Nonlinear behavior of geometric phases induced by photon pairs

被引:9
作者
Kobayashi, H. [1 ]
Ikeda, Y. [1 ]
Tamate, S. [1 ]
Nakanishi, T. [1 ]
Kitano, M. [1 ]
机构
[1] Kyoto Univ, Dept Elect Sci & Engn, Kyoto 6158510, Japan
来源
PHYSICAL REVIEW A | 2011年 / 83卷 / 06期
关键词
PANCHARATNAMS TOPOLOGICAL PHASE; BERRY PHASE; QUANTUM; STATES; SPIN; INTERFEROMETRY; INTERFERENCE; SWITCH; LIGHT; LIMIT;
D O I
10.1103/PhysRevA.83.063808
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this study, we observe the nonlinear behavior of the two-photon geometric phase for polarization states using time-correlated photon pairs. This phase manifests as a shift of two-photon interference fringes. Under certain arrangements, the geometric phase can vary nonlinearly and become very sensitive to a change in the polarization state. Moreover, it is known that the geometric phase for N identically polarized photons is N times larger than that for one photon. Thus, the geometric phase for two photons can become two times more sensitive to a state change. This high sensitivity to a change in the polarization can be exploited for precision measurement of small polarization variation. We evaluate the signal-to-noise ratio of the measurement scheme using the nonlinear behavior of the geometric phase under technical noise and highlight the practical advantages of this scheme.
引用
收藏
页数:9
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