Interaction between two stopped light pulses

Yi Hsin Chen, Meng Jung Lee, Weilun Hung, Ying Cheng Chen, Yong-Fan Chen, Ite A. Yu

研究成果: Conference contribution

摘要

The efficiency of a nonlinear optical process is proportional to the interaction time. We report a scheme of all-optical switching based on two motionless light pulses via the effect of electromagnetically induced transparency. One pulse was stopped as the stationary light pulse (SLP) and the other was stopped as stored light. The time of their interaction via the medium can be prolonged and, hence, the optical nonlinearity is greatly enhanced. Using a large optical density (OD) of 190, we achieved a very long interaction time of 6.9 μs. This can be analogous to the scheme of trapping light pulses by an optical cavity with a Q factor of 8×109. With the approach of using moving light pulses in the best situation, a switch can only be activated at 2 photons per atomic absorption cross section. With the approach of employing a SLP and a stored light pulse, a switch at only 0.56 photons was achieved and the efficiency is significantly improved. Moreover, the simulation results are in good agreement with the experimental data and show that the efficiency can be further improved by increasing the OD of the medium. Our work advances the technology in quantum information manipulation utilizing photons.

原文English
主出版物標題Frontiers in Physics - 4th International Meeting, IMFP 2013
發行者American Institute of Physics Inc.
頁面17-26
頁數10
ISBN(列印)9780735412200
DOIs
出版狀態Published - 2014 1月 1
事件4th International Meeting on Frontiers in Physics, IMFP 2013 - Kuala Lumpur, Malaysia
持續時間: 2013 8月 272013 8月 30

出版系列

名字AIP Conference Proceedings
1588
ISSN(列印)0094-243X
ISSN(電子)1551-7616

Other

Other4th International Meeting on Frontiers in Physics, IMFP 2013
國家/地區Malaysia
城市Kuala Lumpur
期間13-08-2713-08-30

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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