Micromotion-Induced Limit to Atom-Ion Sympathetic Cooling in Paul Traps

摘要: We present, and derive analytic expressions for, a fundamental limit to the sympathetic cooling of ions in radio-frequency traps using cold atoms. The arises from work done by trap electric field during long-range ion-atom collision applies even zero-temperature atomic gas perfectly compensated trap. conclude that current experimental implementations, this collisional heating prevents access regimes single-partial-wave atom-ion interaction or quantized ion motion. determine conditions on mass ratio parameters for reaching s-wave regime ground state.