INTERACTION-FREE MEASUREMENT

被引:433
作者
KWIAT, P [1 ]
WEINFURTER, H [1 ]
HERZOG, T [1 ]
ZEILINGER, A [1 ]
KASEVICH, MA [1 ]
机构
[1] STANFORD UNIV, DEPT PHYS, STANFORD, CA 94305 USA
关键词
D O I
10.1103/PhysRevLett.74.4763
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We show that one can ascertain the presence of an object in some sense without interacting with it. One repeatedly, but weakly, tests for the presence of the object, which would inhibit an otherwise coherent evolution of the interrogating photon. The fraction of "interaction-free" measurements can be arbitrarily close to 1. Using single photons in a Michelson interferometer, we have performed a preliminary demonstration of some of these ideas. © 1995 The American Physical Society.
引用
收藏
页码:4763 / 4766
页数:4
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