Large Fizeau's light-dragging effect in a moving electromagnetically induced transparent medium

被引:57
作者
Kuan, Pei-Chen [1 ]
Huang, Chang [1 ]
Chan, Wei Sheng [1 ]
Kosen, Sandoko [1 ]
Lan, Shau-Yu [1 ]
机构
[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore
基金
新加坡国家研究基金会;
关键词
GROUP-VELOCITY; ATOMIC GAS; RING LASER; INTERFEROMETRY; POLARITONS; OPTICS;
D O I
10.1038/ncomms13030
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
As one of the most influential experiments on the development of modern macroscopic theory from Newtonian mechanics to Einstein's special theory of relativity, the phenomenon of light dragging in a moving medium has been discussed and observed extensively in different types of systems. To have a significant dragging effect, the long duration of light travelling in the medium is preferred. Here we demonstrate a light-dragging experiment in an electromagnetically induced transparent cold atomic ensemble and enhance the dragging effect by at least three orders of magnitude compared with the previous experiments. With a large enhancement of the dragging effect, we realize an atom-based velocimeter that has a sensitivity two orders of magnitude higher than the velocity width of the atomic medium used. Such a demonstration could pave the way for motional sensing using the collective state of atoms in a room temperature vapour cell or solid state material.
引用
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页数:6
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