New frontiers in quantum cascade lasers
... circles refer to bound-to-continuum designs, and green diamonds are THz QCLs based on material system other than GaAs/AlGaAs. See [26, 27, 31] for a description of different THz QCL designs. (b) Timeline for the maximum operating temperatures in pulsed mode achieved by THz QCLs from the initial demo ...
... circles refer to bound-to-continuum designs, and green diamonds are THz QCLs based on material system other than GaAs/AlGaAs. See [26, 27, 31] for a description of different THz QCL designs. (b) Timeline for the maximum operating temperatures in pulsed mode achieved by THz QCLs from the initial demo ...
Recent developments in transport phenomena in Weyl semimetals
... the hybridization preference changes become Weyl nodes in the bulk while the end layers have leftover segments that do not have partners to hybridize with and survive as the Fermi arcs. This is shown in Fig. 2. In this picture, the topological nature of the Fermi arcs is not apparent; however, the w ...
... the hybridization preference changes become Weyl nodes in the bulk while the end layers have leftover segments that do not have partners to hybridize with and survive as the Fermi arcs. This is shown in Fig. 2. In this picture, the topological nature of the Fermi arcs is not apparent; however, the w ...
Quantum Wavepacket Dynamics in Molecular and Trapped Ion Systems Dong Wang
... Heisenberg’s uncertainty principle, a laser pulse with a very short duration should have a very broad energy width. When a laser pulse with duration around 100 fs is used to excite a small molecule, usually several vibrational levels in the upper excited state are excited simultaneously. The superpo ...
... Heisenberg’s uncertainty principle, a laser pulse with a very short duration should have a very broad energy width. When a laser pulse with duration around 100 fs is used to excite a small molecule, usually several vibrational levels in the upper excited state are excited simultaneously. The superpo ...
the notion of `aether`: hegel versus contemporary physics
... Beyond mere observations and collections of data the work of science is to a large extent the formulation of theories in the context of which those observations and data become meaningful [3](chpt. 7). Theories, however, cannot be found as objects in nature. As inhabitants of Popper's well-known Wor ...
... Beyond mere observations and collections of data the work of science is to a large extent the formulation of theories in the context of which those observations and data become meaningful [3](chpt. 7). Theories, however, cannot be found as objects in nature. As inhabitants of Popper's well-known Wor ...
THE NOTION OF 'AETHER': HEGEL VERSUS CONTEMPORARY PHYSICS Stefan Gruner
... Beyond mere observations and collections of data the work of science is to a large extent the formulation of theories in the context of which those observations and data become meaningful [3](chpt. 7). Theories, however, cannot be found as objects in nature. As inhabitants of Popper's well-known Wor ...
... Beyond mere observations and collections of data the work of science is to a large extent the formulation of theories in the context of which those observations and data become meaningful [3](chpt. 7). Theories, however, cannot be found as objects in nature. As inhabitants of Popper's well-known Wor ...
Denouement of a wormhole-brane encounter
... black hole. Put another way, total envelopment is not a possible static or quasi-static end state of the encounter, because the envelopment necessarily occurs within an event horizon within which the relevant portion of the brane must fully and inexorably contract. If a bulk wormhole is not a black ...
... black hole. Put another way, total envelopment is not a possible static or quasi-static end state of the encounter, because the envelopment necessarily occurs within an event horizon within which the relevant portion of the brane must fully and inexorably contract. If a bulk wormhole is not a black ...
J. Foot - Atomic Physics
... This book is primarily intended to accompany an undergraduate course in atomic physics. It covers the core material and a selection of more advanced topics that illustrate current research in this field. The first six chapters describe the basic principles of atomic structure, starting in Chapter 1 wi ...
... This book is primarily intended to accompany an undergraduate course in atomic physics. It covers the core material and a selection of more advanced topics that illustrate current research in this field. The first six chapters describe the basic principles of atomic structure, starting in Chapter 1 wi ...
Canopy quantum yield in a mesocosm study
... through scaling and/or indirect measurements. The development of a facility (EcoCELLs) at the Desert Research Institute has now made it possible to directly measure canopy gas exchange. In this experiment, sunflowers (Helianthus annus) were planted in the EcoCELLs and grown under ambient (399 mol m ...
... through scaling and/or indirect measurements. The development of a facility (EcoCELLs) at the Desert Research Institute has now made it possible to directly measure canopy gas exchange. In this experiment, sunflowers (Helianthus annus) were planted in the EcoCELLs and grown under ambient (399 mol m ...
Theoretical study of light and sound interaction in phoxonic
... 6.3.3 Rabi oscillations . . . . . . . . . . . . . . . . . . . . 213 6.3.4 Population inversion: collapse and revival behavior . 215 6.3.5 Theoretical expresion of Rabi frequency oscillation for indirect bandgap semiconductor . . . . . . . . . . 220 6.4 Theoretical study of two-level systems inside o ...
... 6.3.3 Rabi oscillations . . . . . . . . . . . . . . . . . . . . 213 6.3.4 Population inversion: collapse and revival behavior . 215 6.3.5 Theoretical expresion of Rabi frequency oscillation for indirect bandgap semiconductor . . . . . . . . . . 220 6.4 Theoretical study of two-level systems inside o ...
