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VERSION:2.0
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UID:6ab5f583074ea
DTSTART:20250424T110000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20250424T120000Z
LOCATION:Seminar Room
SUMMARY:ICFO | QUENTIN REDON 
CLASS:PUBLIC
DESCRIPTION:Lattice gauge theories (LGTs) describe a broad range of phenome
 na in condensed matter and particle physics. A prominent example is confin
 ement\, responsible for bounding quarks inside hadrons such as protons or 
 neutrons. When quark-antiquark pairs are separated\, the energy stored in 
 the string of gluon fields connecting them grows linearly with their dista
 nce\, until there is enough energy to create new pairs from the vacuum and
  break the string. While such phenomena are ubiquitous in LGTs\, simulatin
 g the resulting dynamics is a challenging task. Here\, we report the obser
 vation of string breaking in synthetic quantum matter using a programmable
  quantum simulator based on neutral atom arrays. We show that a (2+1)D LGT
  with dynamical matter can be efficiently implemented when the atoms are p
 laced on a Kagome geometry\, with a local U(1) symmetry emerging from the 
 Rydberg blockade\, while long-range Rydberg interactions naturally give ri
 se to a linear confining potential for a pair of charges\, allowing us to 
 tune both their masses as well as the string tension. We experimentally ma
 p out the corresponding phase diagram by adiabatically preparing the groun
 d state of the atom array in the presence of defects\, and observe substru
 cture of the confined phase\, distinguishing regions dominated by fluctuat
 ing strings or by broken string configurations. Finally\, by harnessing lo
 cal control over the atomic detuning\, we quench string states and observe
  string breaking dynamics exhibiting a many-body resonance phenomenon. Our
  work paves a way to explore phenomena in high-energy physics using progra
 mmable quantum simulators.
DTSTAMP:20260925T041603Z
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