Meng Khoon Tey et al 2009 New J. Phys. 11 043011 doi:10.1088/1367-2630/11/4/043011
Interfacing light and single atoms with a lens
Meng Khoon Tey1,5, Gleb Maslennikov1, Timothy C H Liew1, Syed Abdullah Aljunid1, Florian Huber2, Brenda Chng1, Zilong Chen3, Valerio Scarani1,4 and Christian Kurtsiefer1,4,5
Show affiliationsWe characterize the interaction between a single atom or similar microscopic system and a light field via the scattering ratio. For this, we first derive the electrical field in a strongly focused Gaussian light beam, and then consider the atomic response. Following the simple scattering model, the fraction of scattered optical power for a weak coherent probe field leads to unphysical scattering ratios above 1 in the strong focusing regime. A refined model considering interference between the exciting and scattered field into finite-sized detectors or optical fibers is presented, and compared with experimental extinction measurements for various focusing strengths.
- PACS
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32.80.-t Photoionization and excitation
42.50.Ct Quantum description of interaction of light and matter; related experiments
- Subjects
- Dates
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Issue 4 (April 2009)
Received 17 February 2009
Published 7 April 2009
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Interfacing light and single atoms with a lens
Meng Khoon Tey et al 2009 New J. Phys. 11 043011
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