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CATEGORIES:AMOP list
SUMMARY:Building a dark matter wind chime - Jake Taylor\, 
 Joint Quantum Institute\, University of Maryland 
DTSTART;TZID=Europe/London:20191108T140000
DTEND;TZID=Europe/London:20191108T150000
UID:TALK134359AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/134359
DESCRIPTION:Galactic and cosmological observations strong sugg
 est the existence of a substantial amount of non-l
 uminous matter. This dark matter could take many f
 orms\; the only strong constraints know at present
  are its approximate density (about one hydrogen a
 tom mass per cubic centimeter in our galaxy) and t
 hat it gravitates. Here we consider the observable
  consequences of particulate dark matter with no s
 tandard model coupling\, i.e.\, particles that onl
 y gravitate. We find that modern optomechanical de
 tectors\, now entering the ultra-coherent quantum 
 regime in a variety of experiments worldwide\, may
  be able to directly observe the effects of indivi
 dual dark matter parts as they stream past the Ear
 th. However\, to achieve this in the laboratory se
 tting requires making substantial strides in the m
 easurement of massive objects\, going well beyond 
 the so-called ‘standard quantum limit’. I discuss 
 how leveraging tools from quantum information scie
 nce\, such as quantum non-demolition measurement a
 nd squeezinng\, can achieve unprecendented sensiti
 vity of massive objects to small impulses. I will 
 discuss the scientific and technological path nece
 ssary to yield direct gravitational observation of
  dark matter in the range of the Planck mass to gr
 am-scale particles.
LOCATION: Small Lecture Theatre\, Cavendish Laboratory\, J.
 J. Thomson Avenue
CONTACT:Lynn Campbell
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