Browse Physics

Calculating the properties of three trapped atoms suffices to explain the behavior of an entire fermionic gas.

Sometimes experimental noise is actually signal. Two groups have shown how density fluctuations in a gas of identical fermions can be used as a nanokelvin thermometer.

Theoretical analysis of parallel layers of ultracold fermionic atoms reveals a rich variety of novel phases that might offer analogies to phenomena in other areas of physics.

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

A new perspective on strongly interacting fermions emerges from the experimental confirmation of a universal formula.

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.

New experiments create pairs of vortices of opposite circulation by forcing a Bose-Einstein condensate to flow past an obstacle.

New experiments extend chemical dynamics research to temperatures below $1$ microkelvin.

With the right configuration of laser beams, researchers could measure how much of an ultracold atomic gas is actually superfluid.

A new method of thermometry for ultracold atoms in optical lattices has the potential to accurately measure temperatures down to $50\text{pK}$.

Two separate teams have achieved the long sought after Bose-Einstein condensation of strontium.

Interactions among noncondensed bosonic atoms in a trap can cause one species of atoms accelerated by a magnetic field to drag along another species of atoms that would normally not interact with the field.

New methods for lowering the entropy of ultracold gases may allow observation of more subtle quantum materials.

An electric field can be used to pull on molecular hydrogen’s highly excited outer electron to slow down and trap the molecule.

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.

A huge, predicted atomic parity violation has now been observed in ytterbium, further aiding tabletop experimental searches for physics beyond the standard model that complement ongoing efforts at high-energy colliders.

Experiments on melting of small water clusters open the door to the study of the size-dependent phase diagram of water.

Chaotic matter waves formed by perturbing a Bose-Einstein condensate may provide a valuable laboratory setting for understanding many different kinds of quantum-fluid turbulence.

Measuring quantum interference of atomic matter waves may help detect experimental signatures of a fundamental theory of physics.

The fermionic analog of a solid-state polaron (an electron surrounded by a cloud of phonons) has been created by dropping a spin-down atom into a Fermi sea of spin-up ultracold atoms.