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X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:6aa812dbecac8
DTSTART:20250117T140000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20250117T150000Z
LOCATION:Seminar Room
SUMMARY:ICFO | BORIVOJE DAKIC
CLASS:PUBLIC
DESCRIPTION:Quantum systems will only ever be as useful as the information 
 we can extract from them. In this context\, benchmarking and estimation in
  large entangled systems represent one of the main challenges in employing
  such systems for reliable quantum information processing. Though the most
  complete technique is undoubtedly full tomography\, the inherent exponent
 ial increase of experimental and post-processing resources with system siz
 e makes this approach infeasible even at moderate scales. For this reason\
 , there is currently an urgent need to develop novel methods that surpass 
 these limitations. In this talk\, I will review such novel techniques. Spe
 cifically\, a probabilistic framework requiring\, at best\, only a single 
 copy for entanglement detection is examined\, together with the protocol f
 or resource-efficient and device-independent quantum state verification\, 
 as well as the concept of selective quantum state tomography\, which enabl
 es the estimation of arbitrary elements of an unknown state with a number 
 of copies that is low and independent of the system's size. Additionally\,
  I will present recent work [1] on optimized post-processing methods that 
 demonstrate exponential advantages in sampling complexity over conventiona
 l approaches. These hyper-efficient techniques [2] define a dimensional de
 marcation for partial tomography and open a path for novel applications.
DTSTAMP:20260914T152931Z
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