Objective
The consortium aims at investigations of quantum-coherent phenomena in super-conducting nanocircuits, based on Josephson junctions, and the analysis of the effect of dissipation. The major goals include development of Josephson quantum-bit circuits tolerant to external noise; analysis of the nature and statistical properties of noise using Josephson qubits; investigations of the fundamental Landau-Zener interference phenomena in driven quantum bits and exploration of their use for technologies for qubit manipulation and readout; development, description and optimisation of efficient Josephson quantum detectors.
Specifically, the research will focus on questions relevant for the development of quantum-coherent nanodevices and for the understanding of their behaviour:
(i) the theoretical investigation and experimental implementation of noise-tolerant Josephson quantum devices based on the use of topological protection of quantum ground-states: this includes studies of the simplest realizations based on tetrahedral quantum bits and on Josephson rhombi chains, both magnetically frustrated and frustrated via pi-junctions;
(ii) analysis of quantum-interference phenomena in Josephson qubit circuits and their use for qubit manipulation and read-out;
(iii) development of low-backaction, high-sensitivity fast quantum detectors, dispersive and based on the Landau-Zener interference patterns;
(iv) investigation of the effect of decoherence on the quantum-coherent phenomena in Josephson circuits, specifically, interference patterns and coherent transport; analysis of noise using quantum bits as spectral analysers.
As a result of our research in this project, we expect to provide the basis for operation of protected Josephson qubits; demonstrate high-efficiency quantum detectors; gather information on the properties of the noise sources that suppress coherence of these devices.
Fields of science (EuroSciVoc)
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Funding Scheme
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Coordinator
KARLSRUHE
Germany
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