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DTSTAMP:20260424T143325Z
UID:1713862800@ist.ac.at
DTSTART:20240423T110000
DTEND:20240423T120000
DESCRIPTION:Speaker: Philipp Treutlein\nhosted by Onur Hosten\nAbstract: In
  1935\, Einstein\, Podolsky\, and Rosen (EPR) conceived a gedanken experim
 ent which became a cornerstone of quantum technology and still challenges 
 our understanding of reality and locality today. While the experiment has 
 been realized with small quantum systems\, a demonstration of the EPR para
 dox with massive many-particle systems remains an important challenge\, as
  such systems are particularly closely tied to the concept of local realis
 m in our everyday experience and may serve as probes for new physics at th
 e quantum-to-classical transition. I will report on an EPR experiment with
  two spatially separated Bose-Einstein condensates\, each containing about
  700 rubidium atoms [1]. Entanglement between the condensates results in s
 trong correlations of their collective spins\, allowing us to demonstrate 
 the EPR paradox between them. Our results represent the first observation 
 of the EPR paradox with spatially separated\, massive many-particle system
 s. They show that the conflict between quantum mechanics and local realism
  does not disappear as the system size increases to more than a thousand m
 assive particles. Furthermore\, EPR entanglement in conjunction with indiv
 idual manipulation of the condensates on the quantum level allows us to im
 plement novel protocols for multi-parameter quantum metrology. [1] P. Col
 ciaghi\, Y. Li\, P. Treutlein\, and T. Zibold\, Phys. Rev. X 13\, 021031 (
 2023)
LOCATION:Heinzel Seminar Room / Ground Floor / Office Building West\, ISTA
ORGANIZER:ssandra.widdmann@ista.ac.at
SUMMARY:Philipp Treutlein: Einstein-Podolsky-Rosen experiment with two Bose
 -Einstein condensates
URL:https://talks-calendar.ista.ac.at/events/4714
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