University of Iowa researchers create telecom-band single-photon quantum dots

5 articles · Updated · Iowa Now · Apr 29

Led by physicist Ravitej Uppu, the team used nanohole etching and gallium antimonide at Iowa's Molecular Beam Epitaxy facility; the study appears in ACS Nano.
The dots emit photons directly in the telecommunications band, avoiding wavelength conversion that can cause major information loss, while deeper nanoholes produced cleaner, more stable emission than shallower ones.
Researchers say the work could support secure quantum networks, low-power lasers, fiber-optic and photonic-chip technologies, plus infrared imaging applications in military and medical fields.

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