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SUMMARY:Solid state quantum registers based on single spins assoicated wit
 h defects in diamond - Dr Fedor Jelezko (3. Physikalisches Institut)
DTSTART:20080121T153000Z
DTEND:20080121T163000Z
UID:TALK9961@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Solid state quantum registers based on single spins associated
  with defects in diamond\nFedor Jelezko\n3. Physikalisches Institut\, Univ
 ersität Stuttgart\, 70550 Stuttgart\, Germany\n\nCoherent control of sing
 le atoms and generation of non-classical states has attracted widespread a
 ttention because of applications in quantum information science. Solid sta
 te systems are often considered to be promising and also difficult because
  of inhomogeneities and fast dephasing. Spins in solids\, for example asso
 ciated with quantum dots or single dopant atoms offer promising figures of
  merit for both parameters. As a particular example\, the Nitrogen-Vacancy
  (NV) defect in ultrapure diamond shows long spin phase memory time (0.35 
 ms) [1] even at ambient conditions due to spin-free and rigid lattice. In 
 addition to its excellent spin properties\, spin selectivity of optical tr
 ansitions of the NV defect allows initialization and readout of spin state
  with sensitivity routinely reaching single atom [2]. The narrow spin reso
 nance transitions of single defects make them a sensitive magnetometer at 
 the nanoscale. I will discuss recent experiments aiming to use single NV d
 efect for reading out spin states of proximal 13C and 14N nuclei [3]. Magn
 etic coupling between electron spin of NV defects and neighboring electron
  or nuclear spin was used as a resource for generating entanglement betwee
 n electron and nuclear spins [4]. \n\n[1]	T. Gaebel et al.\, Nature Physic
 s 2\, 408 (2006).\n[2]	F. Jelezko et al.\, Physical Review Letters 92\, 07
 6401 (2004).\n[3]	L. Childress et al.\, Science 314\, 281 (2006).\n[4]	M. 
 V. G. Dutt et al.\, Science 316\, 1312 (2007).\n\n\n
LOCATION:HEP Seminar Room (980) Rutherford Building\, Cavendish Laboratory
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