排序方式: 共有9条查询结果,搜索用时 28 毫秒
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双光子B-J模型中类克尔介质对量子态保真度的影响 总被引:1,自引:1,他引:0
研究了充满类克尔介质的高 Q腔中二能级原子与单模相干光场发生双光子相互作用 (双光子 B- J模型 )时 ,类克尔介质对该体系量子态保真度的影响。结果表明 :当类克尔介质与光场耦合较强时 ,原子的量子态保真度为 1,即原子处于退纠缠状态 ,此时光场对原子的作用被类克尔介质所屏蔽。 相似文献
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Kerr效应对强度耦合的多光子J—C模型中光场反聚束效应的影响 总被引:1,自引:0,他引:1
利用充满Kerr介质的高Q腔中依赖强度耦合的多光子J-C模型的Harmiltonian,求解了该系统的态矢,研究了Kerr效庆对光场反聚束效应的影响。 相似文献
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AbstractWe study the quantum dynamics of an effective two-level atom interacting with two modes via Raman process inside an ideal cavity in the presence of Kerr non-linearity. The cavity modes interact both with the atom as well as the Kerr-like medium. The unitary transformation method presented here, not only solves the time-dependent problem, but also provides the eigensolutions of the interacting Hamiltonian at the same time. We study the atomic-population dynamics and the dynamics of the photon statistics in the two cavity modes. The influence of the Kerr-like medium on the statistics of the field is explored and it is observed that Kerr medium introduces antibunching in mode 1 and this effect is enhanced by a stronger interaction with the non-linear medium. In the high non-linear coupling regime anticorrelated beam become correlated. Kerr medium also introduces non-classical correlation between the two modes. 相似文献
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An optical fiber electric field sensor was constructed by coating a microfiber based knot resonator with propylene carbonate, a liquid electrooptic material. The Kerr electrooptic effect of propylene carbonate changed the refractive index of the liquid in the presence of an electric field and shifted the fringe pattern of the resonator. The electric field was demodulated by monitoring the fringe shift. The sensor was used to characterize sinusoidal electric fields with magnitudes from 200–4000?V/cm and a pulsed field with a 200?µs duration time. This work may provide practical applications for the characterization of electric fields. 相似文献
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徐洪涛 《湖北工业大学学报》2006,21(1):92-94
从普朗克辐射公式出发,推导出非线性系统的能量密度公式,并给出直观的图形和普通黑体作比较.发现,克尔非线性黑体的辐射能量密度和辐射压强都要比普通黑体大,非线性黑体中的热辐射能量密度和辐射压强随着温度和频率的改变有着规律的变化. 相似文献
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丹江口大坝加高工程右岸转弯坝段锯缝方案研究 总被引:1,自引:0,他引:1
丹江口大坝右岸混凝土坝转弯坝段在平面上呈凸向下游的反弧形,在气温长期影响下出现周期性变形.为消除该坝段对坝体稳定及应力不利的变形,并确保帷幕防渗质量,设计确定采用消除横缝间连接的"锯缝"方案,解决反拱反向变位和缩小坝踵拉应力范围.经生产性试验,本项目采用了水平钻孔、绳锯切割的施工方案,设备选型正确,施工效率相对较高,切割出来的横缝能够满足设计要求. 相似文献
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双层耦合膜的磁光克尔效应研究 总被引:2,自引:0,他引:2
稀土-过渡族金属(RE-TM)非晶垂直磁化膜用于磁光记录材料已被广泛研究。为了提高材料的读出性能,提高分辨率,降低误码率,希望材料有较大的磁光克尔旋转角θ_k。本文采用磁光双层膜耦合结构,将信息的记录和读出分别由记录层(Storage Layer)薄膜和读出层(Readout Layer)薄膜完成,将磁光克尔旋转角θ_k由单层膜的小于0.30°,提高到双层膜的0.38°,较好地解决了这一问题。 相似文献
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