长寿命物质波Bloch振荡和含时非线性处理的动力学局域化
Long lived matter waves Bloch oscillations and dynamical localization by time dependent nonlinearity management
摘要：
本文介绍了一种新的方法来实现光晶格中物质波隙孤子的长寿命Bloch振荡和动力学局域化。该方法是基于依赖于时间的调制的非线性，可以通过实验实现的费什巴赫共振技术。特别是，我们表明，波包的宽度被保存，如果时间调制的非线性采取的线性带谱的曲率成正比，对于最典型的实验设置是很好地近似由谐波时间调制适当的频率。
英文摘要：
We introduce a new method to achieve long lived Bloch oscillations and dynamical localization of matter wave gap solitons in optical lattices. The method is based on time dependent modulations of the nonlinearity which can be experimentally implemented by means of the Feshbach resonance technique. In particular, we show that the width of the wave packet is preserved if time modulations of the nonlinearity are taken proportional to the curvature of the linear band spectrum which for most typical experimental settings are well approximated by harmonic time modulations of proper frequencies.
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