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Interfacing Spins and Photons in SiC and Rare Earth Systems

Jörg Wrachtrup
Friday, December 13, 2013 - 3:30pm
Location: 
Spilker 232

Interfacing Spins and Photons in SiC and Rare Earth Systems

Jörg Wrachtrup
Universität Stuttgart
wrachtrup@physik.uni-stuttgart.de

Quantum technology relies on efficient interfaces between different quantum systems. Spins and photons are particularly interesting to look at as photons are efficient for quantum state transfer, and spins are reliable memories.

Rare earth atoms like Ce and Pr are prototype spin systems, which have proven to be reliable memories for classical and non-classical photon states. I will describe a set of experiments on single Rare Earth spins, demonstrating their efficient initialization and coherent control [1,2]. SiC is another system, which promises versatile spin-photon interaction. I will address our recent attempts to measure single defect spins in SiC and analyze their coherence properties.

1.     Optical Detection of a Single Rare-Earth Ion In a Crystal
R. Kolesov et al.
Nature Commun. 3 1029 (2012)

2.     Mapping Spin Coherence of a Single Rare-Earth Ion In a Crystal Onto a Single Photon Polarization State
R. Kolesov et al.
Phys. Rev. Lett. 111 120502 (2013)

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