Browse Physics

An important hurdle to achieve a positronium Bose condensate is overcome with the production of a population of fully polarized positronium atoms

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.

A single-molecule junction on a silver surface exhibits orders-of-magnitude variation in conductance.

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

A single carbon nanotube held at a positive voltage can capture and ionize individual cold atoms with high efficiency.

Rubidium atoms trapped in optical lattices are shown to exhibit a magic-wavelength behavior.

The rate at which ultracold molecules react is limited by quantum mechanical effects not seen in ordinary chemistry, according to calculations that agree with recent experiments.

A well-known model in condensed matter physics has now been applied to ultracold atoms in an optical lattice.

Researchers have constructed a new high accuracy optical clock based on quantum spectroscopy of an aluminum ion.

Highly excited atoms arranged in a circular lattice exhibit unusual many-particle states.

Acousto-optical techniques can be used to access a new regime of vortex nucleation in condensates in optical lattices with deep potential wells.

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

A prediction that resonantly interacting particles can form weakly bound trimer states remained a mere theoretical oddity for more than three decades until tunable ultracold gases caused the field to explode, with enormous progress in just the last year.

An NMR-based quantum computer can simulate a hydrogen molecule and accurately yield its ground-state energy.

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

The demonstration of entanglement between two neutral atoms would be a key step toward using them for quantum computation.

Negative ions dissolved in water may be attracted to the surface because of the rearrangement of charges within the ions.

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

A new tool is developed to study dynamics of molecular dissociation under electron bombardment.

Improved optical techniques may permit direct cooling of molecules to form ultracold gases, instead of cooling the atoms first.