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arXiv quant-ph/9909083quant-ph
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基于量子Zeno效应的高效量子询问测量

High-efficiency quantum interrogation measurements via the quantum Zeno effect

P. G. Kwiat, A. G. White, J. R. Mitchell, O. Nairz, G. Weihs, H. Weinfurter, A. Zeilinger

摘要:

量子询问现象允许人们在没有测量光与其相互作用的情况下光学检测吸收物体的存在。在量子芝诺效应的应用中,物体抑制了光的相干演化,使得询问光子被吸收的概率原则上可以任意小。我们已经实现了这种技术,证明效率超过50%的理论最大值的原始“无交互”的测量建议。我们还预测和实验验证了以前未被怀疑的依赖损失,效率高达73%的观察和效率高达85%的可行性被证明。

英文摘要:

The phenomenon of quantum interrogation allows one to optically detect the presence of an absorbing object, without the measuring light interacting with it. In an application of the quantum Zeno effect, the object inhibits the otherwise coherent evolution of the light, such that the probability that an interrogating photon is absorbed can in principle be arbitrarily small. We have implemented this technique, demonstrating efficiencies exceeding the 50% theoretical-maximum of the original ``interaction-free'' measurement proposal. We have also predicted and experimentally verified a previously unsuspected dependence on loss; efficiencies of up to 73% were observed and the feasibility of efficiencies up to 85% was demonstrated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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