Thermalization of a trapped single atom with an atomic thermal bath

Rahul Sawant*, Anna Maffei, Giovanni Barontini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Downloads (Pure)


We studied a single atom trapped in an optical tweezer interacting with a thermal bath of ultracold atoms of a different species. Because of the collisions between the trapped atom and the bath atoms, the trapped atom undergoes changes in its vibrational states occupation to reach thermal equilibrium with the bath. By using Monte Carlo simulations, we characterized the single atom’s thermalization process, and we studied how this can be used for cooling. Our simulations demonstrate that, within known experimental limitations, it is feasible to cool a trapped single atom with a thermal bath.

Original languageEnglish
Article number2258
JournalApplied Sciences (Switzerland)
Issue number5
Publication statusPublished - 4 Mar 2021

Bibliographical note

Funding Information:
Funding: All authors are supported by the Leverhulme Trust Research Project Grant UltraQuTe (grant number RGP-2018-266). A.M. is supported by the Erasmus programme.


  • Heteronuclear interactions
  • Single atom
  • Thermalization

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes


Dive into the research topics of 'Thermalization of a trapped single atom with an atomic thermal bath'. Together they form a unique fingerprint.

Cite this