Browse Physics

An analog of the dynamical Casimir effect has been achieved, where phonons replace photons and thermal fluctuations replace vacuum fluctuations.

In laser metrology, adding additional laser pulses, separated in time from the first, suppresses energy line shifts and allows for even more precision.

Optical atomic clocks now outperform the best microwave cesium atomic clocks in terms of precision.

Ultracold atoms can coherently scatter backwards from a disordered potential in a way similar to classical waves.

Ionization experiments with benzene and similar organic molecules show evidence for short-lived electronic couplings, which resemble the Cooper pairs that carry current in superconductors.

A laser-based scheme allows cooling of molecules down to their lowest electronic, vibrational, and rotational state.

Snapshots of a molecule dissociating into atomic fragments are captured with x-ray laser pulses.

Researchers propose how to realize time crystals, structures whose lowest-energy states are periodic both in time and space.

David Wineland and Serge Haroche, who studied photons and atoms in new ways, have won the 2012 Nobel Prize in Physics.

In a step toward 3D movies, researchers have combined short laser pulses with electron diffraction methods to rapidly map the structure of a simple molecule in three dimensions.

Researchers demonstrate a scheme that allows counting up to 100 atoms in a given quantum state, which may enable high precision measurements with entangled states.

Experimentalists simulate the effects of spin-orbit coupling in ultracold Fermi gases, paving the way for the creation of new exotic phases of matter.

Two separate experiments have demonstrated the fast transport of trapped ions using trapping potentials that trace out the path for the ions to follow.

An improved method for trapping cesium atoms near dielectric nanofibers raises possibilities for applications as well as tests of fundamental physics.

A new design for a matter-beam splitter uses crossed lasers to make a “fork in the road” for traveling matter waves.

Two proposed experiments may allow measurement of how much entanglement is present in a many-body quantum system.

The compressibility of a gas of repulsive fermions has been measured with a novel imaging technique.