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SUMMARY:Toward quantum dot based quantum networks
DTSTART:20150605T141500
DTSTAMP:20260406T182746Z
UID:d7f3589abcc625a842756b94f36fd9cc64dfab9c14be954f3a0c0c93
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Pascale Senellart\, CNRS\nSemiconductor quantum dots (QDs)
  are very promising artificial atoms for quantum information processing\;
  they can generate flying quantum bits in the form of single photons or po
 larization entangled photon pairs. They show single photon sensitivity\, 
 which can be used to implement quantum logic gates\; and\, last but not l
 east\, the spin of a carrier trapped in a QD can be used as a quantum mem
 ory. The scalability of a QD based quantum network requires having efficie
 nt interfaces\nbetween stationary and flying quantum bits. In the last few
  years\, our group has made significant progresses in this direction usin
 g cavity quantum electrodynamics.\nBy deterministically positioning a sing
 le QD in a microcavity\, we control its spontaneous emission at will [1].
  With such a tool\, we fabricate ultrabright sources of single photons a
 nd of entangled photon pairs\, with brightnesses as high as 80% [2]. By c
 ontrolling the charge environment of the QD in a gated structure [3]\, we
  demonstrate near unity indistinguishability of the emitted photons.\nSym
 metrically\, we have made important progresses in the development of an e
 fficient interface between a flying quantum bit and a stationary one. We 
 show that a single spin in a cavity can macroscopically rotate the polari
 zation of photons [4] and reach the regime where coherent control of a qu
 antum bit can be done with only few photon pulses.\nBio: Directrice de Re
 cherche CNRS\nLaboratoire de Photonique et de Nanostructure\nNovember 2012
  – Present (2 years 8 months)\nLPN carries out its research activities w
 ithin the general context of nanosciences\, at the cross-roads of quantum 
 optics and electronics\, of physics\, chemistry and biology\, of materials
  science and device physics. LPN develops the new technologies and the con
 cepts that will initiate innovation both in basic and in applied science.
LOCATION:PH L1 503 (The aquarium ) 
STATUS:CONFIRMED
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