ERA NanoSci - Optical interface for gate-controlled quantum dots

Quantum information can take different forms, among which photon polarization is most useful for long distance communication while single electron spin is most useful for qubits interactions. However, no quantum interface between a single-electron spin and a single-photon polarization has yet been demonstrated. In this project we suggest to interface optically active quantum dots generating single photons with gate-controlled quantum dots controlling single electron spins. In our scheme, the electron spin quantum dots are controlled by electrical gates and the coupling between the two types of quantum dots will also be controlled by nanometer scale gates. Our ultimate aim is to coherently interface two quantum dots with different functionalities: an optically active quantum dot with a gatedefined quantum dot via a dynamic control of the local potential to convert single electrons into single photons.