Publication Date:
2018-05-12
Description:
Author(s): H. A. Nguyen, T. Grange, B. Reznychenko, I. Yeo, P.-L. de Assis, D. Tumanov, F. Fratini, N. S. Malik, E. Dupuy, N. Gregersen, A. Auffèves, J.-M. Gérard, J. Claudon, and J.-Ph. Poizat Optical nonlinearities usually occur at large intensities, but discrete transitions allow for giant nonlinearities operating at the single-photon level. Here, the authors demonstrate a two-mode giant nonlinearity with a single semiconductor quantum dot, embedded in a broadband photonic wire antenna. They exploit two detuned optical transitions associated with the exciton-biexciton quantum-dot level scheme. The reflection of one laser beam is controlled by the other beam with a threshold power as low as ten photons per exciton lifetime (1.6 nW). Such a two-color nonlinearity opens up appealing perspectives for the realization of integrated ultralow-power logical gates and optical quantum gates. [Phys. Rev. B 97, 201106(R)] Published Fri May 11, 2018
Keywords:
Electronic structure and strongly correlated systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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