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We investigate the effect of decoherence from a spin environment on the quantum channel capacity.Our results imply that the time evolution of the quantum channel capacity depends on the number of freedom degrees of the environment,the tunneling element,the initial state of the environment,and the system-environment coupling strength.From the analysis,we find that the strong tunneling elements and the weak coupling strength can enhance the quantum channel capacity while the environment with a large number of freedom degrees and the strong coupling strength will shrink it. 相似文献
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NO2分子电子激发态荧光辐射寿命的测定 总被引:1,自引:0,他引:1
利用激光诱导荧光技术,实验测定了NO2分子513~520 nm范围内AA~U22B2电子激发态6个不同振转能级激光诱导荧光衰减寿命,研究了激发态荧光寿命与气压和激发波长的关系,得到了无碰撞衰减寿命和碰撞猝灭系数,并对其反常长寿命进行了讨论 相似文献
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微加工中一种新型刻蚀深度实时检测系统 总被引:5,自引:2,他引:3
实现了一种新型刻蚀深度实时检测系统,整个系统对温度漂移,气体流动与外界振动等环境因素极不敏感,系统测量误差小于0.98%,实现了在真空环境下刻蚀深度的实时监视与检测,对二元光学做加工具有现实意义。 相似文献
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