• Physics 18, s100
A laser-plasma-driven free-electron laser achieves record performance, marking a step toward making intense, ultrafast x-ray sources more accessible.
T. Swift/LBNL
For two decades,…
Category: 4. Physics
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Light Versus Light: The Secret Physics Battle That Could Rewrite the Rules
In a fascinating dive into the strange world of quantum physics, scientists have shown that light can interact with itself in bizarre ways—creating ghost-like virtual particles that pop in and out of existence. This “light-on-light scattering”…
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MIT Just Proved Einstein Wrong in the Most Famous Quantum Experiment
MIT physicists have performed the most precise version of the famous double-slit experiment, using ultracold atoms and single photons to reveal the strange dual nature of light as both wave and particle. This quantum balancing act—long debated…
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Gold Does Something Unexpected When Superheated Past Its Melting Point : ScienceAlert
Gold remains perfectly solid when briefly heated beyond previously hypothesized limits, a new study reports, which may mean a complete reevaluation of how matter behaves under extreme conditions.
The international team of scientists behind the…
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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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Observational evidence of a new type of cyclonic eddy of the Gulf Stream
On the formation mechanism of hook-type eddies
These results necessitate a discussion on the mechanism of formation of hook-type cyclonic eddies. As mentioned earlier, it is possible that the hook-type eddies are realizations of the growth of…
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Generation of nonclassical optomagnonic states under the influences of Stokes scattering process and thermal noise
In this section, we want to investigate the nonclassical feature of the particles. Especially, we are interested in finding under what conditions the strong antibunching and blockade effect can be realized in the dynamical behavior of the photons…
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An on-chip phased array for non-classical light
Theory
Consider a quantized electromagnetic field \(\hat{E}\) transmitted over free space to a phased array receiver. The field can be decomposed into positive and negative frequency components, \(\hat{E}={\hat{E}}^{+}+{\hat{E}}^{-}\), where
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Material analysis through X-ray attenuation decomposition in spectral computed tomography
Calculating (\(\mu _{PE},\mu _{CS}\))
In 1976 Alvarez and Macovski14 described that for energies relevant for medical imaging, the x-ray attenuation \(\mu\) for any material can be approximated as
$$\begin{aligned} \mu (Z,E) = a_{PE}(Z) \times…
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