"Electronic Spectroscopy and Energy Transfer in Cadmium Selenide Quantum Dots and Conjugated Oligomers"
... The electronic excited state kinetics of CdSe quantum dots (QD) are studied through optical spectroscopy, by subjecting the quantum dots to different experimental conditions, as well as coupling them to phenylene-ethynylene oligomers. CdSe QDs feature a quantum-confined exciton state which pursues a ...
... The electronic excited state kinetics of CdSe quantum dots (QD) are studied through optical spectroscopy, by subjecting the quantum dots to different experimental conditions, as well as coupling them to phenylene-ethynylene oligomers. CdSe QDs feature a quantum-confined exciton state which pursues a ...
Classification of topological quantum matter with
... topological band insulators. In these systems strong spinorbit interactions open up a bulk band gap and give rise to an odd number of band inversions, thereby altering the wave function topology. Experimentally, this topological quantum state has been realized in HgTe/CdTe semiconductor quantum well ...
... topological band insulators. In these systems strong spinorbit interactions open up a bulk band gap and give rise to an odd number of band inversions, thereby altering the wave function topology. Experimentally, this topological quantum state has been realized in HgTe/CdTe semiconductor quantum well ...
Interacting Rydberg atoms
... atoms, where the interaction between Rydberg atoms is induced via Stark-tuned Förster resonances. Pulsed experiments, following the idea of Ramsey experiments, are used for high resolution spectroscopy of the Förster defect and phase sensitive detection. Coherent oscillations between pair states and ...
... atoms, where the interaction between Rydberg atoms is induced via Stark-tuned Förster resonances. Pulsed experiments, following the idea of Ramsey experiments, are used for high resolution spectroscopy of the Förster defect and phase sensitive detection. Coherent oscillations between pair states and ...
Relativistic effects in atomic and molecular properties
... electron correlation problem (very difficult to treat accurately even at the nonrelativistic level) will be considered at the relativistic level. Rigorous four–component relativistic many–electron calculations for larger molecules are hardly tractable in the spirit of the four–component Dirac relati ...
... electron correlation problem (very difficult to treat accurately even at the nonrelativistic level) will be considered at the relativistic level. Rigorous four–component relativistic many–electron calculations for larger molecules are hardly tractable in the spirit of the four–component Dirac relati ...
Lie algebra decompositions with applications to quantum dynamics
... ment dynamics [4, 5, 11, 28]. In quantum information theory, Lie group decompositions can be used to design quantum circuits, that is, sequences of gates which perform operations on the quantum state. In particular, assuming that a certain quantum algorithm corresponds to a unitary transformation Xf ...
... ment dynamics [4, 5, 11, 28]. In quantum information theory, Lie group decompositions can be used to design quantum circuits, that is, sequences of gates which perform operations on the quantum state. In particular, assuming that a certain quantum algorithm corresponds to a unitary transformation Xf ...
Dirac Notation in Mathematica
... The operator and eigenket templates will appear. Next press [TAB] several times till the first place holder (square) is selected. Then press the keys: b[TAB]2[TAB]c[TAB]3[TAB]a[TAB]4[TAB]b Finally press at the same time the keys [SHIFT] and [ENTER] to evaluate. The result of the calculation is the s ...
... The operator and eigenket templates will appear. Next press [TAB] several times till the first place holder (square) is selected. Then press the keys: b[TAB]2[TAB]c[TAB]3[TAB]a[TAB]4[TAB]b Finally press at the same time the keys [SHIFT] and [ENTER] to evaluate. The result of the calculation is the s ...
Nernst effect in metals and superconductors: a review of concepts
... thermal gradient in presence of magnetic field. In the beginning of this century, Nernst experiments on cuprates were analyzed assuming that: i) The contribution of quasi-particles to the Nernst signal is negligible; and ii) Gaussian superconducting fluctuations cannot produce a Nernst signal well a ...
... thermal gradient in presence of magnetic field. In the beginning of this century, Nernst experiments on cuprates were analyzed assuming that: i) The contribution of quasi-particles to the Nernst signal is negligible; and ii) Gaussian superconducting fluctuations cannot produce a Nernst signal well a ...
PARADIGM OF QUASI-LIE AND QUASI-HOM
... • x,y,z θ(z, x)(hα(x), hy, zii + βhx, hy, zii) = 0, for (z, x), (y, z), (x, y) ∈ Dθ , where x,y,z denotes cyclic summation with respect to x, y, z. Remark 2. Note that (ω(x, y)ω(y, x) − id)hx, yi = 0, if (x, y), (y, x) ∈ Dω , which follows from the computation hx, yi = ω(x, y)hy, xi = ω(x, y)ω(y, ...
... • x,y,z θ(z, x)(hα(x), hy, zii + βhx, hy, zii) = 0, for (z, x), (y, z), (x, y) ∈ Dθ , where x,y,z denotes cyclic summation with respect to x, y, z. Remark 2. Note that (ω(x, y)ω(y, x) − id)hx, yi = 0, if (x, y), (y, x) ∈ Dω , which follows from the computation hx, yi = ω(x, y)hy, xi = ω(x, y)ω(y, ...