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Author : Thomas Galley
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (931 download)
Download or read book Dynamics of Quantum Dots in Optical Cavities written by Thomas Galley and published by . This book was released on 2014 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kristian Høeg Madsen
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783845421728
Total Pages : 92 pages
Book Rating : 4.4/5 (217 download)
Download or read book Dynamics of Quantum Dots in Micropillar Cavities written by Kristian Høeg Madsen and published by LAP Lambert Academic Publishing. This book was released on 2011-09 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis the interaction between a single quantum dot and a cavity is investigated. Quantum dots embedded in a micropillar cavity are investigated by measuring the spectra, and by performing time-resolved measurements. The enhancement of the spontaneous decay of the quantum dot is measured to 18.9 with a resonant lifetime of 28.1 ps under the assumption of an exponential decay. A model is constructed with measurable parameters, and the calculated decay curves are not exponential. As a result the mean decay rate, which coincides with the exponential rate for an exponential decay, is calculated for the measured rates. A large deviation is seen, with an enhancement of the mean decay rate of 9.1 with a resonant lifetime of 56.5 ps. The non-exponential decay of the quantum dot is caused by non- Markovian processes in the dot-cavity interaction. Furthermore, the second order coherence is measured to determine the quality of the single-photon emission, and two-photon interference measurements are likewise performed. These measurements show an indistinguishability of 48%. Finally, cavity-assisted resonant excitation of a quantum dot with another quantum dot is demonstrated.
Author : Peter Michler
Publisher : Springer Science & Business Media
ISBN 13 : 9783540140221
Total Pages : 370 pages
Book Rating : 4.1/5 (42 download)
Download or read book Single Quantum Dots written by Peter Michler and published by Springer Science & Business Media. This book was released on 2003-12-09 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special focus is given to the optical and electronic properties of single quantum dots due to their potential applications in devices operating with single electrons and/or single photons. This includes quantum dots in electric and magnetic fields, cavity-quantum electrodynamics, nonclassical light generation, and coherent optical control of excitons.
Author : Ortwin Hess
Publisher : World Scientific
ISBN 13 : 1848165226
Total Pages : 182 pages
Book Rating : 4.8/5 (481 download)
Download or read book Photonics of Quantum-dot Nanomaterials and Devices written by Ortwin Hess and published by World Scientific. This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Introduction to photonic quantum dot nanomaterials and devices. 1.1. Physical properties of quantum dots. 1.2. Active semiconductor gain media. 1.3. Quantum dot lasers. 1.4. Laser cavities -- 2. Theory of quantum dot light-matter dynamics. 2.1. Rate equations. 2.2. Maxwell-Bloch equations. 2.3. Quantum luminescence equations. 2.4. Quantum theoretical description -- 3. Light meets matter I: microscopic carrier effect. 3.1. Dynamics in the active charge carrier plasma. 3.2. Dynamic level hole burning. 3.3. Ultrashort nonlinear gain and index dynamics. 3.4. Conclusion -- 4. Light meets matter II: mesoscopic space-time dynamics. 4.1. Introduction: transverse and longitudinal mode dynamics. 4.2. Influence of the transverse degree of freedom and nano-structuring on nearfield dynamics and spectra. 4.3. Longitudinal modes. 4.4. Coupled space-time dynamics. 4.5. Conclusion -- 5. Performance and characterisation: properties on large time and length scales. 5.1. Introduction. 5.2. Spatial and spectral beam quality. 5.3. Dynamic amplitude phase coupling. 5.4. Conclusion -- 6. Nonlinear pulse propagation in semiconductor quantum dot lasers. 6.1. Dynamic shaping of short optical pulses. 6.2. Nonlinear femtosecond dynamics. 6.3. Conclusion -- 7. High-speed dynamics. 7.1. Mode-locking in multi-section quantum dot lasers. 7.2. Dependence of pulse duration on injection current, bias voltage and device geometry. 7.3. Radio frequency spectra of the emitted light. 7.4. Short-pulse optimisation. 7.5. Conclusion -- 8. Quantum dot random lasers. 8.1. Spatially inhomogeneous semiconductor quantum dot ensembles. 8.2. Coherence properties. 8.3. Random lasing in semiconductor quantum dot ensembles. 8.4. Conclusion -- 9. Coherence properties of quantum dot micro-cavity lasers. 9.1. Introduction. 9.2. Radial signal propagation and coherence trapping. 9.3. Influence of disorder. 9.4. Conclusions
Author : Kristian Høeg Madsen
Publisher :
ISBN 13 : 9788793089068
Total Pages : pages
Book Rating : 4.0/5 (89 download)
Download or read book Coherent Dynamics of Quantum Dots in Photonic-crystal Cavities written by Kristian Høeg Madsen and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Allcock
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)
Download or read book Exciton-photon Dynamics in Quantum Dots Embedded in Photonic Cavities written by Thomas Allcock and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Benjamin Lingnau
Publisher : Springer
