| Autor: |
Grim JQ; US Naval Research Laboratory, Washington, DC, USA. joel.grim@nrl.navy.mil., Bracker AS; US Naval Research Laboratory, Washington, DC, USA., Zalalutdinov M; US Naval Research Laboratory, Washington, DC, USA., Carter SG; US Naval Research Laboratory, Washington, DC, USA., Kozen AC; US Naval Research Laboratory, Washington, DC, USA., Kim M; KeyW Corporation, Hanover, MD, USA., Kim CS; US Naval Research Laboratory, Washington, DC, USA., Mlack JT; US Naval Research Laboratory, Washington, DC, USA., Yakes M; US Naval Research Laboratory, Washington, DC, USA., Lee B; US Naval Research Laboratory, Washington, DC, USA., Gammon D; US Naval Research Laboratory, Washington, DC, USA. |
| Abstrakt: |
The quest for an integrated quantum optics platform has motivated the field of semiconductor quantum dot research for two decades. Demonstrations of quantum light sources, single photon switches, transistors and spin-photon interfaces have become very advanced. Yet the fundamental problem that every quantum dot is different prevents integration and scaling beyond a few quantum dots. Here, we address this challenge by patterning strain via local phase transitions to selectively tune individual quantum dots that are embedded in a photonic architecture. The patterning is implemented with in operando laser crystallization of a thin HfO 2 film 'sheath' on the surface of a GaAs waveguide. Using this approach, we tune InAs quantum dot emission energies over the full inhomogeneous distribution with a step size down to the homogeneous linewidth and a spatial resolution better than 1 µm. Using these capabilities, we tune multiple quantum dots into resonance within the same waveguide and demonstrate a quantum interaction via superradiant emission from three quantum dots. |
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