Teaching

 

University of Amsterdam

Teaching


    Bose-Einstein condensation

    In this lecture, I explain how a Bose-Einstein condensate (BEC) of ultracold atoms is created in the lab. During the first three lectures basic atom-light interaction properties are derived. Lectures 4 to 5 explain laser cooling and trapping. Lecture 6 introduces evaporative cooling and Bose-Einstein condensation. In lecture 7 the experimental characterization of some BEC properties are explained. Finally I give an overview of some of our current research projects.


    This lecture was taught in autumn 2014 to 2016 in the physics master's programme of the University of Amsterdam. It was accompanied by a lecture on the theory of BEC by Gora Shlyapnikov.


    Full lecture as powerpoint presention: BEC_Lecture_UvA_FS_2016.pptx (190MB).

    Full lecture with notes as pdf: BEC_Lecture_UvA_FS_2016_with_Notes.pdf (41MB).

    Full lecture as pdf: BEC_Lecture_UvA_FS_2016_without_Notes.pdf (55MB).

    Mathematica demonstration and figures: BEC_Lecture_UvA_FS_2015.nb (2MB), Rapid_adiabatic_passage.nb (0.6MB).

    LaTeX source of equations: BEC_Lecture_UvA_FS_2014.zip (15kB).

    Detailed calculations for lecture 3 & 4 (pdf)


    Lecture 1
        Ultracold quantum gases:
            What?   Why?   How?
        Labtour
        
    Lecture 2
        Atom-laser interaction
        Bloch sphere
          
    Lecture 3
        Dressed state picture
        Optical Bloch equations
        Detecting an ultracold gas
        
    Lecture 4
        Light forces
        Molasses cooling    
        Sisyphus cooling
        
    Lecture 5
        Atomic beam oven
        Zeeman slower
        Magneto-optical trap
        Technology for laser cooling
        
    Lecture 6
        Optical dipole trap
        Magnetic trap
        Trap technology
        Evaporative cooling
        Characterizing a BEC
        
    Lecture 7
        Characterizing a BEC
         Our research:
            -  Laser cooling to BEC
            -  Towards RbSr molecules

        


    Quantum simulation

    In this lecture, I explain how ultracold quantum gases can be used to study quantum physics in the spirit of quantum simulation. It was taught in spring 2015 in the physics master's programme of the University of Amsterdam. It was accompanied by a lecture on the theory of Fermi quantum gases by Gora Shlyapnikov.


    To obtain a download link to the >600 slides powerpoint presentation used during this lecture simply write a short email to schreck at strontiumBEC.com.


    Introduction: Quantum simulation
        
    Part 1: Simulation of crystalline solids
        Lattices: dispersion relation, Brillouin zone, Bloch states, Wannier states, Bloch oscillations, experimental realization
        Derivation of Hubbard Hamiltonian, discussion of approximations
        Superfluid to Mott-Insulator phase transition: phase diagram obtained by Gutzwiller Ansatz
        Experimental observation: momentum distributions, measurement of gap, precise comparison with numerical solution
        Observation of Mott shells by absorption imaging
        Quantum gas microscopy: observation of superfluid to Mott-insulator phase transition
        
    Part 2: Magnetism
        Origin of magnetism in solid state, types of exchange interaction
        Observation of super-exchange interaction
        Quantum dynamics of spin impurity observed with quantum gas microscope
        Quantum simulation of antiferromagnetic spin chains
        Changing the tunnel matrix element by shaking
        Quantum simulation of frustrated classical magnetism in triangular optical lattice
        
    Part 3: Artificial gauge fields
        Artificial gauge fields by rotation, detection of vortices
        The quantum Hall effect
        Artificial gauge fields and Berry phase
        BEC in a uniform light-induced vector potential
        Synthetic magnetic fields for ultracold neutral atoms
        Optical lattice with magnetic flux
        The Harper-Hofstadter Hamiltonian and the Hofstadter butterfly
        Realizing the Harper-Hofstadter Hamiltonian
        Spin-orbit coupling
        
    Part 4: Fermi gases
        Creation and detection
        Interaction tuning: Feshbach resonances
        BEC-BCS crossover: what is it? Measuring the pairing gap
        The unitary Fermi gas: equation of state, second sound
        Polarons


    Atom lasers

    FOMO summer school 2016 lecture on atom lasers.

    Powerpoint presention: 20160908_Arcachon_FOMO_School_atom_lasers_FS.pptx (59MB).

    PDF: 20160908_Arcachon_FOMO_School_atom_lasers_FS.pdf (7MB).



    Introduction to quantum mechanics, part 3

    This lecture is aligned with Griffiths' chapters 5 to 7 and taught in the 2nd year of the bachelor during 10 hours. To obtain a download link to the 330 slides powerpoint presentation used during this lecture simply write a short email to schreck at strontiumBEC.com.


Last modified: 22.03.2017, FS