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Resonance Fluorescence And Cavity Quantum Electrodynamics With Quantum Dots
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Book Synopsis Resonance Fluorescence and Cavity Quantum Electrodynamics with Quantum Dots by : Andreas Muller
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.
Book Synopsis Quantum Dots for Quantum Information Technologies by : Peter Michler
Download or read book Quantum Dots for Quantum Information Technologies written by Peter Michler and published by Springer. This book was released on 2017-06-01 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the most recent developments in quantum dot spin physics and the generation of deterministic superior non-classical light states with quantum dots. In particular, it addresses single quantum dot spin manipulation, spin-photon entanglement and the generation of single-photon and entangled photon pair states with nearly ideal properties. The role of semiconductor microcavities, nanophotonic interfaces as well as quantum photonic integrated circuits is emphasized. The latest theoretical and experimental studies of phonon-dressed light matter interaction, single-dot lasing and resonance fluorescence in QD cavity systems are also provided. The book is written by the leading experts in the field.
Book Synopsis Solid State Cavity Quantum Electrodynamics with Quantum Dots Coupled to Photonic Crystal Cavities by : Arka Majumdar
Download or read book Solid State Cavity Quantum Electrodynamics with Quantum Dots Coupled to Photonic Crystal Cavities written by Arka Majumdar and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dots (QDs) coupled to optical cavities constitute a scalable, robust, on-chip, semiconductor platform for probing fundamental cavity quantum electrodynamics. Very strong interaction between light and matter can be achieved in this system as a result of the eld localization inside sub-cubic wavelength volumes leading to vacuum Rabi frequencies in the range of 10s of GHz. Such strong light-matter interaction produces an optical nonlinearity that is present even at single-photon level and is tunable at a very fast time-scale. This enables one to go beyond fundamental cavity quantum electrodynamics (CQED) studies and to employ such e ects for building practical information processing devices. My PhD work has focused on both fundamental physics of the coupled QD-nanocavity system, as well as on several proof-of-principle devices for low-power optical information processing based on this platform. We have demonstrated the e ects of photon blockade and photon-induced tunneling, which con rm the quantum nature of the coupled dot-cavity system. Using these e ects and the photon correlation measurements of light transmitted through the dot-cavity system, we identify the rst and second order energy manifolds of the Jaynes-Cummings ladder describing the strong coupling between the quantum dot and the cavity eld, and propose a new way to generate multi-Fock states with high purity. In addition, the interaction of the quantum dot with its semiconductor environment gives rise to novel phenomena unique to a solid state cavity QED system, namely phonon-mediated o -resonant dot-cavity coupling. We have employed this effect to perform cavity-assisted resonant quantum dot spectroscopy, which allows us to resolve frequency features far below the limit of a conventional spectrometer. Finally, the applications of such a coupled dot-cavity system in optical information processing including ultrafast, low power all-optical switching and electro-optic modulation are explored. With the light-matter interactions controlled at the most fundamental level, the nano-photonic devices we implemented on this platform operate at extremely low control powers and could achieve switching speeds potentially exceeding 10 GHz.
Book Synopsis Single Quantum Dots by : Peter Michler
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.
Book Synopsis Cavity Quantum Electrodynamics with Quantum Dot - Photonic Crystal Nanocavities by : Joshua Hendrickson
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.
Book Synopsis Quantum Dots by : Alexander Tartakovskii
Download or read book Quantum Dots written by Alexander Tartakovskii and published by Cambridge University Press. This book was released on 2012-07-19 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of cutting-edge solid state research, focusing on quantum dot nanostructures, for graduate students and researchers.
Book Synopsis Single Quantum Dots by : Peter Michler
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.
Book Synopsis Cavity Quantum Electrodynamics with Quantum Dots in Microcavities by :
Download or read book Cavity Quantum Electrodynamics with Quantum Dots in Microcavities written by and published by . This book was released on 2015 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cavity Quantum Electrodynamics with Quantum Dots in Microcavities by : Jan Gudat
Download or read book Cavity Quantum Electrodynamics with Quantum Dots in Microcavities written by Jan Gudat and published by . This book was released on 2012 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resonance Fluorescence of Self-assembled Quantum Dots by : Ted Silva Santana
Download or read book Resonance Fluorescence of Self-assembled Quantum Dots written by Ted Silva Santana and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resonance Fluorescence and Electron Spin in Semiconductor Quantum Dots by : Yong Zhao
Download or read book Resonance Fluorescence and Electron Spin in Semiconductor Quantum Dots written by Yong Zhao and published by . This book was released on 2009 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulsed Resonance Fluorescence and Two-photon Interference Using Remote Quantum Dots by : Jonas Heinrich Weber
Download or read book Pulsed Resonance Fluorescence and Two-photon Interference Using Remote Quantum Dots written by Jonas Heinrich Weber and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atom-Photon Interactions by : Claude Cohen-Tannoudji
Download or read book Atom-Photon Interactions written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 1998-03-23 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atom-Photon Interactions: Basic Processes and Applications allows the reader to master various aspects of the physics of the interaction between light and matter. It is devoted to the study of the interactions between photons and atoms in atomic and molecular physics, quantum optics, and laser physics. The elementary processes in which photons are emitted, absorbed, scattered, or exchanged between atoms are treated in detail and described using diagrammatic representation. The book presents different theoretical approaches, including: Perturbative methods The resolvent method Use of the master equation The Langevin equation The optical Bloch equations The dressed-atom approach Each method is presented in a self-contained manner so that it may be studied independently. Many applications of these approaches to simple and important physical phenomena are given to illustrate the potential and limitations of each method.
