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SUMMARY:Solid State Quantum registers based on single spins associated wit
 h defects in diamond - Dr Fedor Jelezko University of Stuttgart
DTSTART:20071126T153000Z
DTEND:20071126T163000Z
UID:TALK8722@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Coherent control of single atoms and generation of non-classic
 al states has attracted widespread attention because of applications in qu
 antum information science. Solid state systems are oftne considered to be 
 promising and also difficult because of inhomogeneities and fast dephasing
 . Spin in solids\, for example associated with quantum dots or single dopa
 nt atoms offer promising figures of merit for both parameters. As a partic
 ular example\, the Nitrogen-Vacancy (NV) defect in ultrapure diamond shows
  long spin phase memory time (0.35 ms) evan at ambient conditions due to s
 pin-free and rigid lattice. In addition to its excellent spin properties\,
  spin selectivity of optical transitions of the NV defect allows initializ
 ation and readout of spin state with sensitivity routinely reaching single
  atom. The narrow spin resonance transitions of single defects make them a
  sensitive magnetometer at the nanoscale. I will discuss recent experiment
 s aiming to use single NV defect for reading out spin states of proximal 1
 3C and 14N nuclei. Magnetic coupling between electron spin of NV defects a
 nd neighboring electron or nuclear spin was used as a resource for generat
 ing entanglement between electron and nuclear spins.
LOCATION:HEP Seminar Room (980) Rutherford Building\, Cavendish Laboratory
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