One intriguing method that could be used to form the qubits needed for quantum computers involves electrons hovering above ...

Entangled electrons Illustration depicting an atom (green nucleus with a white electron cloud) that is hit by a laser pulse (red). One electron is ripped out of the atom (black sphere on the right) ...

Once a photon has removed an electron from a helium atom, it is possible to calculate the probable position of the remaining electron. The likeliest position of the electron is shown in the image as ...

The interest in exotic atoms arises from the fact that they often facilitate the most basic experimental strategy used in physics: changing a single parameter or component in an otherwise complex ...

Pionic helium In this experiment, a pion – shown here with one orange and one blue particle representing its quark and anti-quark – replaces one of the two electrons in the helium atom. This new ...

Scientists describe the configuration and energy levels of antiprotonic helium that can potentially be produced by colliding slow antiprotons with ordinary helium at CERN. Exotic subatomic particles ...