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EnglishWe report the external control of the intersubband polariton coupling by manipulating the carrier density in quantum wells resonantly coupled to a GaAs/AlGaAs microcavity. The electrons in the wells were tuned by means of a depletion gate Was or by utilizing charge transfer between the energetically aligned ground subbands of asymmetric tunnel-coupled quantum wells. We propose the use of tunnel-assisted control of the polariton ground state in an asymmetrically coupled quantum well for implementing ultrafast modulation of intersubband polaritons.
| Autori interni: | TREDICUCCI, ALESSANDRO (Secondo) |
| Autori: | Anappara, Aa; Tredicucci, Alessandro; Beltram, F; Biasiol, G; Sorba, L. |
| Titolo: | Controlling polariton coupling in intersubband microcavities |
| Anno del prodotto: | 2007 |
| Abstract: | We report the external control of the intersubband polariton coupling by manipulating the carrier density in quantum wells resonantly coupled to a GaAs/AlGaAs microcavity. The electrons in the wells were tuned by means of a depletion gate Was or by utilizing charge transfer between the energetically aligned ground subbands of asymmetric tunnel-coupled quantum wells. We propose the use of tunnel-assisted control of the polariton ground state in an asymmetrically coupled quantum well for implementing ultrafast modulation of intersubband polaritons. |
| Digital Object Identifier (DOI): | 10.1016/j.spmi.2007.03.005 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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