Browse Physics

By measuring hydrogen line emission with an atomic clock hundreds of kilometers away, researchers place strict limits on possible corrections to relativity.

Researchers have trapped a single atom in a tiny cavity, controlling its motion, position, and coupling to photons.

Cylindrically shaped trap allows Bose-Einstein condensate to move freely in all three directions.

Atom interferometry may enable ways to measure gravitational waves without the destructive influence of laser fluctuations.

A magnetometer based on laser measurements of atomic energy levels can detect a magnetic field one hundred billion times smaller than the Earth’s.

Defects in diamond could be used to engineer portable timekeeping devices as precise as modern atomic clocks, according to a new theoretical proposal.

A torus of trapped cold atoms could be used as a rotation sensor.

Light stored in a Bose-Einstein condensate can be manipulated with light to create an optical AND gate.

Field patterns produced near nanoparticles could allow closely spaced traps for ultracold atoms.

Individual neutral atoms trapped in optical tweezers have been cooled to their quantum ground state, raising hopes that they can be used to process quantum information.

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

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.

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

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.

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.

Singly ionized helium-6 is an ideal atom for testing the quantum mechanical response of electrons to a decaying nucleus.

An optomechanical system in which light and matter exchange roles promises new kinds of quantum states.