The Schematic Illustrates the Microlens Device to Measure Dark Excitons in a Quantum Dot (IMAGE)

American Institute of Physics

The Schematic Illustrates the Microlens Device to Measure Dark Excitons in a Quantum Dot

Caption

The schematic illustrates the microlens device to measure dark excitons in a quantum dot. The left diagram depicts the spin-blockaded biexciton state that relaxes into a dark exciton and produces a photon; solid circles are electrons while empty ones are holes. The dark exciton then undergoes precession. To read the dark exciton, an extra charge carrier is introduced -- in this case, a spin-down electron.

Credit

Tobias Heindel

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