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Correlations of a quantum system in real and momentum space (Prof. S. Jochim)

  • Datum: 22.05.2018
  • Uhrzeit: 14:30 - 15:30
  • Vortragender: Prof. Dr. Selim Jochim
  • Ultracold Quantum Gases Group, Physikalisches Institut, Universität Heidelberg
  • Raum: New Lecture Hall, Room B 0.32
  • Gastgeber: MPQ
The properties of a many body system are encoded in correlations between the particles.

For many paradigmatic cases they can be relatively simple in nature, such as the coherence properties of a superfluid, where all particles occupy the same momentum mode. Complex correlations can lead to unexpected properties of materials, such as a very high critical temperature for superfluidity in cuprates. Determining such correlations and identifying those responsible for such stunning phenomena is one of the key problems of modern physics. Using a single-particle sensitive imaging scheme, we extract spin-resolved position and momentum correlation functions. We apply this method to a Fermi-Hubbard dimer with tunable interactions and separately observe the emergence of entanglement between the spin and spatial modes of the system. Our method gives access to the physically relevant correlation functions in lattice and continuum quantum systems from the few- to the many-body limit.

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