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@ARTICLE{Veldman:892884,
      author       = {Veldman, Lukas M. and Farinacci, Laëtitia and Rejali, Rasa
                      and Broekhoven, Rik and Gobeil, Jérémie and Coffey, David
                      and Ternes, Markus and Otte, Alexander F.},
      title        = {{F}ree coherent evolution of a coupled atomic spin system
                      initialized by electron scattering},
      journal      = {Science / Science now},
      volume       = {372},
      number       = {6545},
      issn         = {1095-9203},
      address      = {Washington, DC},
      publisher    = {Assoc.},
      reportid     = {FZJ-2021-02418},
      pages        = {964 - 968},
      year         = {2021},
      abstract     = {Full insight into the dynamics of a coupled quantum system
                      depends on the ability to follow the effect ofa local
                      excitation in real-time. Here, we trace the free coherent
                      evolution of a pair of coupled atomicspins by means of
                      scanning tunneling microscopy. Rather than using microwave
                      pulses, we use a direct-current pump-probe scheme to detect
                      the local magnetization after a current-induced
                      excitationperformed on one of the spins. By making use of
                      magnetic interaction with the probe tip, we are able totune
                      the relative precession of the spins. We show that only if
                      their Larmor frequencies match, the twospins can entangle,
                      causing angular momentum to be swapped back and forth. These
                      results provideinsight into the locality of electron spin
                      scattering and set the stage for controlled migration of
                      aquantum state through an extended spin lattice.},
      cin          = {PGI-3},
      ddc          = {320},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {521 - Quantum Materials (POF4-521) / 522 - Quantum
                      Computing (POF4-522)},
      pid          = {G:(DE-HGF)POF4-521 / G:(DE-HGF)POF4-522},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34045351},
      UT           = {WOS:000656432400046},
      doi          = {10.1126/science.abg8223},
      url          = {https://juser.fz-juelich.de/record/892884},
}