Browse Physics

A new experiment reveals the different dynamics of particles and holes in ultracold fermionic gases in an optical lattice, opening the way to investigate condensed matter transport phenomena such as photoconductivity via quantum optical systems.

The demonstration of a single-particle interferometer opens the door to a number of applications, from investigations of gravity to surface impact physics.

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

Shifts in atomic energy levels caused by electron interaction with virtual photons can also occur in an ensemble of atoms acting cooperatively.

Absorption spectroscopy limited only by quantum noise has been demonstrated over a broad frequency range using laser frequency combs.

Coupling a silicon nitride membrane resonator with a gas of ultracold atoms offers a novel approach to controlling mechanical systems at the quantum level.

New beam splitter techniques extend the world of precision experiments with matter waves.

When it comes to probing ultracold atoms in optical lattices, has direct imaging put Bragg diffraction out of business?

Electrons join the growing technology to build integrated quantum circuits that guide matter waves on a chip.

Photons (bosons) confined in a hollow waveguide containing an atomic gas could show spin-charge separation, which is more commonly associated with one-dimensional fermions.

Cold atoms in optical cavities can undergo a transition to a liquid-crystalline state in which the positions of the atoms are determined by the photon field.

Transmission of light through an atomic vapor offers a way of replacing a conventional compass with an all-optical device.

In a new regime for atomic clocks, strong interactions between atoms dramatically increase the clock’s coherence time.

Vibrations of the atoms in a molecule are used to implement a Fourier transform orders of magnitude faster than possible with devices based on conventional electronics.

Calculations show that with new short pulse x-ray light sources, it should be possible to use photoelectron emission to make movies of changes in molecular structure.

Dispersive probing of an atomic transition decreases the “dead time” of optical atomic clocks, potentially enabling more stable time reference standards.

Loading cold atoms into a hollow-core optical fiber enables all-optical switching with just several hundred photons.