Andreas Wallraff

[11] In 2002, he left Europe to work as a postdoctoral researcher with Robert J. Schoelkopf within the Department of Applied Physics at Yale University in New Haven, Connecticut.

[11] During this time, he was an author on papers regarding the coupling of superconducting qubits via a cavity bus and the coherent interaction of a single photon to a Cooper-pair box, among others.

[7][13][14] In 2004 he was appointed as an associate research scientist in the Department of Applied Physics at Yale and in June 2005 he was elected as a tenure-track assistant professor at ETH Zurich.

Since January 2006, Wallraff has held a professorship position at ETH Zurich where he is the head of the Quantum Device Lab within the Laboratory for Solid State Physics.

[31][32] He is also a member of the Scientific Committee for the Swiss National Science Foundation National Center of Competence in Research (NCCR) in Quantum Science and Technology (QSIT),[33] a member of the Global Future Council for the Future of Computing at the World Economic Forum,[34] and an Associate Fellow of the Canadian Institute for Advanced Research.

A chip with four superconducting transmon qubits made by Andreas Wallraff and colleagues. Two of the qubits were used in the experiment which led to the publication of "Digital Quantum Simulation of Spin Models with Circuit Quantum Electrodynamics" in Physical Review X in June 2015.
"A gate-defined GaAs double quantum dot (DQD) and a frequency-tunable high impedance resonator realized using an array of superconducting quantum interference devices ... [This] false-color optical micrograph of a representative device [indicates] the substrate (dark gray), the superconducting structures (light gray), the gold top gates (yellow) forming the DQD, and its source and drain leads and contacts (blue)." [ 28 ]