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Ultracold atoms

Facts for Prelims (FFP)


Source: TH

 Context: Researchers at the Raman Research Institute (RRI) have developed a new image-correction technique to enhance the study of cold atoms, particularly those at absolute zero temperatures.

  • This technique eliminates 50% of unwanted interference fringes in images, crucial for understanding the quantum mechanics properties of cold atoms.
  • Traditional imaging techniques suffer from interference fringes, reducing result quality and accuracy in parameters like atom number and temperature.
  • The new algorithm, detailed in a recent paper in Applied Optics, significantly reduces interference fringes and improves temperature uncertainty in cold Rubidium atoms by 50%.

This technique holds promise for the widespread application of absorption imaging in the study of ultracold atoms


 In condensed matter physics, an ultracold atom is an atom with a temperature close to absolute zero. At these temperatures, an atom’s quantum-mechanical properties become important.


Ultracold gases are ensembles of atoms held at a temperature close to absolute zero. Such systems enable the creation of exotic phenomena such as Bose–Einstein condensation

The field of quantum gases or ultracold atoms is the fastest expanding and most interdisciplinary field in physics today. The experimental branch of this field uses the techniques of atomic, molecular, and optical physics to study many-body systems consisting of extremely cold-trapped atoms.