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SUMMARY:Quantum gas microscopy of magnetic phases with and without doping 
 - Dr Timon Hilker\, MPQ Munich 
DTSTART:20221006T093000Z
DTEND:20221006T103000Z
UID:TALK184016@talks.cam.ac.uk
CONTACT:Dr Ulrich Schneider
DESCRIPTION:Quantum simulation in optical lattices can address complex pha
 ses of strongly correlated electrons. With our quantum gas microscope\, we
  measure snapshots of the quantum many-body wavefunction of Li-6 atoms by 
 fully resolving the position and spin of each particle. I will present the
  application of this method to two quantum phases:\nThe Haldane spin-1 pha
 se is the prototype of a symmetry-protected topological phase\, whose spin
  order is hidden in conventional two-point correlation functions. On our i
 mages\, we can evaluate the characteristic string-correlator of this state
  and directly see the associated edge states of the system.\nIn an antifer
 romagnetic 2d background\, charge dopants get dressed by a surrounding clo
 ud of ferromagnetic correlations and magnetically bound pairs of these pol
 arons could be a building block of the intricate physics found in the cupr
 ates. We directly image the spatial structure of the spin environment arou
 nd individual holes and recently observed bound pairs of holes when constr
 aining the motion of holes to 1D while keeping spin order two-dimensional.
 \n
LOCATION:Ryle Seminar Room (930) 
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