title: Coherent Precession of an Individual 5/2 Spin.
abstract: We present direct observation of a coherent spin precession of an individual Mn^{2+} ion, having both electronic and nuclear spins equal to 5/2, embedded in a CdTe quantum dot and placed in a magnetic field. The spin state evolution is probed in a time-resolved pump-probe measurement of absorption of the single dot. The experiment reveals subtle details of the large-spin coherent dynamics, such as nonsinusoidal evolution of states occupation, and beatings caused by the strain-induced differences in energy levels separation. Sensitivity of the large-spin impurity on the crystal strain opens the possibility of using it as a local strain probe.
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Goryca
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Koperski
authors.affiliation: Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-688 Warszawa, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Wojnar
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Smoleński
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Kazimierczuk
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Golnik
authors.affiliation: Institute of Experimental Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Kossacki