2015
DOI: 10.1088/1367-2630/17/10/103001
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Sympathetic cooling and detection of a hot trapped ion by a cold one

Abstract: We investigate the dynamics of an ion sympathetically cooled by another laser-cooled ion or small ion crystal. To this end, we develop simple models of the cooling dynamics in the limit of weak Coulomb interactions. Experimentally, we create a two-ion crystal of Ca + and Al + by photo-ionization of neutral atoms produced by laser ablation. We characterize the velocity distribution of the laser-ablated atoms crossing the trap by time-resolved fluorescence spectroscopy. We observe neutral atom velocities much hi… Show more

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Cited by 42 publications
(41 citation statements)
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“…Experiments are conducted in the linear Paul trap that was described in [35]. A 5 m long, polarizationmaintaining, fused silica fiber guides the ∼2 ps long pulses to the ion trap.…”
Section: Methodsmentioning
confidence: 99%
“…Experiments are conducted in the linear Paul trap that was described in [35]. A 5 m long, polarizationmaintaining, fused silica fiber guides the ∼2 ps long pulses to the ion trap.…”
Section: Methodsmentioning
confidence: 99%
“…3.1. Trapping, cooling and motional analysis of two-ion Ca + /Al + crystals As described in [32], a Ca Al + + ion crystal is created by loading an Al + via laser ablation. In experiments probing the intercombination line, mixed ion crystal lifetimes of several hours are typically observed, limited by background gas collisions leading to ion loss or chemical reactions giving rise to conversion of atomic ions to unwanted molecular ions.…”
Section: Resultsmentioning
confidence: 99%
“…The experimental apparatus that we designed for quantum logic experiments with Ca + and Al + ions has been previously described in detail in the [32]. In the following, we provide a brief summary of its main features.…”
Section: Experimental Apparatusmentioning
confidence: 99%
“…For each of these cycles, the frequency shift Δf is measured, as is shown in panel II of figure 2, and the momentum exchange q extracted by using equation (5).…”
Section: Characterization Of the Momentum Exchangementioning
confidence: 99%
“…Therefore the degree of control of all the particle dynamics during the evaporation processes determine the properties of the deposited surface layer [18]. Different techniques have been developed to observe the dynamics and interaction of the particles when they are in the gaseous state, such as, for example, time of flight experiments or Doppler shift methods [5,19,20]. They require, however, the implementation of expensive and complex equipment that is not always present in regular laboratories dedicated to surface science.…”
Section: Introductionmentioning
confidence: 99%