Optically Loaded Semiconductor Quantum Memory Register
Daniel C. Kim, Andrey A. Kiselev, Richard S. Ross, Matthew T. Rakher, Cody Jones, Thaddeus D. Ladd · Physical Review Applied · 2016
Long-distance quantum communication requires transmitting, buffering, and processing quantum information via nodes called quantum repeaters. Unfortunately, current technology is suited for either communication or storage, but not both simultaneously. To address this challenge, the authors propose an all-semiconductor hybrid quantum device that capacitively couples an optically active quantum-dot molecule to a gated-dot array. This optoelectronic device, which could be orders of magnitude faster than today's repeaters, emits a photon whose polarization is entangled with the electron spins in the array.