Nondestructive optical measurements of a single electron spin in a quantum dot |
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Authors: | Berezovsky J Mikkelsen M H Gywat O Stoltz N G Coldren L A Awschalom D D |
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Institution: | Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA. |
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Abstract: | Kerr rotation measurements on a single electron spin confined in a charge-tunable semiconductor quantum dot demonstrate a means to directly probe the spin off-resonance, thus minimally disturbing the system. Energy-resolved magneto-optical spectra reveal information about the optically oriented spin polarization and the transverse spin lifetime of the electron as a function of the charging of the dot. These results represent progress toward the manipulation and coupling of single spins and photons for quantum information processing. |
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