Polarization Properties of Single Quantum Dots in Nanowires

Abstract

We study the absorption and emission polarization of single semiconductor quantum dots in semiconductor nanowires. We show that the polarization of light absorbed or emitted by a nanowire quantum dot strongly depends on the orientation of the nanowire with respect to the directions along which light is incident or emitted. Light is preferentially linearly polarized when directed perpendicular to the nanowire elongation. In contrast, the degree of linear polarization is low for light directed along the nanowire. This result is vital for photonic applications based on intrinsic properties of quantum dots, such as generation of entangled photons. As an example, we demonstrate optical access to the spin states of a single nanowire quantum dot.

4 pages, 4 figures

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• Triggered single photons from a quantum dot
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• Single quantum dot nanowire LEDs
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Cited by in corpus (8)

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• Optical properties of single ZnTe nanowires grown at low temperature
• Quantum-confined single photon emission at room temperature from Silicon carbide tetrapods
• Polarization-dependent light extinction in ensembles of polydisperse, vertical semiconductor nanowires: A Mie scattering effective medium
• Highly linear polarized emission at telecom bands in InAs/InP quantum dot-nanowires by geometry tailoring