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Phys Rev Lett. 2017 Jan 6;118(1):013901. doi: 10.1103/PhysRevLett.118.013901. Epub 2017 Jan 5.

Matter-Wave-Optical-Wave Mixing-Induced Transparency and a Nonhyperbolic Matter-Wave Quasisoliton in Quantum Gases.

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Department of Physics, East China Normal University, Shanghai 200241, China.
MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA.
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.


The realization of atomic quantum gases has brought out surprising effects that have no correspondence in nonlinear optics with thermal gases, presenting intriguing and exciting challenges to the research discipline of nonlinear optics which has matured since the invention of the laser. Here, we show an unexpected optical wave-mixing gain cancellation effect in a quantum gas that restricts an, otherwise, strongly enhanced backward-propagating light-matter wave-mixing process. This results in a wave-mixing induced transparency and a nonhyperbolic quasi-matter-wave soliton that opens new research opportunities in hydrodynamic fluid research of degenerate quantum gases, such as phonon scattering in a two-dimensional sonic black hole horizon.

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