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UID:0-849@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20221213T110000
DTEND;TZID=Europe/Paris:20221213T120000
DTSTAMP:20221202T161947Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-martin-robert-de-saint-vincent-lpl/
SUMMARY:Séminaire du LPTMS : Martin Robert-de-Saint-Vincent (LPL) - Salle 
 des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 13 Déc 22
  11:00
DESCRIPTION:Manipulating the spins of degenerate SU(10)-symmetric fermi gas
 es\nMartin Robert-de-Saint-Vincent (Laboratoire de Physique des Lasers)\n\
 n\nHybrid: onsite seminar + zoom.\n\nRegister in advance for this meeting:
 \nhttps://cnrs.zoom.us/meeting/register/tJMscu-hrjssHtcOKfIhHgsjCUDte0Y2jo
 d- \nAfter registering\, you will receive a confirmation email containing 
 information about joining the meeting.\n\n\nUltracold alkaline-earth atoms
  offer the possibility to study the effect of a large spin degree of freed
 om in interacting fermionic ensembles. I will present the recent developme
 nts of our experiment\, on which we produce degenerate Fermi gases of stro
 ntium 87\, held in optical lattices to realize the Fermi-Hubbard model gen
 eralized to large-spin atoms (F = 9/2).\n\nIn this seminar\, I will focus 
 on our capabilities for measurement and control of the spins\, and connect
  this to our intended approach for the study of the antiferromagnetic Heis
 enberg model of magnetism. For our atomic species\, the spins are of nucle
 ar nature\, which is both a strength and a complication as standard spin m
 easurement or manipulation schemes based on magnetic gradients are ineffec
 tive. I will show nevertheless that a narrow line with large hyperfine str
 ucture offers us very powerful tools\, associated with the engineering of 
 effective spin-orbit coupling\, that we will use on several central aspect
 s of our studies. First\, we applied adiabatically a three-level coupling 
 involving a dark atomic state\, reminiscent of EIT or STIRAP\, to transfer
  momentum in a spin-selective manner [1]. This\, we now use for spin measu
 rements\, and could provide information through spin-momentum noise correl
 ations. Second\, we have demonstrated controlled coherent adiabatic operat
 ions in the 10-component spin-manifold\, on degenerate gases prepared dete
 rministically in a single spin state. I will connect this to our present e
 ffort at using microstructured optical fields to adiabatically reach low-e
 nergy states of the Heisenberg Hamiltonian\, by the controlled breaking of
  its symmetries [2].\n\n[1] P. Bataille et. al.\, Phys. Rev. A 102\, 01331
 7 (2020).\n[2] Comparin et.al.\, Phys. Rev. Lett. 129\, 113201 (2022)\n
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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TZID:Europe/Paris
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DTSTART:20221030T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
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