| Autor: |
Hayat, Alex, Lange, Christoph, Rozema, Lee A., Darabi, Ardavan, van Driel, Henry M., Steinberg, Aephraim M., Nelsen, Bryan, Snoke, David W., Pfeiffer, Loren N., West, Kenneth W. |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 109, 033605 (2012) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.109.033605 |
| Popis: |
We present experimental observations of a non-resonant dynamic Stark shift in strongly coupled microcavity quantum well exciton-polaritons - a system which provides a rich variety of solid-state collective phenomena. The Stark effect is demonstrated in a GaAs/AlGaAs system at 10K by femtosecond pump-probe measurements, with the blue shift approaching the meV scale for a pump fluence of 2 mJcm^-2 and 50 meV red detuning, in good agreement with theory. The energy level structure of the strongly coupled polariton Rabi-doublet remains unaffected by the blue shift. The demonstrated effect should allow generation of ultrafast density-independent potentials and imprinting well-defined phase profiles on polariton condensates, providing a powerful tool for manipulation of these condensates, similar to dipole potentials in cold atom systems. |
| Databáze: |
arXiv |
| Externí odkaz: |
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