Items tagged with "BEC"
A state of matter in which atoms or particles are chilled to such low energies that they ‘condense’ into a single quantum state.The atoms are bosonic in nature; that is, their total spin must possess an integral value, such as 0, 1, 2. Particles, like everything, have wave properties, such as wavelength. The trick is getting into a regime where the wave properties emerge. The wavelength (called Debroglie wavelength) of an atom is related to its temperature—the colder the atom, the longer the wavelength. At room temperature, atoms can be treated like billiard balls bouncing around.
JQI Researchers have reported* the first observation of the "spin Hall effect" in a Bose-Einstein condensate.This is a step toward applications in "atomtronics"—the use of ultracold atoms as circuit components.
Phil Schewe discusses how matter, such as atoms and electrons, can display wave-like properties. Steve Rolston describes early scattering experiments. Gretchen Campbell talks about matter waves in the context of modern Bose-Einstein condensate experiments.
In a recently accepted Physical Review Letter, JQI researchers present a novel method to measure the strength of two of rubidium’s atomic transitions with unprecedented accuracy.
PFC-supported scientists at JQI have created the first controllable atomic circuit that functions analogously to a superconducting quantum interference device (SQUID) and allows operators to select a particular quantum state of the system at will.