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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster III
Q 55.17: Poster
Thursday, March 5, 2009, 16:30–19:00, VMP 8 Foyer
Towards quantum optical experiments with ions in the solid state — •Lutz Petersen, Michael Jobst, Stephan Götzinger, and Vahid Sandoghdar — Laboratory of Physical Chemistry and optETH, ETH Zurich, CH-8093 Zurich, Switzerland
A number of quantum optical phenomena, such as qubit population transfer or eit, can be investigated in the solid state using rare-earth ions. Although embedded in a solid-state matrix, these emitters can exhibit exquisitely narrow radiative linewidths on the order of kilohertz and inhomogeneous broadenings smaller than one gigahertz. Ultra-long dephasing times have been measured at temperatures below 10 K, merely limited by the spontaneous emission lifetime.
Our investigations focus on two transitions of praseodymium doped into an yttrium-orthosilicate crystal (yso): the well-studied 3H4−1D2 transition at 606 nm and the 3H4−3P0 transition at 488 nm. We use a micro-photoluminescence setup to investigate these ions at cryogenic temperatures. We are currently constructing a tunable laser source with sub-kilohertz linewidth for high-resolution spectroscopy. Future experiments involving such a narrow-band excitation source will be discussed.