Advanced quantum control of single diamond defect centers and their environment

  • Date: Dec 7, 2010
  • Time: 12:30 PM - 12:30 PM (Local Time Germany)
  • Speaker: Prof. Dr. Ronald Hanson, Delft University of Technology
  • Room: Herbert Walther Lecture Hall
  • Host: MPQ
Quantum control of light and matter is an outstanding challenge in modern science. Diamond-based materials have recently emerged as a unique platform for quantum science and engineering [1]. Spins of single Nitrogen-Vacancy (N-V) color centers in diamond can be imaged, initialized and read out optically, and show quantum coherence even at room temperature. Full control over the spin state and the optical transition may enable exciting applications such as long-distance quantum teleportation and quantum information processing. Moreover, the tunable interactions of the NV center with its environment also make this system an excellent test bed for fundamental studies on decoherence, spin-bath interactions, and light-matter interactions in engineered nanostructures.In this talk I will present our latest results on schemes to protect single-spin coherence from the surrounding spin bath [2] as well as quantum control of the spin bath itself. Also, I will discuss our progress towards entanglement of distant NV center spins via photon interference [3].[1] Ronald Hanson and David D. Awschalom, Nature 453, 1043 (2008).[2] G. de Lange et al., Science 330, 60 (2010).[3] L. Robledo et al., Phys. Rev. Lett. 105, 177403 (2010); T. van der Sar et al., arXiv:1008.4097 (2010).
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