Fast thermometry for trapped ions using dark resonances
| Autor: | J. Roßnagel, Karl Nicolas Tolazzi, Ferdinand Schmidt-Kaler, Kilian Singer |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
Range (particle radiation) Quantum Physics Statistical Mechanics (cond-mat.stat-mech) Atomic Physics (physics.atom-ph) General Physics and Astronomy Resonance FOS: Physical sciences Laser Temperature measurement Fluorescence law.invention Ion Physics - Atomic Physics Thermalisation law Atomic physics Laser-induced fluorescence Quantum Physics (quant-ph) Condensed Matter - Statistical Mechanics |
| Popis: | We experimentally demonstrate a method to determine the temperature of trapped ions which is suitable for monitoring fast thermalization processes. We show that observing and analyzing the lineshape of dark resonances in the fluorescence spectrum provides a temperature measurement which accurate over a large dynamic range, applied to single ions and small ion crystals. Laser induced fluorescence is detected over a time of only $20\,\mu$s allowing for rapid determination of the ion temperature. In the measurement range of $10^{-1}-10^{+2}\,$mK we reach better than $15\,\%$ accuracy. Tuning the cooling laser to selected resonance features allows for controlling the ion temperatures between $0.7\,$mK and more than $10\,$mK. Experimental work is supported by a solution of the 8-level optical Bloch equations when including the ions classical motion. This technique paves the way for many experiments comprising heat transport in ion strings, heat engines, non-equilibrium thermodynamics or thermometry of large ion crystals. |
| Databáze: | OpenAIRE |
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