Strongly Driven Semiconductor Quantum Wells

1994 ◽  
Vol 116 ◽  
pp. 417-423 ◽  
Author(s):  
Martin Holthaus
Keyword(s):  
Laser Radiation ◽  
Hamiltonian System ◽  
Quantum Wells ◽  
Far Infrared ◽  
Quantum Mechanical ◽  
Driven Systems ◽  
Periodically Driven ◽  
Semiconductor Quantum Wells ◽  
Classical Quantum ◽  
Quantum Correspondence

The influence of resonances in a classical Hamiltonian system on its quantum mechanical counterpart is particularly transparent in periodically driven systems with one degree of freedom. Wide semiconductor quantum wells, subjected to strong far-infrared laser radiation, may be suitable objects to study the classical-quantum correspondence experimentally.

Intra-magnetoexciton transitions in semiconductor quantum wells

2001 ◽  
Vol 692 ◽  
Author(s):  
Z. Barticevic ◽  
M. Pacheco ◽  
C. A. Duque ◽  
L. E. Oliveira
Keyword(s):  
Quantum Wells ◽  
Energy Levels ◽  
Far Infrared ◽  
Theoretical Work ◽  
Growth Direction ◽  
Oscillator Strengths ◽  
Transition Energies ◽  
Semiconductor Quantum Wells ◽  
Optically Detected ◽  
Optically Detected Resonance

AbstractHighly sensitive optically detected resonance experiments have shown that magnetoexcitons in GaAs-(Ga,Al)As semiconductor quantum wells have discrete internal energy levels, with transition energies found in the far-infrared (terahertz) region. Here we are concerned with a theoretical study of the terahertz transitions of light-hole and heavy-hole confined magnetoexcitons in GaAs-(Ga,Al)As quantum wells, under a magnetic field applied in the growth direction of the semiconductor heterostructure. The various magnetoexciton states are obtained in the effective-mass approximation by expanding the corresponding exciton-envelope wave functions in terms of appropriate Gaussian functions. The electron and hole cyclotron resonances and intra-magnetoexciton transitions are theoretically studied by exciting the allowed electron, hole and internal magnetoexcitonic transitions with far-infrared radiation. Theoretical results are obtained for both the intra-magnetoexciton transition energies and oscillator strengths associated with excitations from 1s - like to 2s, 2p±, and 3p±- like magnetoexciton states, and from 2p- to 2s – like exciton states. Present results are in overall agreement with available optically detected resonance measurements and clarifies a number of queries in previous theoretical work.

scholarly journals Inflationary quantum dynamics and backreaction using a classical-quantum correspondence

2021 ◽  
Vol 81 (11) ◽  
Author(s):  
Reginald Christian Bernardo
Keyword(s):  
Quantum Dynamics ◽  
Approximate Analytical Solution ◽  
Quantum Mechanical ◽  
Quantum Field ◽  
Semiclassical Gravity ◽  
Klein Gordon ◽  
Classical Quantum ◽  
Hubble Horizon ◽  
Quantum Correspondence ◽  
Classical Background

AbstractWe study inflationary dynamics using a recently introduced classical-quantum correspondence for investigating the backreaction of a quantum mechanical degree of freedom to a classical background. Using specifically a coupled Einstein–Klein–Gordon system, an approximation that holds well during the very early inflationary era when modes are very deep inside the Hubble horizon, we show that the backreaction of a mode of the quantum field will renormalize the Hubble parameter only if the mode’s wavelength is longer than some threshold Planckian length scale. Otherwise, the mode will destabilize the inflationary era. We also present an approximate analytical solution that supports the existence of such short-wavelength threshold and compare the results of the classical-quantum correspondence with the traditional perturbative-iterative method in semiclassical gravity.

Transport of quantum states of periodically driven systems

1990 ◽  
Vol 51 (8) ◽  
pp. 709-722 ◽  
Author(s):  
H.P. Breuer ◽  
K. Dietz ◽  
M. Holthaus
Keyword(s):  
Quantum States ◽  
Driven Systems ◽  
Periodically Driven

FAR INFRARED MAGNETO-ABSORPTION STUDY OF BARRIER IMPURITIES AND SCREENING IN GaAs/AlGaAs MULTIPLE QUANTUM WELLS

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-239-C5-242 ◽  
Author(s):  
E. GLASER ◽  
B. V. SHANABROOK ◽  
R. J. WAGNER ◽  
R. L. HAWKINS ◽  
W. J. MOORE ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Far Infrared ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Absorption Study

Microcavities

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Quantum Wells ◽  
Strong Light ◽  
Fundamental Physics ◽  
Postgraduate Students ◽  
Optical Cavities ◽  
Semiconductor Quantum Wells ◽  
Exciton Polaritons ◽  
Different Types ◽  
Potential Applications ◽  
Experimental Findings

Both rich fundamental physics of microcavities and their intriguing potential applications are addressed in this book, oriented to undergraduate and postgraduate students as well as to physicists and engineers. We describe the essential steps of development of the physics of microcavities in their chronological order. We show how different types of structures combining optical and electronic confinement have come into play and were used to realize first weak and later strong light–matter coupling regimes. We discuss photonic crystals, microspheres, pillars and other types of artificial optical cavities with embedded semiconductor quantum wells, wires and dots. We present the most striking experimental findings of the recent two decades in the optics of semiconductor quantum structures. We address the fundamental physics and applications of superposition light-matter quasiparticles: exciton-polaritons and describe the most essential phenomena of modern Polaritonics: Physics of the Liquid Light. The book is intended as a working manual for advanced or graduate students and new researchers in the field.

Noise-induced transitions between attractors in time periodically driven systems

1992 ◽  
Vol 68 (25) ◽  
pp. 3670-3673 ◽  
Author(s):  
Olaf Stiller ◽  
Andreas Becker ◽  
Lorenz Kramer
Keyword(s):  
Driven Systems ◽  
Periodically Driven
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