A Fast, Deterministic Source of Cr Atoms
More Results
Single atom occupation probability, Pocc
- Gross behavior depends only on product λ of MOT loading rate and lifetime
- Without feedback: Pocc=λe-λ
- Perfect feedback: Pocc=λ/(1+λ)
- Detailed behavior depends separately on MOT loading rate and lifetime
- Describe with Monte Carlo Simulation
Figure 1. Single-atom occupation probability, Pocc, vs product of load
rate and MOT lifetime. Black circles indicate measurements. Blue solid line indicates
perfect feedback limit. Red line assumes a free-running MOT with Poisson distributed
atom number. Inset shows agreement between measurements and statistical spread of
Monte Carlo simulations (aqua bars) when perfect feedback limit does not apply.
Single atom ejection probability Peject
- Periodically dump MOT to investigate response of feedback in atom ejection
- Measure Peject = fraction of dumps that occur with one atom in MOT
- Monte Carlo Simulations agree with measurements
Figure 2. Single-atom ejection probability vs ejection rate. Black circles
indicate measurements, and the aqua band defines upper and lower bounds of
Monte Carlo simulations encompassing variations in experimental conditions.
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Online: May 2003
Last Updated: February 2008
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