Results 71 to 80 of about 96,212 (277)
Advanced Optical Materials, EarlyView.The nanoparticle‐on‐slit (NPoS) cavity has emerged as a sub‐wavelength platform for efficient coherent frequency conversion between mid‐infrared and visible light, and for nanoscale nonlinear vibrational spectroscopy. This numerical study identifies the NPoS quasi‐normal modes, relates them to known nanogap patterns, and predicts the relative ...
Huatian Hu +3 more
wiley +1 more source
Angewandte Chemie, EarlyView.In loosely packed nanoaggregates, increased deuteration enhances photoluminescence quantum yields (PLQY) and extends the fluorescence lifetimes of tetraphenylethylene (TPE) by reducing internal conversion rates. Conversely, in tightly packed crystalline states, deuteration leads to decreased PLQY and shortened lifetimes, attributable to the Duschinsky ...
Siwei Zhang +11 more
wiley +2 more sources
Instanton solutions on the polymer harmonic oscillator
, 2016 It is computed, using instanton methods, the first allowed energy band for the polymer harmonic oscillator. The result is consistent with the band structure of the standard quantum pendulum but with pure point spectrum.
Garcia-Chung, Angel +2 more
core +1 more source
Controllability of Quantum Harmonic Oscillators [PDF]
IEEE Transactions on Automatic Control, 2004 It is proven in a previous paper that any modal approximation of the one-dimensional quantum harmonic oscillator is controllable. We prove here that, contrary to such finite-dimensional approximations, the original infinite-dimensional system is not controllable: Its controllable part is of dimension 2 and corresponds to the dynamics of the average ...
Pierre Rouchon, Mazyar Mirrahimi
openaire +2 more sources
Advanced Optical Materials, EarlyView.High‐performance narrowband NIR organic photodiodes are essential for miniaturized imaging, sensing, and wearable systems, yet existing approaches suffer from angular sensitivity and limited material compatibility. This work demonstrates the first polariton‐enhanced OPDs with angle‐independent response, sub‐45 nm bandwidth, and record responsivity (0 ...
Ahmed Gaber Abdelmagid +7 more
wiley +1 more source
Coupled harmonic oscillators and their quantum entanglement [PDF]
Physical Review E, 2018 A system of two coupled quantum harmonic oscillators with the Hamiltonian ${\hat H}=\frac{1}{2}\left(\frac{1}{m_1}{\hat p}^{2}_1 + \frac{1}{m_2}{\hat p}^{2}_2+A x^2_1+B x^2_2+ C x_1 x_2\right)$ can be found in many applications of quantum and nonlinear physics, molecular chemistry, and biophysics. The stationary wave function of such a system is known,
openaire +3 more sources
Recent Advances in χ(2)‐Based Nonlinear Frequency Conversion of Fiber Lasers
Advanced Photonics Research, EarlyView.Visible and mid‐infrared fiber lasers, enabled by nonlinear frequency conversion of fiber lasers, offer several advantages such as high efficiency, excellent wavelength tunability, high power, and superior beam quality that are highly desirable for practical applications. This study provides a comprehensive review of recent research progress in the χ(2)
Bing Han +10 more
wiley +1 more source
Scientific ReportsWe investigate the quantum-classical correspondence for a particle tunnelling through a periodic superlattice structure with an applied bias voltage and an additional tilted harmonic oscillator potential.
F. Wang +3 more
doaj +1 more source
European Physical Journal C: Particles and Fields, 2019 Non-relativistic quantum effects of the topology of the spacetime with the distortion of a vertical line into a vertical spiral on the harmonic oscillator are investigated.
W. C. F. da Silva +2 more
doaj +1 more source
Wavefunctios of log-periodic oscillators
, 2011 We use the Lewis and Riesenfeld invariant method [\textit{J. Math. Phys.} \textbf{10}, 1458 (1969)] and a unitary transformation to obtain the exact Schr\"{o}dinger wave functions for time-dependent harmonic oscillators exhibiting log-periodic-type ...
Bessa, V., Guedes, I.
core +1 more source