利用绝热性的捷径在激子-极化激元之间有效地产生纠缠
Efficient entanglement generation between exciton-polaritons using shortcuts to adiabaticity
摘要：
我们使用绝热性的捷径，一种方法引入到加速绝热量子动力学，有效地产生耦合半导体微腔中激子-极化激元之间的纠缠。一个实质性的改善，实现了，最近提出的方法，基本上提高了系统的非线性。我们的方法利用了随时间变化的非线性，它可以变得大于腔之间的约瑟夫森耦合，而传统的方法被限制到一个恒定的非线性低于耦合。所建议的程序预计也将在光学的其他研究领域，在非线性相互作用玻色子遇到的应用。
英文摘要：
We use shortcuts to adiabaticity, a method introduced to speed up adiabatic quantum dynamics, for the efficient generation of entanglement between exciton-polaritons in coupled semiconductor microcavities. A substantial improvement is achieved, compared to a recently proposed method which essentially enhances the nonlinearity of the system. Our method takes advantage of a time-dependent nonlinearity which can become larger than the Josephson coupling between the cavities, while the conventional method is restricted to a constant nonlinearity lower than the coupling. The suggested procedure is expected to find also application in other research areas in optics, where nonlinear interacting bosons are encountered.
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