Browse Physics

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

Is there a fundamental lower bound on viscosity? To answer this question, we can look at the coldest and hottest fluids that laboratories are able to produce.

The properties of graphene might be studied from another angle by putting ultracold atoms into a hexagonal optical lattice.

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.

Femtosecond light pulses at two different frequencies are effective in aligning and orienting molecules without the need for a strong static field.

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

A Bose-Einstein condensate of calcium atoms has been created, the first from alkaline earth elements and potentially useful for stable clocks and precision measurements.

The atoms in an optical lattice could form the basis for a complete circuit including a diode or a transistor.

Ultrafast optical probing of an ionized molecule with different pulse durations reveals details of the dynamics of vibrational excitations.

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

A new model yields insights about fermionic pairing in ultracold gases.

A trapped ion reveals the difference between a quantum particle executing a random walk and its classical version.

Cavity cooling maintains the coherence of the internal states of a positively charged ion, which is essential for the storage of quantum information.

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.

Patterns of ultracold atoms in an optical lattice can be engineered on a microscale by selectively removing atoms from individual sites.

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.

Weakly bound three-body states have now been observed in mixtures of two different ultracold atoms.

An optical-lattice clock based on atoms with spin-1/2 nuclei could potentially challenge the current clock standard.

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.