Sub-millikelvin spatial thermometry of a single Doppler-cooled ion in a Paul trap
| Autor: | S. Knunz, V. Batteiger, Theodor W. Hänsch, Maximilian Georg Herrmann, Thomas Udem, Guido Saathoff |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Condensed Matter::Quantum Gases
Point spread function Physics Atomic Physics (physics.atom-ph) FOS: Physical sciences Ion trapping Atomic and Molecular Physics and Optics Physics - Atomic Physics Ion symbols.namesake Quadrupole Thermal symbols Physics::Atomic Physics Laser detuning Ion trap Atomic physics Doppler effect |
| Zdroj: | Physical Review A. 85 |
| ISSN: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.85.023427 |
| Popis: | We report on observations of thermal motion of a single, Doppler-cooled ion along the axis of a linear radio-frequency quadrupole trap. We show that for a harmonic potential the thermal occupation of energy levels leads to Gaussian distribution of the ion's axial position. The dependence of the spatial thermal spread on the trap potential is used for precise calibration of our imaging system's point spread function and sub-milliKelvin thermometry. We employ this technique to investigate the laser detuning dependence of the Doppler temperature. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|