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).
LaTeX source of equations: BEC_Lecture_UvA_FS_2014.zip (15kB).
Detailed calculations for lecture 3 & 4 (pdf)
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
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
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