Bose fireworks
Mon, 12/25/2017 - 23:58
in
Title: Bose fireworks
Speaker: Prof. Cheng Chin 金政教授 (James Franck Institute, Enrico Fermi Institute, University of Chicago, USA)
Time: 10:30 AM, December 26 (Tuesday), 2017
Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)
Contact: Dr. Ming-Shien Chang 張銘顯博士
Speaker: Prof. Cheng Chin 金政教授 (James Franck Institute, Enrico Fermi Institute, University of Chicago, USA)
Time: 10:30 AM, December 26 (Tuesday), 2017
Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)
Contact: Dr. Ming-Shien Chang 張銘顯博士
Abstract:
Experiments frequently come with surprises. Here I will discuss a serendipitous discovery of Bose fireworks, the sudden emission of bright, narrow jets of matterwaves from Bose-Einstein condensates with oscillating interaction strength. This structure emerges from collective collisions of the condensate, seeded by quantum fluctuations and amplified by Bose stimulation. The process resembles a matterwave version of superradiance. Based on a novel pattern recognition and correlation analysis, we identify the fundamental collision processes that underlie the structure of the fireworks.
Reference: Logan W. Clark, Anita Gaj, Lei Feng, Cheng Chin, Collective emission of matter-wave jets from driven Bose-Einstein condensates, Nature 551, 356 (2017).
