Matthew Laudon Pdf

The worlds most comprehensive and up-to-date collection of Nanotechnology and Nanoscience technical papers. Technical Proceedings of the Nanotech 2002 and the International Conference on Computational Nanoscience and Nanotechnology. Nanotech Vol. 1: Sequence and Biological Structure, Computer Aided Drug Design, Biological Conduction Processes, Biotechnology, Micro and Nano Fluidic Systems, Soft Condensed Matter, Extedned-Scale Atomistics, Quantum Effects, Quantum Devices, Spintronics, Mechanical Properties at the Nanoscale, Molecular and Nano Electronics, Condensed Matter Phenomena, Process Modeling, Nanotechnology, Materials and Nanostructures Studies, Nano Particles and Molecules. Papers taken from the 2002 Nanotechnology Conference and Trade Show, San Juan, Puerto Rico, April. 2002.

Author : Eougenious L. Ivchenko
Publisher : Alpha Science Int'l Ltd.
Page : 444 pages
File Size : 42,6 Mb
Release : 2005
Category : Science
ISBN : 1842651501

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Optical Spectroscopy of Semiconductor Nanostructures by Eougenious L. Ivchenko Pdf

This volume looks at optical spectroscopy of semiconductir nanostructures. Some of the topics it covers include: kingdom of nanostructures; quantum confinement in low-dimensional systems; resonant light reflection; and transmission and absorption.

Author : Mohamed Henini
Publisher : Elsevier
Page : 864 pages
File Size : 45,8 Mb
Release : 2011-07-28
Category : Technology & Engineering
ISBN : 0080560474

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Handbook of Self Assembled Semiconductor Nanostructures for Novel Devices in Photonics and Electronics by Mohamed Henini Pdf

The self-assembled nanostructured materials described in this book offer a number of advantages over conventional material technologies in a wide range of sectors. World leaders in the field of self-organisation of nanostructures review the current status of research and development in the field, and give an account of the formation, properties, and self-organisation of semiconductor nanostructures. Chapters on structural, electronic and optical properties, and devices based on self-organised nanostructures are also included. Future research work on self-assembled nanostructures will connect diverse areas of material science, physics, chemistry, electronics and optoelectronics. This book will provide an excellent starting point for workers entering the field and a useful reference to the nanostructured materials research community. It will be useful to any scientist who is involved in nanotechnology and those wishing to gain a view of what is possible with modern fabrication technology. Mohamed Henini is a Professor of Applied Physics at the University of Nottingham. He has authored and co-authored over 750 papers in international journals and conference proceedings and is the founder of two international conferences. He is the Editor-in-Chief of Microelectronics Journal and has edited three previous Elsevier books. Contributors are world leaders in the field Brings together all the factors which are essential in self-organisation of quantum nanostructures Reviews the current status of research and development in self-organised nanostructured materials Provides a ready source of information on a wide range of topics Useful to any scientist who is involved in nanotechnology Excellent starting point for workers entering the field Serves as an excellent reference manual