Spin-photon interfaces

The focus of the spin-photon interface group, led by T. Huber, is investigating semiconductor quantum dot-based spin qubit systems with the goal of building distributed quantum networks.

The spin of a charge in the quantum dot ground state can be used as a matter qubit to store information, which can be manipulated and read out efficiently using optics. Since the spin can be entangled with an emitted photon, distributed spin-spin entanglement can be created. By embedding the quantum dots into microcavities, the efficiency of the readout and the spin-photon entanglement generation can be enhanced.

The research topics include coherent spin manipulation, efficient spin readout, entanglement generation and the tunability of quantum dot transitions.