ISBN 13 : 3319258052
Total Pages : 203 pages
Book Rating : 4.3/5 (192 download)
Download or read book Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices written by Benjamin Lingnau and published by Springer. This book was released on 2015-12-14 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis sheds light on the unique dynamics of optoelectronic devices based on semiconductor quantum-dots. The complex scattering processes involved in filling the optically active quantum-dot states and the presence of charge-carrier nonequilibrium conditions are identified as sources for the distinct dynamical behavior of quantum-dot based devices. Comprehensive theoretical models, which allow for an accurate description of such devices, are presented and applied to recent experimental observations. The low sensitivity of quantum-dot lasers to optical perturbations is directly attributed to their unique charge-carrier dynamics and amplitude-phase-coupling, which is found not to be accurately described by conventional approaches. The potential of quantum-dot semiconductor optical amplifiers for novel applications such as simultaneous multi-state amplification, ultra-wide wavelength conversion, and coherent pulse shaping is investigated. The scattering mechanisms and the unique electronic structure of semiconductor quantum-dots are found to make such devices prime candidates for the implementation of next-generation optoelectronic applications, which could significantly simplify optical telecommunication networks and open up novel high-speed data transmission schemes.
Author : Zhiming M Wang
Publisher : Springer Science & Business Media
ISBN 13 : 0387741917
Total Pages : 470 pages
Book Rating : 4.3/5 (877 download)
Download or read book Self-Assembled Quantum Dots written by Zhiming M Wang and published by Springer Science & Business Media. This book was released on 2007-11-29 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Clément William Tendaï Jarlov
Publisher :
ISBN 13 :
Total Pages : 201 pages
Book Rating : 4.:/5 (956 download)
Download or read book Cavity Quantum Electrodynamics with Systems of Site-controlled Quantum Dots and Photonic Crystal Cavities written by Clément William Tendaï Jarlov and published by . This book was released on 2016 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mots-clés de l'auteur: cavity quantum electrodynamics ; nanophotonic ; semiconductor ; quantum dot ; optical cavity ; photonic crystal ; Jaynes-Cummings model ; Purcell effect ; decoherence ; dephasing ; phonon ; optical supermode.
Author : Peter Michler
Publisher : Springer Science & Business Media
ISBN 13 : 3540874461
Total Pages : 390 pages
Book Rating : 4.5/5 (48 download)
Download or read book Single Semiconductor Quantum Dots written by Peter Michler and published by Springer Science & Business Media. This book was released on 2009-06-13 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Andreas Muller
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.:/5 (173 download)
Download or read book Resonance Fluorescence and Cavity Quantum Electrodynamics with Quantum Dots written by Andreas Muller and published by . This book was released on 2007 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Next-generation information technology is expected to rely on discrete two-state quantum systems that can deterministically emit single photons. Quantum dots are mesoscopic (~10,000 atoms large) semiconductor islands grown in a host crystal of larger band-gap that make well-defined two-level quantum systems and are very attractive due to stability, record coherence times, and the possibility of integrating them into larger structures, such as optical microcavities. This work presents experimental progress towards understanding the coherent optical processes that occur in single quantum dots, particularly such phenomena that might be one day utilized for quantum communication applications. High resolution low temperature optical spectroscopy is used in conjunction with first order (amplitude) and second-order (intensity) correlation measurements of the emitted field. A novel technique is introduced that is capable of harvesting the fluorescence of single dots at the same frequency as the laser, previously impossible due to insurmountable scattering. This technique enables the observation, for the first time, of single quantum dot resonance fluorescence, in both the weak and strong excitation regimes, which forms the basis for deterministic generation of single photons. Guided by the rich theoretical description available from quantum optics with atoms we obtain insight into the complex dynamics of this driven system. Quantum dots confined to novel optical microcavities were further investigated using micro photoluminescence. An optical microcavity properly coupled to a two-level system can profoundly modify its emission characteristics via quantum electrodynamical effects, which are highly attractive for single photon sources. The all-epitaxial structures we probe are distinguished by a bulk morphology that overcomes the fragility problems of existing approaches, and provides high quality factors as well as small mode volumes. Lasing is obtained with larger strucutres. Additionally, isolation of individual dots is further realized in smaller cavities and the Purcell effect observed in time-resolved photon counting experiments.
