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VERSION:2.0
PRODID:Icfo
X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:6ab539112178b
DTSTART:20250127T140000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20250127T150000Z
LOCATION:Seminar Room
SUMMARY:ICFO | JUSTUS BRÜGGENJÜRGEN
CLASS:PUBLIC
DESCRIPTION:Coherence properties are central to quantum systems and are at 
 the heart of phenomena such as superconductivity. Here we study coherence 
 properties of an ultra-cold Bose gas in a two-dimensional optical lattice 
 across the thermal phase transition. To infer the phase coherence and phas
 e fluctuation profile\, we use direct matter-wave imaging of higher Talbot
  revivals as well as a new phase microscope based on a site-resolved mappi
 ng of phase fluctuations to density fluctuations during matter-wave imagin
 g. We use these tools to probe the phase coherence across the Berezinskii-
 Kosterlitz-Thouless phase transition in the lattice and extract the critic
 al exponent from single-site resolved phase measurements. These tools will
  be vital for studying coherence properties in strongly correlated quantum
  systems in a spatially resolved manner\, e.g.\, for detecting phase domai
 ns or resolving superfluid domains in inhomogeneous systems.&nbsp\;
DTSTAMP:20260924T145201Z
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