Results 101 to 110 of about 839,047 (377)

The Quantum Harmonic Otto Cycle [PDF]

open access: yesEntropy, 2016
The quantum Otto cycle serves as a bridge between the macroscopic world of heat engines and the quantum regime of thermal devices composed from a single element.
R. Kosloff, Y. Rezek
semanticscholar   +1 more source

The Negative Dimensional Oscillator at Finite Temperature

open access: yes, 1993
We study the thermal behavior of the negative dimensional harmonic oscillator of Dunne and Halliday that at zero temperature, due to a hidden BRST symmetry of the classical harmonic oscillator, is shown to be equivalent to the Grassmann oscillator of ...
Arvind N. Vaidya   +19 more
core   +1 more source

Unveiling Ultrafast Spin‐Valley Dynamics and Phonon‐Mediated Charge Transfer in MoSe2/WSe2 Heterostructures

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study reveals the potential to manipulate spin‐valley polarization dynamics in MoSe2/WSe2 heterostructures by quantifying different scattering processes following selective photoexcitation. The results show that these heterostructures enable ultrafast valley‐selective charge transfer, with phonon scattering playing a significant role in the ...
Julian Wagner   +9 more
wiley   +1 more source

Non-classical correlations beyond Bell’s inequality violation in qubit-pairs with an intrinsic noise

open access: yesResults in Physics, 2019
In this paper, we analytically explore two qubits interacting with a coherent harmonic oscillator field under intrinsic noise. The interaction of the uncorrelated two qubits with a harmonic oscillator initially in the superposition of coherent states ...
A.-B. A. Mohamed, H. Eleuch
doaj  

Deterministic nonlinear phase gates induced by a single qubit

open access: yesNew Journal of Physics, 2018
We propose deterministic realizations of nonlinear phase gates by repeating a finite sequence of non-commuting Rabi interactions between a harmonic oscillator and only a single two-level ancillary qubit.
Kimin Park, Petr Marek, Radim Filip
doaj   +1 more source

Penerapan Metode Monte-Carlo untuk Analisis Toleransi Perubahan Nilai Komponen Terhadap Kinerja Osilator Frekuensi 2,3 GHz

open access: yesJurnal Rekayasa Elektrika, 2017
In telecommunications equipment, an oscillator has a function to generate a carrier signal. As the carrier signal, a high stability performance is required. The frequency shift caused by component tolerances.
Teguh Firmansyah, Gunawan Wibisono
doaj   +1 more source

Exact Solutions of the Mass-Dependent Klein-Gordon Equation with the Vector Quark-Antiquark Interaction and Harmonic Oscillator Potential

open access: yes, 2013
Using the asymptotic iteration and wave function ansatz method, we present exact solutions of the Klein-Gordon equation for the quark-antiquark interaction and harmonic oscillator potential in the case of the position-dependent mass.
M. Bahar, F. Yasuk
semanticscholar   +1 more source

Quantum versus Semiclassical Description of Selftrapping: Anharmonic Effects

open access: yes, 1999
Selftrapping has been traditionally studied on the assumption that quasiparticles interact with harmonic phonons and that this interaction is linear in the displacement of the phonon.
A. R. Bishop   +18 more
core   +2 more sources

Curcuminoid Derivatives with a Donor‐Acceptor‐Donor Architecture: an Outstanding Platform for Highly‐Efficient Near‐Infrared Electroluminescence and Amplified Spontaneous Emission

open access: yesAdvanced Optical Materials, EarlyView.
Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo   +11 more
wiley   +1 more source

Harmonic oscillator under Lévy noise: unexpected properties in the phase space. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2010
A harmonic oscillator under the influence of noise is a basic model of various physical phenomena. Under Gaussian white noise the position and velocity of the oscillator are independent random variables which are distributed according to the bivariate ...
I. Sokolov, W. Ebeling, B. Dybiec
semanticscholar   +1 more source

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