Electromagnetically Induced Exciton Dynamics and Bose-Einstein Condensation Near a Photonic Band Gap PDF Download
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Author: Shengjun Yang
Publisher:
ISBN:
Category : Physics Theses
Languages : en
Pages : 0
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Author: Shengjun Yang
Publisher:
ISBN:
Category : Physics Theses
Languages : en
Pages : 0
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Author: Sunipa Som
Publisher: Bentham Science Publishers
ISBN: 9815165410
Category : Science
Languages : en
Pages : 141
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Book Description
This reference book explains the fundamentals of Bose Einstein Condensation (BEC) in excitons and polaritons. It presents five chapters exploring fundamental concepts and recent developments on the subject. Starting with a historical overview of BEC, the book progresses into the origins and behaviors of excitons and polaritons. Chapters also cover the unique thermalization and relaxation kinetics of excitons, and the distinctive features of polaritons, such as lasing, superfluidity, and quantized vortices. The chapters dedicated to BEC in excitons and polaritons detail experimental techniques, theoretical modeling, recent advancements, and practical applications in a simplified way for beginners. This book serves as a resource for researchers, physicists, and students interested in the phenomena of BEC, providing insights into both the theoretical foundations and the practical implications of excitons and polaritons.
Author: Svi︠a︡toslav Anatolʹevich Moskalenko
Publisher: Cambridge University Press
ISBN: 9780521580991
Category : Science
Languages : en
Pages : 434
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Book Description
Bose-Einstein condensation of excitons is a unique effect in which the electronic states of a solid can self-organize to acquire quantum phase coherence. The phenomenon is closely linked to Bose-Einstein condensation in other systems such as liquid helium and laser-cooled atomic gases. This is the first book to provide a comprehensive survey of this field, covering theoretical aspects as well as recent experimental work. After setting out the relevant basic physics of excitons, the authors discuss exciton-phonon interactions as well as the behaviour of biexcitons. They cover exciton phase transitions and give particular attention to nonlinear optical effects including the optical Stark effect and chaos in excitonic systems. The thermodynamics of equilibrium, quasi-equilibrium, and nonequilibrium systems are examined in detail. The authors interweave theoretical and experimental results throughout the book, and it will be of great interest to graduate students and researchers in semiconductor and superconductor physics, quantum optics, and atomic physics.
Author: Pranai Vasudev
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Bose-Einstein condensation (BEC) is a remarkable manifestation of quantum mechani- cal behaviour where a macroscopic number of particles occupy a single particle ground state. Typical realizations of BEC occur at temperatures close to absolute zero. In this thesis, we propose a route towards full thermal equilibirum, room-temperature BEC of "half-light" - "half-matter" quasiparticles known as exciton-polaritons. Our proposed strategy uses three-dimensional photonic crystals to form the optical resonator; this leads to long lived confined optical modes. These long lived confined optical modes allow the condensates to reach full thermal equilibrium. Photonic crystal resonators ensure that the light-matter coupling strengths are significantly stronger than in conventional archi- tectures; this leads to BEC formation at higher temperatures. A central quantity in our work is the (lower) exciton-polariton dispersion depth. The dispersion depth is an energy scale that governs the limit on the critical temperature. Strategies for increasing the dispersion depth to facilitate room-temperature BEC will be discussed. We first examine exciton-polariton BEC in optical resonators composed of slanted pore photonic crystals. We consider InGaAs/InP quantum wells embedded in the res- onator to allow for light emission at a wavelength of approximately 1300 nm. In esti- mating the critical temperature, we ensure the use of modest exciton-polariton densities to avoid the saturation of the exciton resonance. Using three quantum wells, our study reveals that exciton-polariton BEC occurs for temperatures above 300 K and that our results are robust to both photonic and electronic disorder. Next, we investigate exciton-polariton BEC in optical resonators composed of wood- pile photonic crystals. We treat GaAs/AlAs quantum wells embedded in resonator to allow for the emission of light with a wavelength of approximately 750 nm. Due to the x-y symmetry of the woodpile photonic crystal, the exciton-polariton ground state exhibits a two-fold polarization degeneracy. We show that symmetry breaking lifts the degeneracy of the ground state and results in larger critical temperatures and higher condensate fractions, in comparison to a symmetrical woodpile structure. Our results show that for three quantum wells and a moderate exciton-polariton density that a BEC can be obtained at temperatures over 300 K; this condensate is robust to disorder.
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2626
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Author: Alexey Kavokin
Publisher: Elsevier
ISBN: 008048137X
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Volume 32 of the series addresses one of the most rapidly developing research fields in physics: microcavities. Microcavities form a base for fabrication of opto-electronic devices of XXI century, in particular polariton lasers based on a new physical principle with respect to conventional lasers proposed by Einstein in 1917. This book overviews a theory of all major phenomena linked microcavities and exciton-polaritons and is oriented to the reader having no background in solid state theory as well as to the advanced readers interested in theory of exciton-polaritons in microcavities. All major experimental discoveries in the field are addressed as well. · The book is oriented to a general reader and is easy to read for a non-specialist.· Contains an overview of the most essential effects in physics of microcavities experimentally observed and theoretically predicted during the recent decade such as:. · Bose-Einstein condensation at room temperature.· Lasers without inversion of population.· Microcavity boom: optics of the XXI century!· Frequently asked questions on microcavities and responses without formulas. · Half-light-half-matter quasi-particles: base for the future optoelectronic devices
Author: Nick Proukakis
Publisher: World Scientific
ISBN: 1848168128
Category : Science
Languages : en
Pages : 579
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Book Description
This volume provides a broad overview of the principal theoretical techniques applied to non-equilibrium and finite temperature quantum gases. Covering Bose-Einstein condensates, degenerate Fermi gases, and the more recently realised exciton-polariton condensates, it fills a gap by linking between different methods with origins in condensed matter physics, quantum field theory, quantum optics, atomic physics, and statistical mechanics.
Author: Alexey Kavokin
Publisher: OUP Oxford
ISBN: 0191620734
Category : Science
Languages : en
Pages : 487
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Book Description
Rapid development of microfabrication and assembly of nanostructures has opened up many opportunities to miniaturize structures that confine light, producing unusual and extremely interesting optical properties. This book addresses the large variety of optical phenomena taking place in confined solid state structures: microcavities. Realisations include planar and pillar microcavities, whispering gallery modes, and photonic crystals. The microcavities represent a unique laboratory for quantum optics and photonics. They exhibit a number of beautiful effects including lasing, superfluidity, superradiance, entanglement etc. Written by four practitioners strongly involved in experiments and theories of microcavities, it is addressed to any interested reader having a general physical background, but in particular to undergraduate and graduate students at physics faculties.
Author: Wilhelm Zwerger
Publisher: Springer Science & Business Media
ISBN: 3642219772
Category : Science
Languages : en
Pages : 543
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Book Description
Recent experimental and theoretical progress has elucidated the tunable crossover, in ultracold Fermi gases, from BCS-type superconductors to BEC-type superfluids. The BCS-BEC Crossover and the Unitary Fermi Gas is a collaborative effort by leading international experts to provide an up-to-date introduction and a comprehensive overview of current research in this fast-moving field. It is now understood that the unitary regime that lies right in the middle of the crossover has remarkable universal properties, arising from scale invariance, and has connections with fields as diverse as nuclear physics and string theory. This volume will serve as a first point of reference for active researchers in the field, and will benefit the many non-specialists and graduate students who require a self-contained, approachable exposition of the subject matter.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 860
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Book Description
