# PROGRESS IN OPTICALLY-DETECTED SPIN-RESONANCE ON HELIUM DROPLETS

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 Title: PROGRESS IN OPTICALLY-DETECTED SPIN-RESONANCE ON HELIUM DROPLETS Creators: Koch, Markus; Aubock, Gerald; Nagl, Johann; Callegari, Carlo; Ernst, Wolfgang E. Issue Date: 2008 Publisher: Ohio State University Abstract: We have recently demonstrated the possibility of optically detecting the spin state of alkali metal atoms and molecules formed on helium nanodroplets and immersed in a magnetic field.} \textbf{98,} 075301 (2007).}} \textbf{111,} 7404 (2007).} This has already allowed us to show that the electronic spins of atoms do not relax within the timescale of the experiment ($\sim 10^{-3}$~s) and those of molecules do. With this prerequisites fulfilled, we now set to demonstrate that electron spins on a He droplet can be manipulated. We have already achieved optical pumping, which we intend to present at the meeting, and we strive to soon reach optically-detected electron-spin resonance. Description: J. Nagl, G. Aubock, C. Callegari and W. E. Ernst, Phys. Rev. Lett.G. Aubock, J. Nagl, C. Callegari and W. E. Ernst, J. Phys. Chem. A Author Institution: Institute of Experimental Physics, TU Graz, Petersgasse 16; 8010 Graz, Austria/EU URI: http://hdl.handle.net/1811/33337 Other Identifiers: 2008-WH-09