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Over the recent decades a wealth of controllable quantum systems has become experimentally accessible. The control over the quantum state and its evolution, as well as its precise measurement, opens up new possibilities for applications in metrology and quantum information. Our research addresses theoretically the challenges and opportunities for the implementation of concepts of quantum information in such systems.
Towards this goal, a precise knowledge about the properties of the system is necessary, which for systems of increasing size and complexity becomes more and more challenging in practice. To address this, I develop methods linked to the efficient characterization and measurement of quantum systems.
Research topics
Research topics
Multiparameter theory
Sensitivity limits
Non-Gaussian quantum states
Role of quantum correlations
Superresolution quantum imaging
Multipartite entanglement detection
Continuous and/or discrete variables
Quantum resources from coherence to Bell nonlocality
Preservation of entanglement under decoherence
Quantum phase transitions
Quantum simulations
Spectroscopy
System-environment correlations
Experimental platforms
Experimental platforms
Cold Atoms and BECs
Cold Atoms and BECs
Discrete-variable spin systems
Particle numbers ~10^1-10^6
Trapped Ions
Trapped Ions
Discrete (electronic) and continuous (motional) variables
Particle numbers ~10^1-10^2
Photons
Photons
Multimode quantum optics (Continuous-variable, non-fixed particle number)
Polarization states (discrete variables)
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