Cooling and trapping is a set of experimental techniques used to reduce the kinetic energy of particles, typically atoms or ions, and confine them spatially for precision measurements and quantum control. Laser cooling methods, such as Doppler and sub-Doppler cooling, use resonant light to induce momentum exchange that lowers atomic velocities, while magneto-optical traps (MOTs) combine inhomogeneous magnetic fields with polarized light to provide both cooling and restoring forces. Additional mechanisms, including evaporative cooling and optical or electromagnetic trapping potentials, further reduce temperatures toward the quantum degenerate regime, enabling studies of ultracold gases, atomic clocks, quantum simulation, and controlled quantum information processing.
Researchers from the technical universities of Delft and Munich have invented a new type of molecular trap that can hold a single protein in place for hours to study its natural behavior—a million times longer than before. ...
Bio & Medicine
Aug 31, 2021
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258
Led by Justus Ndukaife, assistant professor of electrical engineering, Vanderbilt researchers are the first to introduce an approach for trapping and moving a nanomaterial known as a single colloidal nanodiamond with nitrogen-vacancy ...
Nanophysics
Jul 30, 2021
0
1763
Researchers at ETH Zurich have trapped a tiny sphere measuring a hundred nanometres using laser light and slowed down its motion to the lowest quantum mechanical state. This technique could help researchers to study quantum ...
Nanophysics
Jul 15, 2021
1
5916
