Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 51: Quantum information: Photons and nonclassical light III
Q 51.6: Talk
Thursday, March 20, 2014, 17:45–18:00, UDL HS3038
Mapping Spin Coherence of a Single Rare-Earth Ion in a Crystal onto a Single Photon Polarization State — •Kangwei Xia1, Roman Kolesov1, Rolf Reuter1, Mohammad Jamali1, Rainer Stöhr1, Tugrul Inal1, Petr Siyushev1, Nadezhda Kukharchyk2, Andreas Wieck2, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart, Stuttgart, Deutschland — 2Angewandte Festkörperphysik, Ruhr-Universität Bochum, Bochum, Deutschland
Here, we report on optical detection of a single photostable Ce3+ ion in an yttrium aluminum garnet (YAG) crystal and on its magneto-optical properties at room temperature. The spin quantum state of the emitting level of a single cerium ion in YAG can be initialized by a circularly polarized laser pulse. Coherent precession of the electron spin is read out by observing temporal behavior of circularly polarized fluorescence of the ion. This implies direct mapping of the spin quantum state of Ce3+ ion onto the polarization state of the emitted photon and represents the quantum interface between a single spin and a single photon. Furthermore the nanoscalar engineering of RE ions in crystalline hosts has been demonstrated. Using ion implantation, cerium ions can be implanted in a YAG crystal with nanoscalar precision.