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arXiv quant-ph/0107053quant-ph
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原子气体中慢极化激元的系统描述

A Systematic Formulation of Slow Polaritons in Atomic Gases

G. Juzeliunas, H. J. Carmichael

摘要:

我们制定了一个理论,在原子气体中的慢极化激元,并将其应用到慢下来,存储,和重定向的激光脉冲在EIT介质。耦合的物质和辐射的正常模式是通过一个完整的对角化的无耗散哈密顿量。远离EIT共振,其中极化激元获得激发态的贡献,寿命被引入作为第二步。与失谐包括各种四波混频的可能性进行了分析。我们专门研究了通过反转控制光束来恢复停止的极化激元的可能性。

英文摘要:

We formulate a theory of slow polaritons in atomic gases and apply it to the slowing down, storing, and redirecting of laser pulses in an EIT medium. The normal modes of the coupled matter and radiation are determined through a full diagonalization of the dissipationless Hamiltonian. Away from the EIT resonance where the polaritons acquire an excited-state contribution, lifetimes are introduced as a secondary step. With detuning included various four-wave mixing possibilities are analyzed. We investigate specifically the possibility of reverting a stopped polariton by reversing the control beam.

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