A team of Japanese researchers has discovered a method to control Kelvin wave excitation in superfluid helium-4. This breakthrough can refine our understanding of how energy moves in quantum fluids, ...

Millot and colleagues squeezed a mixture of hydrogen and helium between two diamonds and hit the concoction with a powerful laser to compress it even further. As the pressure and temperature ...

which is necessary to manipulate the electron states in helium atoms. In order to control the electron-photon states, the researchers used laser pulses that dispersed or contracted depending on ...