Ultrafast coherent control of excitons and exciton-polaritons in quantum nanostructure
We have demonstrated ultrafast coherent control of excitons and exciton-polaritons in semiconductor quantum nanostructures. An InGaAs/AlGaAs multi-quantum-well Bragg structure and an AlGaAs/GaAs crescent-shaped quantum wire structure were used as samples for the control of the exciton-polariton and excitons in the nanostructure. In the multi-quantum-well Bragg sample, a two-stage decay due to the super-radiant exciton-polariton mode is clearly observed under the resonance conditions. Highly sensitive coherent control measurement enables us to observe the dephasing characteristics in the crescent-shaped quantum wire sample, and a very fast dephasing time T-2 of between 200 fs and 300 fs with powder dependence was observed.
WOS:000175703200083
2002
41
4B
2660
2663
Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba, Ibaraki 3058568, Japan. Swiss Fed Inst Technol, IMO, Phys Dept, CH-1015 Lausanne, Switzerland. JST, Japan Sci & Technol Corp, CREST, Kawaguchi, Saitama 3320012, Japan. Komori, K, Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba Cent 2 1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan.
ISI Document Delivery No.: 553XW
Cited Reference Count: 10
Cited References:
BAUMBERG JJ, 1997, PHYS STATUS SOLIDI B, V204, P9
BELLESSA J, 1998, PHYS REV B, V58, P9933
BONADEO NH, 1998, SCIENCE, V282, P1473
HAYES GR, 1999, PHYS REV LETT, V83, P2837
HEBERLE AP, 1995, PHYS REV LETT, V75, P2598
KOMORI K, 1997, APPL PHYS LETT, V71, P3350
KOMORI K, 2000, JPN J APPL PHYS 1, V39, P2347
KOMORI K, 2001, OSA TRENDS OPTICS PH, V57, P205
MOROHASHI I, 2001, JPN J APPL PHYS 1, V40, P3012
WANG XL, 1995, APPL PHYS LETT, V66, P1506
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