Cooling positronium to ultralow velocities with a chirped laser pulse train.

ABSTRACT: When laser radiation is skilfully applied, atoms and molecules can be cooled^1-3, allowing the precise measurements and control of quantum systems. This is essential for the fundamental studies of physics as well as practical applications such as precision spectroscopy^4-7, ultracold gases with quantum statistical properties^8-10 and quantum computing. In laser cooling, atoms are slowed to otherwise unattainable velocities through repeated cycles of laser photon absorption and spontaneous emission in random directions. Simple systems can serve as rigorous testing grounds for fundamental physics-one such case is the purely leptonic positronium^11,12, an exotic atom comprising an electron and its antiparticle, the positron. Laser cooling of positronium

SUBMITTER: Shu K 

PROVIDER: S-EPMC11424484 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature