Researchers protect the quantum state of a single electron spin
10 September 2010 by Press release FOMScientists from Delft University of Technology (G. de Lange, D. Ristè, en R. Hanson, Department Quantum Nanoscience/Quantum Transport) and Ames Lab in the USA (Z. H. Wang en V. V. Dobrovitski) have succeeded to fully protect the spin state of a single electron from its environment. Single solid state spins are promising building blocks for new quantum technologies like a quantum computer, but uncontrolled interactions of the spins with their environment have been a major hurdle.
Decoupled
By flipping the spin of a single electron with very short pulses the researchers have succeeded to mitigate these effects, effectively rendering the spin decoupled from its environment. Furthermore, they prove that the technique works for any possible spin state, a stringent requirement for use in a future quantum computer. Their results have been published online in the prestigious journal Science.
Publication
Universal Dynamical Decoupling of a Single Solid-State Spin from a Spin Bath,
Science [DOI: 10.1126/science.1192739]
published online 9 September 2010
URL: http://www.sciencemag.org/cgi/content/abstract/science.1192739v1
Read the full article at the homepage of Delft University of Technology.
