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SUMMARY:Entanglement test to witness quantum nature of gravity in a lab
DTSTART:20260313T150000Z
DTEND:20260313T160000Z
DTSTAMP:20260506T200400Z
UID:indico-event-50805@agenda.infn.it
DESCRIPTION:Speakers: Mazumdar Anupam (University of Groningen)\n\nQuantum
  field theories and classical general relativity accurately model all obse
 rvations to date. Although quantum gravity has been theoretically much stu
 died\, it still lacks empirical evidence. This makes “is spacetime/gravi
 ty quantum?” one of our most important open questions. I have pioneered 
 an ambitious idea with my collaborators\, “spin entanglement witness for
  quantum gravity\,” to test the quantum nature of gravity in a lab. It e
 xploits ideas from quantum information and combines a quantum spin with co
 oling and trapping technologies. It is based on entangling two neutral qua
 ntum masses solely by their gravitational interaction while all other inte
 ractions are mitigated\, e.g. electromagnetic (EM) interactions between th
 e masses. It proves the quantum nature of gravity\, as classical gravity c
 annot mediate quantum correlations (entanglement). The potentially realisa
 ble protocol requires meeting a rich set of challenges: mitigating the EM 
 interactions and background\, creating spatial quantum superpositions for 
 massive objects\, and measuring spin correlations to witness the entanglem
 ent. We must also protect quantum superpositions from heating\, recoil\, b
 lackbody radiation\, acceleration\, seismic and gravity-gradient noise.\n\
 nhttps://agenda.infn.it/event/50805/
LOCATION:Aula Conversi (Dip. di Fisica - Edificio G. Marconi)
URL:https://agenda.infn.it/event/50805/
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