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Optical switching

Polariton diode microcavities

A transition between strong and weak coupling regimes in a polariton diode microcavity yields optically controlled switching of current. Researchers show bistable cycles for optical powers two to three orders of magnitude less than typical schemes.

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Figure 1: Schematic structure of a microcavity polariton diode structure.
Figure 2: Experimental (black) and simulated (green) photocurrent as a function of the optical excitation power.

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Kavokin, A. Polariton diode microcavities. Nature Photon 3, 135–136 (2009). https://doi.org/10.1038/nphoton.2009.17

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