Spin-selective AC Stark shifts in a charged quantum dot
| Autor: | Edward B. Flagg, C. J. Flood, T. A. Wilkinson, C. E. Maurer, Allan S. Bracker, J. M. Cramlet, Michael K. Yakes, Daniel Gammon, D. J. Cottrill |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics and Astronomy (miscellaneous)
FOS: Physical sciences 02 engineering and technology Nuclear Overhauser effect 01 natural sciences law.invention symbols.namesake law 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum system 010302 applied physics Physics Quantum Physics Spins Condensed Matter - Mesoscale and Nanoscale Physics 021001 nanoscience & nanotechnology Polarization (waves) Laser Stark effect Quantum dot Coherent control symbols Atomic physics 0210 nano-technology Quantum Physics (quant-ph) |
| Popis: | A strong, far-detuned laser can shift the energy levels of an optically active quantum system via the AC Stark effect. We demonstrate that the polarization of the laser results in a spin-selective modification to the energy structure of a charged quantum dot, shifting one spin manifold but not the other. An additional shift occurs due to the Overhauser field of the nuclear spins, which are pumped into a partially polarized state. This mechanism offers a potentially rapid, reversible, and coherent control of the energy structure and polarization selection rules of a charged quantum dot. 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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