Optically Addressable Spin Qubits for Quantum Networks and Quantum Computing


03 Aug - 07 Aug 2021


Physikzentrum Bad Honnef

Scientific organizers:

Prof. Dr. David Hunger, Karlsruher Institut für Technologie • Dr. Andreas Walter, Lund University, Sweden • Dr. Kangwei Xia, U Stuttgart

Quantum technologies could revolutionize specific areas such as secure communication or computing. The basic building blocks required to realize quantum devices are qubits which can be controlled, interfaced and read out. Optically addressable spins represent a particularly promising choice since they have the proven potential to serve as long-lived qubits, while the optical interface enables efficient and scalable control and readout as well as interconnection of qubits over large distances. In recent years, several material platforms have been demonstrated that allow one to implement single or few spin qubits that serve as the elementary building blocks of quantum devices. Elementary demonstrations of coherent quantum control, spin-photon and spin-spin entanglement, quantum gates, and quantum network primitives could be successfully shown. Still, it remains a challenging task to develop this further towards devices and scalable systems with use for applications e.g. for quantum computation and quantum communication.

The aim of this workshop is to bring together the sub-fields of several promising platforms such as rare-earth-ion-doped solids, color centers in diamond and silicon carbide, quantum dots, and trapped ions, who all share the fundamental aspect of optically addressable spins. The goal is to provide an overview of the experimental and theoretical state-of-the-art with a focus on quantum computing and memory-based quantum communication, and to encourage interactions and exchange of ideas between the different fields.
We invite experts and researchers at all career stages to join and contribute to the seminar.

The conference language will be English. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants.