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Wigner function and the entanglement of a quantized Bessel-Gaussian vortex state of a quantized radiation field 下载免费PDF全文
A new kind of quantum non-Gaussian state with a vortex structure,termed a Bessel-Gaussian vortex state,is constructed,which is an eigenstate of the sum of squared annihilation operators a2+b2.The Wigner function of the quantum vortex state is derived and exhibits negativity which is an indication of nonclassicality.It is also found that a quantized vortex state is always in entanglement.And a scheme for generating such quantized vortex states is proposed. 相似文献
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建立了分离酪胺与酪氨酸及其它杂质的反相键合相高效液相色谱法,讨论了流动相添加剂对色谱分离的影响和离子相互作用的分离机理。在C8烷基键合相分离柱上,以含Tris-高氯酸盐(20mmol/LTris,用HClO4调节pH为7.9,并添加KClO4,使总高氯酸盐浓度为30mmol/L)的甲醇-水溶液(体积比为40∶60)作为流动相,以对甲苯磺酰胺为内标物,测定了p-酪氨酸脱羧工艺产物——酪胺的质量分数。酪胺样品质量分数测定的准确度和重现性数据为(96.40±0.633)(n=11,RSD=0.66),加样回收率为99.33~100.38。方法可用于工艺条件的选择和酪胺产品质量的检测。 相似文献
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Wigner function and the entanglement of quantized Bessel—Gaussian vortex state of quantized radiation field 下载免费PDF全文
A new kind of quantum non-Gaussian state with vortex structure, termed Bessel-Gaussian vortex state, is constructed, which is an eigenstate of sum of squared annihilation operators a2 + b2. The Wigner function of the quantum vortex state is derived and exhibits negativity which is an indication of nonclassicality. It is also found that quantized vortex state is always in entanglement. And a scheme for generating such quantized vortex states is proposed. 相似文献
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反相高效液相色谱/质谱法同时测定鸡肉中5种喹诺酮药物残留 总被引:1,自引:0,他引:1
采用反相高效液相色谱/四级杆串联质谱(RP-HPLC/MS/MS)同时测定鸡肉中的5种喹诺酮药物(quinolones,QNs)。均质后的鸡肉样品采用磷酸盐缓冲溶液和乙腈的混和溶液提取。提取液经正己烷液-液分配(LLP)去除脂肪后,用C18固相萃取(SPE)柱净化,氨化甲醇洗脱,洗脱液用氮气吹干,流动相定容后,分析物采用LC/MS/MS电喷雾电离(ESI),正离子,多反应监测(MRM)模式检测,外标法定量。在添加浓度2.5~10μg/kg范围内,5种QNs的回收率在79.8%~95.1%之间;相对标准偏差(RSD)均小于11.7%。环丙沙星、丹诺沙星、恩诺沙星检出限(LOD)为0.5μg/kg,沙托沙星为1.0μg/kg,氟甲喹为0.1μg/kg。 相似文献
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问题(2013年“华约”第5题)数列{an}中的各项均为正数,且对任意的n∈N^*满足an+1=an+can^2(c〉0). 相似文献