ERA NanoSci - Optical interface for gate-controlled quantum dots

• Applicant: Dr. Elisabeth Reiger
• Subject Area: Experimental Condensed Matter Physics ; Theoretical Chemistry: Electronic Structure, Dynamics, Simulation
• Term: from 2009 to 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 119665874

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.

• DFG Programme: Research Grants
• International Connection: Israel, Netherlands
• Participating Persons: Professor Dr. Erik Bakkers; Professor Dr. David Gershoni; Professor Dr. Valery Zwiller