Optical manipulation of a single Mn spin in a CdTe quantum dot |
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| Institution: | 1. Institute of Experimental Physics, University of Warsaw, Warsaw, Poland;2. Institute of Physics, Polish Academy of Sciences, Warsaw, Poland;1. G.G. Devyatykh Institute of Chemistry of High-Purity Substances RAS, Nizhny Novgorod, Russia;2. D. Mendeleev University of Chemical Technology of Russia, Moscow, Russia;3. General Physics Institute of RAS, Moscow, Russia;4. Institute for Physics of Microstructures RAS, Nizhny Novgorod, Russia;1. College of Physics and Energy & College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China;2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China;3. Department of Electrical and Electronic Engineering, South University of Science and Technology of China, Shenzhen 518055, China;4. Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China;1. Department of Electrical and Computer Engineering, Drexel University, Philadelphia, PA 19104, United States;2. Institute of Optics, University of Rochester, Rochester, NY 14627, United States;3. Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627, United States;1. Laboratory of Thin films and Interface, Faculty of Exact Sciences, Department of Physics, Brothers Mentouri Constantine 1 University, Ain El Bye, 25000, Algeria;2. Departement of Physics, Faculty of Sciences, Badji Mokhtar Annaba university, BP 12 Annaba, 23000, Algeria;3. Research Center in Semiconductor technologies for Energetic (CRTSE), Division of Semiconductors Crystalline Growth and Metallurgical Processes (CCPM/CMMO), 02 Bd Frantz Fanon, BP. 140, Algiers, Algeria;4. Djillali Liabes University, Sidi Bel Abbes, 22000, Algeria;5. Chadli Ben Djedid University, El Tarf, 36000, Algeria |
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| Abstract: | In this paper we demonstrate optical writing of information on the spin state of a single Mn ion embedded in a CdTe/ZnTe quantum dot. As a tool for Mn spin orientation we use a spin-conserving transfer of excitation between two coupled quantum dots, one of them containing the Mn ion. Excitons created by circularly polarized light act on the Mn ion via the sp–d exchange interaction and orient its spin. The magnetic field of 1 T strongly enhances the orientation efficiency due to suppression of fast Mn spin relaxation mechanisms. Dynamics of the Mn spin under polarized excitation was measured in a time-resolved experiment, in which the intensity and polarization of excitation were modulated. Observed dynamics of the Mn spin can be described with a simple rate equation model. |
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