Research lines

The experiments moved to the university of Mainz since spring 2010.

Quantum information processing (QIPC) is understood as the application of genuine quantum effects as superposition and entanglement for computational tasks, secure information transfer, simulation of complex states of matter, improvement of measurements down to the fundamental limits of quantum mechanics, and the studies of decoherence.

We are interested in scalable physical qubit systems allowing for quantum logic operations and at the same time for a high isolation to the environment zu keep decoherence small.

The European and US roadmap for quantum information processing outline the field.
In the Ulm experiments we follow three main research lines using:
Ion quantum computing: Cold crystals of ions trapped in microscopic Paul traps
Electron quantum computing: Arrays of single electrons in microscopic cryogenic trap
Solid state quantum computing: Single doping ions implanted in solid state matrixes and crystals

From the theory side we pursue
Quantum optimal control theory for scalable QIPC: Fidelity-optimized quantum operations with different physical qubits (atoms, ions, solid-state systems)

 We acknowledge funding by the Landesstiftung Baden-Württemberg, the DFG, the BMBF, and the European Commission.

Recent highlight:
published paper in Physical Review Letters 102, 070501 (2009) : W. Schnitzler, N. M. Linke, R. Fickler, J. Meijer, F. Schmidt-Kaler, and K. Singer, "Deterministic Ultracold Ion Source targeting the Heisenberg Limit", pdf, Press release in german