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SUMMARY:Imaging  and sub-wavelength measurements in scattering media - All
 ard Mosk (Universiteit Utrecht)
DTSTART:20230523T143000Z
DTEND:20230523T151500Z
UID:TALK198880@talks.cam.ac.uk
DESCRIPTION:Random scattering of light\, which takes place in paper\, pain
 t and biological tissue is an obstacle to imaging and focusing of light an
 d thus hampers many applications. At the same time scattering is a phenome
 non of basic physical interest and its relation to the information content
  of light is subtle and in many cases focusing. metrology and imaging are 
 still possible. Here we show shaped light fields that are relevant to imag
 ing and measurements in scattering environments. We present maximum inform
 ation states\, which are light states that carry a maximum amount of infor
 mation about a given observable\, enabling the most precise measurements t
 hat are possible given a coherent input beam. Conversely\, scattering inva
 riant modes are the least sensitive modes to the presence of a scattering 
 sample and they retain the same output profile whether propagated through 
 a scattering material or through air. We demonstrate these states experime
 ntally and show numerically their relevance to imaging inside scattering m
 edia.
LOCATION:Seminar Room 1\, Newton Institute
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