Dual quantum nondemolition measurements via successive soliton collisions

被引:16
作者
Friberg, SR
Mukai, T
Machida, S
机构
[1] NTT, Basic Res Labs, Kanagawa 2430198, Japan
[2] Yamamoto Quantum Fluctuat Project, Musashino, Tokyo 1800012, Japan
关键词
D O I
10.1103/PhysRevLett.84.59
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
integral(0)(infinity) dse(-s(m2+2D))[I-0(2s)](D) Quantum mechanics allows quantum nondemolition (QND) variables to be measured without being changed. This requires QND variables to be initially in an eigenstate and measurement backaction noise to be directed into conjugate variables. Experimental demonstrations thus require two measurements: the first to collapse variables toward an eigenstate and the second to show results identical to the first. Here, we report results from two successive soliton-collision QND measurements that optical correlation measurements show to be nearly identical.
引用
收藏
页码:59 / 62
页数:4
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