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SUMMARY:Macroscopic Quantum Systems as Probes of Casimir Physics and Gravi
 ton Signatures
DTSTART:20260508T110000Z
DTEND:20260508T130000Z
DTSTAMP:20260508T044000Z
UID:indico-event-9685@indico.fysik.su.se
DESCRIPTION:Speakers: Germain Tobar (Stockholm University)\n\nAbstract:“
 Over the past few decades\, advances in light–matter control have enable
 d quantumphenomena to be prepared and measured at increasingly large mass 
 scales. In this thesis\, weshow that single gravitons can\, in principle\,
  be detected by developing quantum-opticalmodels for the interaction of qu
 antized gravitational radiation with matter. We demonstratethat resonant-m
 ass and interferometric gravitational-wave detectors\, when read-out in th
 eparticle-number basis\, operate as the gravitational analogue of a photoe
 lectric detector:discrete energy absorption events and resonance condition
 s enable single-quantumexchange to be identified\, with detector efficienc
 y defined by the ratio of the absorbed toincident gravitons. While gravito
 n emission from microscopic systems is negligibly slow(supporting Dyson’
 s pessimistic conjecture)\, macroscopic resonators benefit from enhancedra
 tes of energy exchange. Finally\, we revisit the dynamical Casimir effect\
 , arguing that allexisting demonstrations to date admit an interpretation 
 as parametric mode coupling ofstatic cavity modes (the same physics that u
 nderlies many standard quantum opticsexperiments)\, and we propose a near-
 term route to witnessing Moore’s original effect usingatomic arrays as q
 uantum mirrors that can map the effect onto a measurable frequency shiftof
  a Rydberg control atom.’’\n\nhttps://indico.fysik.su.se/event/9685/
LOCATION:AlbaNova A5:1041 - CoPS grupprum (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9685/
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