6533b852fe1ef96bd12ab81b
RESEARCH PRODUCT
Preservation of quantum coherence after exciton-exciton interaction in quantum wells
Ulrich RösslerG. AichmayrLuis ViñaRichard T. PhillipsNúria GarroS. P. Kennedysubject
PhysicsCondensed matter physicsScatteringExcitonSecondary emissionCavity quantum electrodynamicsPhotodetectionAtomic physics530 PhysikQuantumQuantum wellCoherence (physics)description
The dynamics of exciton-exciton interaction in quantum wells has been investigated by monitoring the time-resolved resonant secondary emission that follows excitation with linearly and circularly polarized light. Preservation of quantum beating in the cross-polarized emission demonstrates that spin relaxation can take place, for some scattering channels, without total quantum coherence loss. Interexciton electron exchange is the scattering mechanism that explains the persistence of the beating and, since it is sensitive to the fine structure of excitons, the shift by pi in the phase of the beating observed in the experiment.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-03-17 |