How to Cool Down a Quantum Bit - the Quantum-Circuit Refrigerator
Article: http://dx.doi.org/10.1038/ncomms15189
Quantum Computing and Devices (QCD) Labs led by Mikko Möttönen has demonstrated a novel type of a refrigerator which directly cools down the functional degrees of freedom of quantum electric devices. This cooler is referred to as the quantum-circuit refrigerator (QCR). In their work just published in Nature Communications, the team experimentally demonstrates cooling of a linear superconducting resonator. Theoretically, the refrigeration principle works also for superconducting qubits which are typically slightly non-linear resonators. These kind of qubits are currently the most promising building blocks of the future large-scale quantum computer. Thus the QCR may be useful in the initialization of the quantum memory and other emerging quantum technological devices.
Group contact:
http://physics.aalto.fi/en/groups/qcd/
This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No 681311 (QUESS)