期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.180504
关键词
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资金
- NSF [1521374]
- AFOSR Quantum memories MURI
- ARL-CDQI [W911NF-15-2-0061]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1521374] Funding Source: National Science Foundation
We demonstrate low-loss measurement of the hyperfine ground state of rubidium atoms by state dependent fluorescence detection in a dipole trap array of five sites. The presence of atoms and their internal states are minimally altered by utilizing circularly polarized probe light and a strictly controlled quantization axis. We achieve mean state detection fidelity of 97% without correcting for imperfect state preparation or background losses, and 98.7% when corrected. After state detection and correction for background losses, the probability of atom loss due to the state measurement is < 2% and the initial hyperfine state is preserved with > 98% probability.
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