Controllable Vacuum-Induced Di Raction of Matter-Wave Superradiance Using an All-Optical Dispersive Cavity
Shih-Wei Su1, Zhen-Kai Lu2, Shih-Chuan Gou1, Wen-Te Liao3,4,5,6*
1Physics, National Changhua University of Education, Changhua, Taiwan
2Max Planck Institute for Quantum Optics, Garching, Germany
3Physics, National Central University, Taoyuan, Taiwan
4Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
5Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
6Center for Free-Electron Laser Science, Hamburg, Germany
* presenting author:WEN-TE LIAO, email:wente.liao@g.ncu.edu.tw
Cavity quantum electrodynamics (CQED) has played a central role in demonstrating the fundamental principles of the quantum world, and in particular those of atom-light interactions. Developing fast, dynamical and non-mechanical control over a CQED system is particularly desirable for controlling atomic dynamics and building future quantum networks at high speed. However conventional mirrors do not allow for such flexible and fast controls over their coupling to intracavity atoms mediated by photons. Here we theoretically investigate a novel all-optical CQED system composed of a binary Bose-Einstein condensate (BEC) sandwiched by two atomic ensembles. The highly tunable atomic dispersion of the CQED system enables the medium to act as a versatile, all-optically controlled atomic mirror that can be employed to manipulate the vacuum-induced diffraction of matter-wave superradiance. Our study illustrates a innovative all-optical element of atomtroics and sheds new light on controlling light-matter interactions.

Reference
S.-W. Su, Z.-K. Lu, S.-C. Gou and W.-T. Liao, Sci. Rep. 6, 35402 (2016).
http://www.nature.com/articles/srep35402


Keywords: Bose-Einstein condensate, Electromagnetically induced transparency, Cavity quantum electrodynamics, Atomic optics, Superradiance