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SUMMARY:Towards single-site-resolved detction of fermions in an optical la
 ttice - Proessor Stefan Kuhr (University of Strathclyde)
DTSTART:20140630T143000Z
DTEND:20140630T160000Z
UID:TALK53195@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Ultracold atoms in optical lattices have become a tool to simu
 late and test fundamental concepts of condensed matter physics\, in partic
 ular to simulate electrons in solid crystals. Recent experiments with sing
 le-site resolution of single atoms at individual lattice sites have result
 ed in the direct observation of quantum phase transitions\, such as the su
 perfluid to Mott insulator transition for bosonic particles [1]\, and\, e.
 g. single-site addressing [2] and the quantum dynamics of spin-impurities 
 [3].\nHowever\, an experimental proof of single-site-resolved detection of
  correlated phases of ultracold fermions in a lattice is still missing. I 
 will report on our current progress to realise single-site resolved\, in-s
 itu imaging and manipulation of strongly correlated fermionic 40K in an op
 tical lattice. Such a system would be an ideal environment to simulate the
  Fermi-Hubbard Hamiltonian\, allowing for the direct observation and chara
 cterisation of\, e.g.\, temperature\, spin-structure\, or entropy distribu
 tion of quantum phases such as fermionic Mott insulators\, Band insulators
  or Néel antiferromagnets.\n\n[1] J. F. Sherson\, C. Weitenberg\, M. Endr
 es\, M. Cheneau\, I. Bloch\, S. Kuhr\, Single-atom-resolved fluorescence i
 maging of an atomic Mott insulator\, Nature 467\, 68 (2010).\n[2] C. Weite
 nberg\, M. Endres\, J. F. Sherson\, M. Cheneau\, P. Schauß\, T. Fukuhara\
 , I.Bloch\, S. Kuhr\, Single-spin addressing in an atomic Mott insulator\,
  Nature 471\, 319 (2011).\n[3] T. Fukuhara\, A. Kantian\, M. Endres\, M. C
 heneau\, P. Schauß\, S. Hild\, D. Bellem\, U. Schollwöck\, T. Giamarchi\
 , C. Gross\, I. Bloch\, S. Kuhr\, Quantum dynamics of a single\, mobile sp
 in impurity\, Nature Physics 9\, 235 (2013)\n
LOCATION:Rutherford building\, Seminar Room B
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