University of PotsdamPhysics DepartmentInterdisciplinary Centre for Photonics

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ResearchPeoplePublicationsNewsLinksTeachingContact



Quantum information theory


Quantum many-body theory


Quantum optics


Cold atoms in optical lattices


Open quantum systems






Funding and projects

QQQ-Meeting


 

Open quantum systems:

No quantum systems is entirely isolated from its environment. This basic yet important fact is ultimately responsible for classical features to emerge in quantum systems. We work on how such classical features arise and can lead to exact instances of decohering systems. We are also interested in the mathematical foundations of the study of the dynamics of open quantum systems, related to the theory of dynamical semi-groups, asking for the degree of Markovianity of quantum dynamics. A core interest recently in the context of quantum systems interacting with complex baths is the study of quantum "mechanical" effects in mechanical systems that are cooled by means of exploiting radiation pressure.

For a comprehensive list of tutorials and review articles, see this link.


                                         
Selected group publications:
  • "Creating and probing macroscoping entanglement with light",
    Physical Review Letters 99, 250401 (2007).
  • "Exact decoherence to pointer states in free open quantum systems is universal",
    Physical Review Letters 92, 210401 (2004).
  • "Towards mechanical entanglement in nano-electromechanical devices",
    Physical Review Letters 93, 190402 (2004).
  • "Quantum and classical correlations in quantum Brownian motion",
    Physical Review Letters 89, 137902 (2002).
  • "Quantum evolution from a snapshot",
    arXiv:0711.3172.
  • "Hot entanglement in a simple dynamical model",
    Journal of Modern Optics 50, 881 (2003).