Model system
We use the Generalized Holstein-Tavis-Cummings (GHTC) Hamiltonian23,24,25,26 to describe N excitons interacting with \({{{\mathcal{M}}}}\) cavity modes, and \(N\gg {{{\mathcal{M}}}}\) in line with typical experimental conditions….
Category: 4. Physics
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Cavity-enhanced continuous-wave microscopy with potentially unstable cavity length
Cavity parameters
The cavity length is defined by the 4f requirement to be \(\sim 30\,\text {cm}\). Accounting for the optical path length differences introduced by the lenses results in an actual length of approximately \(30.6\,\text {cm}\). This…
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A dual input dual spliced network with data augmentation for robust modulation recognition in communication countermeasures
PET-CGDNN model
The proposed Parameter Estimation and Transformation-based CNN-GRU Deep Neural Network (PET-CGDNN) model consists of a parameter estimator, a parameter transformer, and a hybrid neural network, as depicted in Fig. 1.
Fig. 1 Continue Reading
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Tunable reciprocal and nonreciprocal contributions to 1D Coulomb drag
Device operation and wires characterization
A schematic of the vertically-coupled quantum wires devices used in this work is shown in Fig. 1b, with a typical optical image provided (see Supplementary Fig. 1). As the two wires are defined in two…
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Supervised learning of the Jaynes–Cummings Hamiltonian
Wang, X., Zhao, Y. & Pourpanah, F. Recent advances in deep learning. Int. J. Mach. Learn. Cybernet. 11, 747–750 (2020).
Young, T., Hazarika, D., Poria, S. & Cambria, E. Recent trends in deep…
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Quantum-like nonlinear interferometry with frequency-engineered classical light
Super-resolution can be explained via the definition of maximally entangled state, that can be written as25:
$$\begin{aligned} |\psi \rangle = \frac{|N,0\rangle _{ab} + e^{iN\phi }|0,N\rangle _{ab}}{\sqrt{2}}\,. \end{aligned}$$
…
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Quantum tunneling mystery solved after 100 years—and it involves a surprise collision
Recently, Professor Dong Eon Kim from POSTECH’s Department of Physics and Max Planck Korea-POSTECH Initiative and his research team have succeeded in unraveling for the first time the mystery of the ‘electron tunneling’ process, a core concept in…
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Take the Big Mysteries in Physics Survey
• Physics 18, 140
Did time start at the big bang? What happens if you fall into a black hole? What explains the mysterious dark matter? Weigh in on the toughest questions facing physicists today.
Ricardo/stock.adobe.com;…
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Let’s Twist Again: Seeing Spin Spirals in Action
• Physics 18, 139
Using ultrafast x-ray pulses, researchers have probed the chirality of spin spirals in synthetic…
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Breaking the Speed Limit: High-Speed Optical Coherence Modulation With Lithium Niobate
Overcoming conventional technological limitations to realize high-speed optical coherence modulation at 350 kHz. Structured light fields possess a wide range of unique and powerful characteristics. By gaining greater control over their optical…
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