Issue |
EPL
Volume 116, Number 5, December 2016
|
|
---|---|---|
Article Number | 53001 | |
Number of page(s) | 5 | |
Section | Atomic, Molecular and Optical Physics | |
DOI | https://doi.org/10.1209/0295-5075/116/53001 | |
Published online | 11 January 2017 |
Two-dimensional localization of an atom with sub-half-wavelength spatial resolution via coherently controlled spontaneous emission
1 School of Science, Jilin Institute of Chemical Technology - Jilin 132022, China
2 Department of Physics, Harbin Institute of Technology - Harbin 150001, China
Received: 28 September 2016
Accepted: 20 December 2016
We propose a scheme for two-dimensional sub-half-wavelength atom localization using two lasers with equal frequencies, and obtain the analytical expression of conditional position probability (CPP) using a spontaneous-emission spectrum for a four-level atom which passes through two-dimensional orthogonal standing-wave fields. The quantum interference effect between two decay channels leads to extreme spectral narrowing and quenching of spontaneous emission in some regions of the standing-wave field, which results in the appearance of a high-spatial-resolution localization peak. The two-dimensional sub-half-wavelength atom localization is obtained with high precision and high spatial resolution by adjusting the relative phase and detuning.
PACS: 32.80.Qk – Coherent control of atomic interactions with photons / 42.50.Ct – Quantum description of interaction of light and matter; related experiments
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.