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arXiv · 1711.08886

Bogoliubov-Cherenkov Radiation in an Atom Laser

B. M. Henson·Xuguang Yue·S. S. Hodgman·D. K. Shin·L. A. Smirnov·E. A. Ostrovskaya·X. W. Guan·A. G. Truscott
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Abstract

We develop a simple yet powerful technique to study Bogoliubov-Cherenkov radiation by producing a pulsed atom laser from a strongly confined Bose-Einstein condensate. Such radiation results when the atom laser pulse falls past a Bose-Einstein condensate at high-hypersonic speeds, modifying the spatial profile to display a characteristic twin jet structure and a complicated interference pattern. The experimental observations are in excellent agreement with mean-field numerical simulations and an analytic theory. Due to the highly hypersonic regime reached in our experiment, this system offers a highly controllable platform for future studies of condensed-matter analogs of quantum electrodynamics at ultrarelativistic speeds.

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B. M. Henson, Xuguang Yue, S. S. Hodgman, D. K. Shin, L. A. Smirnov, E. A. Ostrovskaya, X. W. Guan, A. G. Truscott. 2020-04-21. Bogoliubov-Cherenkov Radiation in an Atom Laser. https://doi.org/10.1103/physreva.97.063601

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