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DTSTART:20240310T070000
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DTSTART:20231105T060000
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DTSTART;TZID=America/Toronto:20240417T120000
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URL:https://uwaterloo.ca/institute-for-quantum-computing/events/iqc-student
 -seminar-featuring-benjamin-maclellan
LOCATION:QNC - Quantum Nano Centre 200 University Avenue West Room QNC 1201
  Waterloo ON N2L 3G1 Canada
SUMMARY:IQC Student Seminar Featuring Benjamin MacLellan
CLASS:PUBLIC
DESCRIPTION:VARIATIONAL METHODS FOR QUANTUM SENSING\n\nQuantum-Nano Centre\
 , 200 University Ave West\, Room QNC 1201 Waterloo\,\nON CA N2L 3G1\n\nThe
  precise estimation of unknown physical quantities is foundational\nacross
  science and technology. Excitingly\, by harnessing\ncarefully-prepared qu
 antum correlations\, we can design and implement\nsensing protocols that s
 urpass the intrinsic precision limits imposed\non classical approaches. Ap
 plications of quantum sensing are myriad\,\nincluding gravitational wave d
 etection\, imaging and microscopy\,\ngeoscience\, and atomic clocks\, amon
 g others.\n\nHowever\, current and near-term quantum devices have limitati
 ons that\nmake it challenging to capture this quantum advantage for sensin
 g\ntechnologies\, including noise processes\, hardware constraints\, and\n
 finite sampling rates. Further\, these non-idealities can propagate and\na
 ccumulate through a sensing protocol\, degrading the overall\nperformance 
 and requiring one to study protocols in their entirety.\n\nIn recent work 
 [1]\, we develop an end-to-end variational framework for\nquantum sensing 
 protocols. Using parameterized quantum circuits and\nneural networks as ad
 aptive ansätze of the sensing dynamics and\nclassical estimation\, respec
 tively\, we study and design variational\nsensing protocols under realisti
 c and hardware-relevant constraints.\nThis seminar will review the fundame
 ntals of quantum metrology\, cover\ncommon sensing applications and protoc
 ols\, introduce and benchmark our\nend-to-end variational approach\, and c
 onclude with perspectives on\nfuture research.\n\n[1] https://arxiv.org/a
 bs/2403.02394
DTSTAMP:20260419T090718Z
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