Book Synopsis Towards Violation of Classical Inequalities Using Quantum Dot Resonance Fluorescence by : Manoj Peiris
Download or read book Towards Violation of Classical Inequalities Using Quantum Dot Resonance Fluorescence written by Manoj Peiris and published by . This book was released on 2017 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-assembled semiconductor quantum dots have attracted considerable interest recently, ranging from fundamental studies of quantum optics to advanced applications in the field of quantum information science. With their atom-like properties, quantum dot based nanophotonic devices may also substantially contribute to the development of quantum computers. This work presents experimental progress towards the understanding of light-matter interactions that occur beyond well-understood monochromatic resonant light scattering processes in semiconductor quantum dots. First, we report measurements of resonance fluorescence under bichromatic laser excitation. With the inclusion of a second laser, both first-order and second-order correlation functions are substantially altered. Under these conditions, the scattered light exhibits a rich spectrum containing many spectral features that lead to a range of nonlinear multiphoton dynamics. These observations are discussed and compared with a theoretical model. Second, we investigated the light scattered by a quantum dot in the presence of spectral filtering. By scanning the tunable filters placed in front of each detector of a Hanbury-Brown and Twiss setup and recording coincidence measurements, a \two-photon spectrum" has been experimentally reconstructed for the first time. The two-photon spectrum contains a wealth of information about the cascaded emission involved in the scattering process, such as transitions occurring via virtual intermediate states. Our measurements also reveal that the scattered frequency-filtered light from a quantum dot violates the Cauchy-Schwarz inequality. Finally, Franson-interferometry has been performed using spectrally filtered light from quantum dot resonance fluorescence. Visibilities exceeding the classical limit were demonstrated by using a pair of folded Mach-Zehnder interferometers, paving the way for producing single time-energy entangled photon pairs that could violate Bell's inequalities.
Book Synopsis Exploring Single Spin Physics in Self-assembled Quantum Dots Using Resonance Fluorescence by : Selman Tunc Yilmaz
Download or read book Exploring Single Spin Physics in Self-assembled Quantum Dots Using Resonance Fluorescence written by Selman Tunc Yilmaz and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory for Strongly Coupled Quantum Dot Cavity Quantum Electrodynamics by : Alexander Carmele
Download or read book Theory for Strongly Coupled Quantum Dot Cavity Quantum Electrodynamics written by Alexander Carmele and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2011-09 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in semiconductor technology constitute a new physical system to investigate quantum optics in a solid state environment: a quantum dot strongly coupled to a single cavity mode. In the strong coupling regime, the electron-photon coupling dominates over dissipation processes and Rabi oscillations occur. This thesis focuses on the theoretical investigation of the strong coupling regime in the single-photon limit, in which few photons interact with a single quantum dot and the combined electron and photon dynamics is strongly correlated. Typical theoretical frameworks rely on factorization approaches, such as the cluster expansion scheme. However, for strongly correlated dynamics, standard factorization schemes fail and new theoretical frameworks become necessary. The work in hand develops two novel methods within the equation of motion approach to solve the complete quantum kinetics without a factorization of the electron-photon interaction, including non-Markovian features, and hereby bridges this gap in the theoretical description of semiconductor quantum optics.
Book Synopsis Coherent Control and Decoherence of Single Semiconductor Quantum Dots in a Microcavity by : Edward Bradstreet Flagg
Download or read book Coherent Control and Decoherence of Single Semiconductor Quantum Dots in a Microcavity written by Edward Bradstreet Flagg and published by . This book was released on 2008 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor quantum dots tightly confine excited electron-hole pairs, called excitons, resulting in discrete energy levels similar to those of single atoms. Transition energies in the visible or near-infrared make quantum dots suitable for many applications in quantum optics and quantum information science, but to take advantage of all the properties of quantum dot emission, it is necessary to excite them coherently which has been a great challenge due to background scattering of the excitation laser. This dissertation presents the first coherent control of a single quantum dot with observation of its resonance fluorescence and decoherence phenomena. Strong continuous-wave excitation causes the dot to undergo several Rabi oscillations before emitting. These are visible as oscillations in the first- and second-order correlation functions of the emission, and the quantum dot states are "dressed", resulting in a Mollow triplet in the emission spectrum. Some resonantly excited dots, in addition to resonance fluorescence, also emit light from excited states several meV higher in energy. Such up-conversion fits existing theories of decoherence but has never been directly observed before. The up-conversion intensity is shown to be described well by a fairly simple three-level model with single-phonon absorption. The coherent phenomena of resonance fluorescence and the decoherence due to up-conversion paint a dual picture of single quantum dots wherein they can sometimes be treated as an ideal two-level system, but their interactions with the host crystal can lead to many complex behaviors.