Author : Gerasimos Konstantatos
Publisher : Cambridge University Press
ISBN 13 : 0521198267
Total Pages : 329 pages
Book Rating : 4.5/5 (211 download)
Download or read book Colloidal Quantum Dot Optoelectronics and Photovoltaics written by Gerasimos Konstantatos and published by Cambridge University Press. This book was released on 2013-11-07 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures the most up-to-date research in the field, written in an accessible style by the world's leading experts.
Author : Jeremy Adcock
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (931 download)
Download or read book Dynamics of a Single Quantum Dot in Optical Microcavities written by Jeremy Adcock and published by . This book was released on 2014 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Michler
Publisher : Springer
ISBN 13 : 9783662307861
Total Pages : 352 pages
Book Rating : 4.3/5 (78 download)
Download or read book Single Quantum Dots written by Peter Michler and published by Springer. This book was released on 2014-10-08 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special focus is given to the optical and electronic properties of single quantum dots due to their potential applications in devices operating with single electrons and/or single photons. This includes quantum dots in electric and magnetic fields, cavity-quantum electrodynamics, nonclassical light generation, and coherent optical control of excitons.
Author : Christian Otto
Publisher : Springer Science & Business Media
ISBN 13 : 3319037862
Total Pages : 301 pages
Book Rating : 4.3/5 (19 download)
Download or read book Dynamics of Quantum Dot Lasers written by Christian Otto and published by Springer Science & Business Media. This book was released on 2014-01-21 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with the dynamics of state-of-the-art nanophotonic semiconductor structures, providing essential information on fundamental aspects of nonlinear dynamical systems on the one hand, and technological applications in modern telecommunication on the other. Three different complex laser structures are considered in detail: (i) a quantum-dot-based semiconductor laser under optical injection from a master laser, (ii) a quantum-dot laser with optical feedback from an external resonator, and (iii) a passively mode-locked quantum-well semiconductor laser with saturable absorber under optical feedback from an external resonator. Using a broad spectrum of methods, both numerical and analytical, this work achieves new fundamental insights into the interplay of microscopically based nonlinear laser dynamics and optical perturbations by delayed feedback and injection.
Author : Shiyuan Zhao
Publisher : Springer Nature
ISBN 13 : 3031668189
Total Pages : 245 pages
Book Rating : 4.0/5 (316 download)
Download or read book Noise, Dynamics and Squeezed Light in Quantum Dot and Interband Cascade Lasers written by Shiyuan Zhao and published by Springer Nature. This book was released on with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joshua Hendrickson
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (752 download)
Download or read book Cavity Quantum Electrodynamics with Quantum Dot - Photonic Crystal Nanocavities written by Joshua Hendrickson and published by . This book was released on 2010 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: High quality factor, small mode volume photonic crystal cavities and single emitter quantum dots are the topic of this dissertation. They are studied as both a combined system with InAs quantum dots grown in the center of a 2D GaAs photonic crystal slab nanocavity as well as individually. The individual studies are concerned with passive 1D silicon photonic crystal nanobeam cavities and deterministic, site-selectively grown arrays of InAs quantum dots. For the combined system, strong light matter coupling in a quantum dot photonic crystal slab nanocavity is discussed. Vacuum Rabi splitting is seen when the interaction strength exceeds the dissipative processes of the coupled system. In order to increase the probability of a spectral matching between cavity modes and quantum dot transitions, a technique for condensing an inert gas onto a sample is used. This can lead to a spectral tuning of up to 4 nm of the cavity mode with minimal change in the cavity quality factor while maintaining cryogenic temperatures down to 4 K. The effect of a large density of quantum dots within a quantum dot photonic crystal slab nanocavity is also addressed. Gain and absorption effects are found to occur, changing the cavity emission linewidth from that of its intrinsic value, as well as lasing with a low number of quantum dots and with high spontaneous emission coupling factors. Additionally, methods for improving the quality factor of GaAs photonic crystal cavities and better understanding different loss mechanisms are discussed. In the individual studies, the site-selective growth of InAs quantum dots on pre-structured GaAs wafers is shown as a promising method for the eventual deterministic fabrication of photonic crystal cavities to single quantum dots. An in-situ annealing step is used to reduce quantum dot density, helping ensure that dots are not grown in unwanted locations. Given silicon's potential for achieving higher quality factors than its GaAs counterpart, a study of 1D passive silicon photonic crystal nanobeam cavities is carried out. Transmission through a coupled microfiber is used to measure quality factors of the cavities and compared with that of a crossed polarized resonant scattering measurement.
