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Proceedings Paper

Quantum complementarity of microcavity polaritons
Author(s): Wolfgang Langbein
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Paper Abstract

The spontaneous and self-stimulated parametric emission from a semiconductor microcavity after resonant pulsed excitation is measured. The emission of the lower polariton branch is resolved in two-dimensional momentum space, using either time-resolved or time-integrated detection. Employing two pump directions, we experimentally probe polariton quantum correlations by exploiting quantum complementarity. Polaritons in two distinct idler-modes interfere if and only if they share the same signal-mode so that "which-way" information cannot be gathered. The experimental results prove the existence of polariton pair correlations that store the "which-way" information.

Paper Details

Date Published: 8 February 2007
PDF: 9 pages
Proc. SPIE 6471, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV, 647109 (8 February 2007); doi: 10.1117/12.697280
Show Author Affiliations
Wolfgang Langbein, Cardiff Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 6471:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV
Marshall J. Cohen; Kong-Thon Tsen; Joseph P. Estrera; Jin-Joo Song, Editor(s)

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