Final published version
Licence: CC BY-NC
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2013 |
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Host publication | 18th International Conference on Ultrafast Phenomena, UP 2012 |
Publisher | EDP Sciences |
Number of pages | 3 |
Volume | 41 |
ISBN (print) | 9782759809561 |
<mark>Original language</mark> | English |
Event | 18th International Conference on Ultrafast Phenomena, UP 2012 - Lausanne, Switzerland Duration: 8/07/2012 → 13/07/2012 |
Conference | 18th International Conference on Ultrafast Phenomena, UP 2012 |
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Country/Territory | Switzerland |
City | Lausanne |
Period | 8/07/12 → 13/07/12 |
Conference | 18th International Conference on Ultrafast Phenomena, UP 2012 |
---|---|
Country/Territory | Switzerland |
City | Lausanne |
Period | 8/07/12 → 13/07/12 |
Phase-locked multi-terahertz transients map out the full photonic bandstructure of a one-dimensional photonic crystal while a 12-fs control pulse activates ultrastrong interaction on a sub-cycle time scale with quantized electronic transitions in semiconductor quantum wells. We trace the build-up dynamics of a large vacuum Rabi splitting and observe an unexpected asymmetric formation of the upper and lower polariton bands. The pronounced flattening of the photonic bands causes a slow-down of the group velocity by one order of magnitude on the time scale of the oscillation period of light.