HYBRID: Artificial Atoms, Nanophotonics, and Quantum Control – Ingredients for the Quantum Internet

This lecture will be held at Magnus-Haus and can be followed online, too. Follow the links above to register your attendance in person on site or to receive login details for online attendance.

The 2G-plus rule still applies. The additional testing requirement does not apply to those who have been fully vaccinated (two vaccinations plus a booster shot), those who have been vaccinated twice within the last three months still waiting for a booster shot (including recently vaccinated convalescents), or those who have been convalesced within the last three months (including recently convalesced vaccinees). An electronically verifiable proof of vaccination or a Covid-19 certificate of recovery and an identity document must be presented at the entrance. All visitors are required to wear mouth/nose coverings (except during the lecture) and to disinfect their hands at the entrance. The number of on-site participants is limited for infection control reasons. Please cancel by phone or email if you are unable to attend so that those waiting can move up. No admission after the start of the event. Please do not participate if you have symptoms of a possible SARS Covid 19 infection (cold symptoms).

Topic: Quantum networks enable communication that is physically secure against cyber-attacks, as well as the ability to connect quantum computers. A central resource for such networks are optically active spin qubits. For this, artificial atoms in diamond satisfy two key requirements: they can serve as a quantum memory and can transfer the stored information to single photons that can travel through telecommunication fibres. Together, this enables the realisation of quantum repeaters that can overcome losses in these fibres — the fundamental requirement to build long-distance networks. In this presentation I will introduce the idea of quantum networking and our contribution to developing quantum repeaters using artificial atoms, nanophotonics, and quantum control with the goal to enable the future quantum internet.

CV: Tim Schröder is leading the Integrated Quantum Photonics Group at the Department of Physics at Humboldt-University and the Joint Lab for Diamond Nanophotonics at the Ferdinand-Braun-Institut since October 2018. He received his Doctorate degree with distinction from Humboldt-University in 2012 awarded with the Carl-Ramsauer-Preis of the Physikalische Gesellschaft zu Berlin. As postdoc at MIT (2012–2016) his research focused on quantum control of spin defect centres in diamond nanostructures. As Assist. Prof. at the Niels Bohr Institute (2016–2018) he developed quantum dot spin control experiments. Funded by an ERC St. Gr., a BMBF Quantum Futur grant, and other collaborative BMBF and Einstein Foundation projects his group focusses on solid-state spin–photon interfaces for the realisation of quantum information processing.

Following the lecture, there will be a get-together where participants can exchange ideas with each other over pizza and drinks in the Remise and the garden of the Magnus-Haus.

The event is sponsored by the Wilhelm and Else Heraeus Foundation.