Optical Spectroscopy of Single InGaAs Self Assembled Quantum Dots

Optical Spectroscopy of Single InGaAs Self Assembled Quantum Dots PDF Author: Andrew Ebbens
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Languages : en
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Optical Spectroscopy of Single InGaAs Self Assembled Quantum Dots

Optical Spectroscopy of Single InGaAs Self Assembled Quantum Dots PDF Author: Andrew Ebbens
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Languages : en
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Optical Spectroscopy of Single Self-assembled InGaAs/GaAs Quantum Dots

Optical Spectroscopy of Single Self-assembled InGaAs/GaAs Quantum Dots PDF Author: Ruth Oulton
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Languages : en
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Optical Spectroscopy of InGaAs GaAs Self Assembled Quantum Dots

Optical Spectroscopy of InGaAs GaAs Self Assembled Quantum Dots PDF Author: Paul William Fry
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Languages : en
Pages : 0

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Self-Assembled InGaAs/GaAs Quantum Dots

Self-Assembled InGaAs/GaAs Quantum Dots PDF Author:
Publisher: Academic Press
ISBN: 0080864589
Category : Technology & Engineering
Languages : en
Pages : 385

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This volume is concerned with the crystal growth, optical properties, and optical device application of the self-formed quantum dot, which is one of the major current subjects in the semiconductor research field.The atom-like density of states in quantum dots is expected to drastically improve semiconductor laser performance, and to develop new optical devices. However, since the first theoretical prediction for its great possibilities was presented in 1982, due to the difficulty of their fabrication process. Recently, the advent of self-organized quantum dots has made it possible to apply the results in important optical devices, and further progress is expected in the near future.The authors, working for Fujitsu Laboratories, are leading this quantum-dot research field. In this volume, they describe the state of the art in the entire field, with particular emphasis on practical applications.

Self-Assembled Quantum Dots

Self-Assembled Quantum Dots PDF Author: Zhiming M Wang
Publisher: Springer Science & Business Media
ISBN: 0387741917
Category : Technology & Engineering
Languages : en
Pages : 470

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This multidisciplinary book provides up-to-date coverage of carrier and spin dynamics and energy transfer and structural interaction among nanostructures. Coverage also includes current device applications such as quantum dot lasers and detectors, as well as future applications to quantum information processing. The book will serve as a reference for anyone working with or planning to work with quantum dots.

Semiconductor Quantum Dots

Semiconductor Quantum Dots PDF Author: Yasuaki Masumoto
Publisher: Springer Science & Business Media
ISBN: 9783540428053
Category : Science
Languages : en
Pages : 520

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Growth of Self Organized Quantum Dots / J.-S. Lee / - Excitonic Structures and Optical Properties of Quantum Dots / Toshihide Takagahara / - Electron-Phonon Interactions in Semiconductor Quantum Dots / Toshihide Takagahara / - Micro-Imaging and Single Dot Spectroscopy of Self Assembled Quantum Dots / Mitsuru Sugisaki / - Persistent Spectral Hole Burning in Semiconductor Quantum Dots / Yasuaki Masumoto / - Dynamics of Carrier Relaxation in Self Assembled Quantum Dots / Ivan V. Ignatiev, Igor E. Kozin / - Resonant Two-Photon Spectroscopy of Quantum Dots / Alexander Baranov / - Homogeneous Width of Confined Excitons in Quantum Dots - Experimental / Yasuaki Masumoto / - Theory of Exciton Dephasing in Semiconductor Quantum Dots / Toshihide Takagahara / - Excitonic Optical Nonlinearity and Weakly Correlated Exciton-Pair States / Selvakumar V. Nair, Toshihide Takagahara / - Coulomb Effects in the Optical Spectra of Highly Excited Semiconductor Quantum Dots / Selvakumar V. Nair / - Device ...

Exploring Single Spin Physics in Self-Assembled Quantum Dots

Exploring Single Spin Physics in Self-Assembled Quantum Dots PDF Author: Selman Tunc Yilmaz
Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN: 9783838130200
Category :
Languages : en
Pages : 80

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In semiconductors, free charge carriers such as electrons and holes can be confined in all three dimensions in nanometer sized regions called quantum dots (QDs). QDs are convenient tools to gain detailed insight into the single photon-single emitter interaction and they serve as optical probes to study semiconductor physics at the nanoscale. The spin state (spin-up or spin-down) of a trapped QD electron or QD hole is a promising candidate as a computational unit for quantum information processing (QIP), the application of quantum mechanics to information processing. QIP promises immense computational power and secure communication. This work focusses on the optical spectroscopy of single InGaAs QDs and it addresses major challenges of using QD spins for QIP.

Optical and Electrical Properties of Single Self-Assembled Quantum Dots in Lateral Electric Fields

Optical and Electrical Properties of Single Self-Assembled Quantum Dots in Lateral Electric Fields PDF Author: Malte Huck
Publisher: diplom.de
ISBN: 3836644398
Category : Science
Languages : en
Pages : 137

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Inhaltsangabe:Abstract: Chapter 1: In this thesis we investigate the optical properties of self-assembled quantum dots exposed to a lateral electric field. As a result of the electric field the wave functions of electrons and holes inside the quantum dot are manipulated, which makes it possible to tune their energy levels and control the optical properties of the system. The possibility of tuning the emission energy of different few particle states using this method makes this system very promising for the use of a source of polarization entangled photons as discussed in the following sections. In Section 1.1 the concept of entangled states is introduced together with a brief historical overview. The possibility of using the exciton biexciton cascade of a self-assembled quantum dot for the generation of entangled photon pairs is presented in Section 1.2. Chapter 2: In this chapter we introduce the concept of quantum dots and demonstrate their optical emission properties. In Section 2.1 the quantum dot is introduced as a three-dimensional charge carrier trap. Several types of quantum dots are presented in an overview. In Section 2.2 we discuss the physical effects that occur on the way from bulk semiconductor material to the three-dimensional charge carrier confinement in the case of quantum dots. The growth of self-assembled quantum dot samples is the topic of Section 2.3, where the technique of molecular beam epitaxy is introduced (Section 2.3.1). This technique is used to grow the semiconductor quantum dots via heteroepitaxy in the Stranski-Krastanov growth mode (Section 2.3.2). Quantum dots are commonly referred to as artificial atoms due to their atomlike emission features. The origin for this expression is explained in Section 2.4 on the basis of the energetic structure of self-assembled quantum dots. The optical properties of quantum dots are discussed in Section 2.5, beginning with an introduction to the experimental setup that has been used to investigate the quantum dots during this thesis (Section 2.5.1). Different optical excitation modes are presented in Section 2.5.2 and in Section 2.5.3 we discuss, how to achieve a low enough quantum dot density on the analyzed samples. Section 2.5.4 deals with the photoluminescence of different exciton states and in Section 2.5.5 we present how these lines can be identified via power dependent measurements. Finally, the concept of initial charges in self-assembled quantum dots is presented in [...]

Optical Spectroscopy of Single Site-controlled Self-assembled Quantum Dots

Optical Spectroscopy of Single Site-controlled Self-assembled Quantum Dots PDF Author: Thai-Truong Du Tran
Publisher:
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Category :
Languages : en
Pages :

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Optical Spectroscopy of a Single Electron and Hole in InGaAs Quantum Dots

Optical Spectroscopy of a Single Electron and Hole in InGaAs Quantum Dots PDF Author: Gemma Fernandez Lopez
Publisher:
ISBN:
Category :
Languages : en
Pages : 57

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