Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.073601
Keywords
-
Categories
Funding
- Alexander von Humboldt Foundation
- Austrian Science Fund [P31115]
- Austrian Science Fund (FWF) [P31115] Funding Source: Austrian Science Fund (FWF)
Ask authors/readers for more resources
This article experimentally and theoretically investigates collective radiative effects in an ensemble of cold atoms coupled to a single-mode optical nanofiber. The results reveal the microscopic dynamics of the system and the progressive growth of collective interactions between atoms and a guided photon. The experimental measurements demonstrate superradiant decays in the forward-propagating guided mode and the progressive growth of the collective response of the atomic ensemble.
We experimentally and theoretically investigate collective radiative effects in an ensemble of cold atoms coupled to a single-mode optical nanofiber. Our analysis unveils the microscopic dynamics of the system, showing that collective interactions between the atoms and a single guided photon gradually build up along the atomic array in the direction of propagation of light. These results are supported by time-resolved measurements of the light transmitted and reflected by the ensemble after excitation via nanofiber-guided laser pulses, whose rise and fall times are shorter than the atomic lifetime. Superradiant decays more than 1 order of magnitude faster than the single-atom free-space decay rate are observed for emission in the forward-propagating guided mode, while at the same time, no speed-up of the decay rate is measured in the backward direction. In addition, position-resolved measurements of the light that is transmitted past the atoms are performed by inserting the nanofiber-coupled atomic array in a 45-m-long fiber ring resonator, which allow us to experimentally reveal the progressive growth of the collective response of the atomic ensemble. Our results highlight the unique opportunities offered by nanophotonic cold atom systems for the experimental investigation of collective light-matter interaction.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available