A relaxationless demonstration of the Quantum Zeno paradox on an individual atom

被引:32
作者
Balzer, C [1 ]
Hannemann, T [1 ]
Reiss, D [1 ]
Wunderlich, C [1 ]
Neuhauser, W [1 ]
Toschek, PE [1 ]
机构
[1] Univ Hamburg, Inst Laser Phys, D-20355 Hamburg, Germany
关键词
All Open Access; Green;
D O I
10.1016/S0030-4018(02)01859-X
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The driven evolution of the spin of an individual atomic ion on the ground-state hyperfine resonance is impeded by the observation of the ion in one of the pertaining eigenstates. Detection of resonantly scattered light identifies the ion in its upper "bright" state. The lower "dark" ion state is free of relaxation and correlated with the detector by a null signal. Null events represent the straightforward demonstration of the quantum Zeno paradox. Also, high probability of survival was demonstrated when the ion, driven by a fractionated pi pulse, was probed and monitored during the intermissions of the drive, such that the ion's evolution is completely documented. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:235 / 241
页数:7
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