Abstract
We demonstrate an ultra-low light level optical modulator using a tapered nano fiber embedded in a hot rubidium vapor. The control and signal beams are co-propagating but orthogonally polarized, leading to a degenerate V-system involving coherent superpositions of Zeeman sublevels. The modulation is due primarily to the quantum Zeno effect for the signal beam induced by the control beam. For a control power of 40 nW and a signal power of 100 pW, we observe near 100% modulation. The ultra-low power level needed for the modulation is due to a combination of the Zeno effect and the extreme field localization in the evanescent field around the taper.
Original language | English (US) |
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Pages (from-to) | 22874-22881 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 19 |
Issue number | 23 |
DOIs | |
State | Published - Nov 7 2011 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics