28 March 2000 Coherent control and quantum correlations in quantum-well semiconductor microcavity
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Proceedings Volume 3940, Ultrafast Phenomena in Semiconductors IV; (2000) https://doi.org/10.1117/12.381471
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States
The normal modes in a nonperturbatively coupled quantum-well semiconductor microcavity are linear superpositions of the QW exciton and cavity mode when the QW exciton transition is resonant with the cavity mode. When the lower normal mode is excited by a phase-locked pair of optical pulses, the nonlinear response of a probe pulse tuned to the upper mode is controlled. Thus the normal modes are coupled in their nonlinear optical response due to the nonlinearity of the exciton underlying the two normal modes. The cavity enhancement of the excitonic nonlinearity gives rise to a large signal; modulating the relative phase of the excitation pulses produces a differential reflectivity of up to 10%. Besides the coherent control of normal modes which is explainable with in the frame of semiclassical models, we observe a purely quantum mechanical phenomenon in our system. The quantum correlations between the field and carrier density lead to intraband coherences which live much longer than the interband dephasing time.
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Y. S. Lee, Theodore B. Norris, Mackillo Kira, Frank Jahnke, Stephan W. Koch, Galina Khitrova, Hyatt M. Gibbs, "Coherent control and quantum correlations in quantum-well semiconductor microcavity", Proc. SPIE 3940, Ultrafast Phenomena in Semiconductors IV, (28 March 2000); doi: 10.1117/12.381471; https://doi.org/10.1117/12.381471

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