Department Spins in Energy Conversion and Quantum Information Science

Working Groups

Quantum Information with Solid State Spins - QuISS

Group Leader: B. Naydenov

The research group "Quantum Information with Solid State Spins" (AG QuISS) is dedicated to the investigation of quantum materials that are crucial for the development of a quantum computer. The working group focuses on spin-based qubits. Such systems offer the possibility to design their quantum mechanical states with .atomic precision, so that the concepts of entanglement, coherent control and quantum measurement can be freely explored and used.

As a prominent example, the nuclear spin in a two-dimensional layer (for example in fluorographene, see figure) have long coherence times and a very large Hilbert space and could be the building block of a solid state quantum simulator. Their use as protected quantum registers, which can also be quickly manipulated and read out by means of magnetic resonance (NMR, EPR), has been demonstrated. For the readout process, AG QuISS concentrates on spin color centres (NV centre in diamond), which offer scalability and integration capability. With this unique physical system, quantum states at interfaces between diamond and nuclear spin-bearing molecules are investigated. Within the EPRoC project, the AG QuISS is in the process of putting an NV-based AFM into operation, which will allow magneto spectrometry with nanoscale resolution and high sensitivity.

From left to right: Lucas Tsunaki, Rozhan Mohammadibidmeshki, Maren Herrendörfer, Yannick Weise, Boris Naydenov, Michael Dotan and Erik Sieber.