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RISS 인기검색어
- 검색키워드
- 저자 : Vanner, M. R. (검색결과 2 건)
- 무료
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Milburn, T. J.,Kim, M. S.,Vanner, M. R. American Physical Society 2016 Physical Review A Vol.93 No.5
<P>Nonclassical-state generation is an important component throughout experimental quantum science for quantum information applications and probing the fundamentals of physics. Here, we investigate permutations of quantum nondemolition quadrature measurements and single quanta addition or subtraction to prepare quantum superposition states in bosonic systems. The performance of each permutation is quantified and compared using several different nonclassicality criteria including Wigner negativity, nonclassical depth, and optimal fidelity with a coherent-state superposition. We also compare the performance of our protocol using squeezing instead of a quadrature measurement and find that the purification provided by the quadrature measurement can significantly increase the nonclassicality generated. Our approach is ideally suited for implementation in light-matter systems such as quantum optomechanics and atomic spin ensembles, and offers considerable robustness to initial thermal occupation.</P>
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몇 가지 잡초종이 라디아타소나무 유묘생장에 미치는 영향
서병수(Byung Soo Seo),(Brian Richardson),(Arthur Vanner),(Graham Coker) 한국산림과학회 1997 한국산림과학회지 Vol.86 No.1
Second year results are presented from a trial designed to quantify the reduction in radiata pine (Pinus radiates D. Don) seedling growth caused by competition from a range of important weed species on a moist North Island site in New Zealand. Radiates pine seedlings(1/0) were grown on the weed free control and with either herbaceous broadleaves, grass, broom, pampas, buddleia, or gorse. Resource(nutrient and water) levels were varied by factorial +/- irrigation and fertilizer treatments, Radiates pine seedling volume growth 21 months after planting was greatest when it was grown on the weed free control or in association with gorse, and was least when grown with either buddleia or pampas. There was no evidence that the effects of the weeds on seedling growth were mediated by either competition for water or nutrients. Tall, fast-growing species that overtopped the seedlings (broom, buddleia, pampas) had the greatest effect on seedling growth and the magnitude of the effect was correlated with degree of overtopping. This implies that shading or competition for light is probably an important factor.
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