PHYSICAL SCIENCES

Katsaros Group

Nanoelectronics

Computers are becoming ever more powerful due to the continuous miniaturization of transistors. In his research, Georgios Katsaros uses low-dimensional semiconductor materials for the fabrication of nanodevices. With these nanodevices, the solid-state physicist investigates the fundamental physical concepts on which quantum computing could be based in the future.

Georgios Katsaros develops semiconductor nanodevices and studies the quantum effects that appear when these nanotransistors are cooled down. One quantum mechanical property of a charge carrier is its spin. The spin of a charge carrier can be used in order to create a quantum bit. Katsaros investigates such quantum bits or qubits by manipulating them with microwave signals. In classic computers, a bit can be in only one of two states, zero or one. In quantum computers, a qubit can be both zero and one at the same time. By combining semiconductor nanodevices with superconductors, the Katsaros group is also aiming to study Majorana fermions. These have been suggested as building blocks for a topological quantum computer in which quantum information would be protected from environmental perturbations.

Group Leader


On this site:


Team


Current Projects

Towards hole spin qubits and Majorana fermions in Germanium | Hybrid semiconductor-superconductor quantum devices | Hole spin orbit qubits in Ge quantum wells


Publications

Ridderbos J, Brauns M, Shen J, de Vries FK, Li A, Bakkers EPAM, Brinkman A, Zwanenburg FA. 2018. Josephson effect in a few-hole quantum dot. Advanced Materials. 30(44). View

Hollmann A, Jirovec D, Kucharski M, Kissinger D, Fischer G, Schreiber LR. 2018. 30 GHz-voltage controlled oscillator operating at 4 K. Review of Scientific Instruments. 89(11). View

Vukušić L, Kukucka J, Watzinger H, Milem JM, Schäffler F, Katsaros G. 2018. Single-shot readout of hole spins in Ge. Nano Letters. 18(11), 7141–7145. View

Watzinger H, Kukucka J, Vukusic L, Gao F, Wang T, Schäffler F, Zhang J, Katsaros G. 2018. A germanium hole spin qubit. Nature Communications. 9(3902). View

Vukušić L. 2018. Charge sensing and spin relaxation times of holes in Ge hut wires, IST Austria, 103p. View

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Career

since 2016 Assistant Professor, IST Austria
2012 – 2016 Group Leader, Johannes Kepler University, Linz, Austria
2011 – 2012 Group Leader, Leibniz Institute for Solid State and Materials Research, Dresden, Germany
2006 – 2010 Postdoc, CEA, Grenoble, France
2006 PhD, Max Planck Institute for Solid State Research, Stuttgart, Germany
2001 – 2002 Research Assistant, National Center for Scientific Research “Demokritos”, Athens, Greece


Selected Distinctions

2015 Elected member of the Young Academy of the Austrian Academy of Sciences (ÖAW)
2013 ERC Starting Grant
2013 FWF START Award
2012 FWF Lise Meitner Fellowship
2011 Marie Curie Carrier Integration Grant


Additional Information

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Open Katsaros group site



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