Quantum Computing and Devices (QCD) group of Aalto University

General introduction 

The Quantum Computing and Devices (QCD) group of Aalto University was established in 2007. Our heaviest effort is on experimental low-temperature physics, but we also study quantum mechanics theoretically down to the fundamentals. Currently, we focus on the implementation of on-demand dissipation for superconducting quantum circuits and the related open quantum systems. We also develop ultrasensitive microwave detectors and on-chip components for controlling microwave photons, single-electron pumps, and quantum knots and monopoles in Bose-Einstein condensates.

Role in QMiCS

In the QMiCS project, the main task of the QCD group is to develop single-photon microwave detectors which will be employed by other partners, for example, in quantum teleportation experiments. Our main complementary expertise lies in ultrasensitive and fast bolometry. To this end, we recently demonstrated the finest energy resolution of a zeptojoule for thermal detectors using superconductor–normal-metal–superconductor proximity Josephson junctions. This technology will be further developed in QMiCS towards single-photon detection in the microwave regime.

http://physics.aalto.fi/en/groups/qcd

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