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Quantum technologies

Dieter Meschede's research group
Home AMO physics colloquia
  • Clive Emary

  • Invited speaker: Dr. Clive Emary
    Affiliation: Institut für Theoretische Physik, TU Berlin
    Title: Distinguishing quantum from classical transport with the Leggett-Garg inequality
    Time and room: 17:15 lecture hall IAP
    Abstract: The Leggett-Garg inequality, often described as a temporal Bell's inequality, sets a bound on the nature of correlations of a single system at different times. Violation of this inequality implies the absence of a macroscopic real, i.e. classical probabilistic, description of the system.

    In this talk I shall introduce the Leggett-Garg inequality and discuss how it can be used to gain insight into whether a transport process operates under classical or quantum-mechanical laws. I will discuss realisations with quantum dots and electron interferometers, as well as make a connection with the theory of full counting statistics.

  • Master talks

  • 17:00  Martin Pofahl: "Construction of Neuronal Connectivity Maps Using Selective Plane Illumination Microscopy"
    17:40  Anna Hambitzer: "Direct Synthesis Of Light Polarization For State-Dependent Transport of Atoms"
    18:40  Natalie Thau: "Fiber Cavities"
    19:20  Sebastian Manz: "Heterodyne Spectroscopy With Single Atoms In A High-Finesse Optical Cavity"
    Room: lecture hall IAP

  • Tobias Salger

  • Invited speaker: Dr. Tobias Salger
    Affiliation: d-fine GmbH
    Title: Modern Risk Management
    Time and room: 10:15 lecture hall IAP

  • Bachelor and Master talks

  • 16:00 Jonathan Zopes: "Einzelplatzdetektion im optischen Gitter unterhalb des Beugungslimits"
    16:40 Thomas Gehrmann: "An Optical Stokes Polarimeter for Optimized Spin-dependent Transport of Atoms"
    17:40 Deena Kim: "Deterministic Atom Sorting in Optical Lattices"
    18:20 Christian Lützler: "Fabrication of Optical Microfibers"
    Room: lecture hall IAP

  • A. Femius Koenderink

  • Invited speaker: Prof. Dr. A. Femius Koenderink
    Affiliation: AMOLF, Amsterdam
    Title: Subwavelength Plasmonic And Magnetic Resonators To Control Photons And Emitters
    Time and room: 17:15  lecture hall IAP
    Abstract: Controlling how photons are emitted, absorbed and redirected on the nanoscale is of great interest for quantum information, microscopy and nanoscale light sources. Nanophotonics increasingly explores the solutions that electrical engineers use to control RF waves using broadband antennas, which are very different from traditional cavity QED approaches.

    We explore how plasmonic and metamaterial scatterers allow to transpose RF antenna concepts to optics and quantum optics. Our research unravels how a resonant response to the magnetic field of light, combined with plasmonic resonances, gives rise to nanoscatterers and sources with surprising properties, in terms of directionality, polarization, and chirality.