Vacuum induced transparency and slow light phenomena in a two-level atomic ensemble controlled by a cavity

Vacuum induced transparency and slow light phenomena in a two-level atomic ensemble controlled by a cavity
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由腔控制的两级原子系综中的真空诱导透明度和慢光现象

DOI:
10.1088/1674-1056/24/9/094205
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发表时间:
2015-08
期刊:
影响因子:
1.7
通讯作者:
聂文杰
聂文杰
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
郭玉杰;聂文杰

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研究了由高精细度腔控制的二能级原子系综的光学性质。即使在没有外部驱动的情况下,腔最初处于真空状态,原子系综的探测响应也可以显着改变。当原子与腔场的耦合强度足够大且腔场衰减率远小于原子阻尼率时,在没有驱动的情况下,腔场中的二能级原子的响应出现了电磁诱导的类双折射相干现象,即真空诱导透明。我们还展示了在这样的原子系综中具有非常低群速度的慢光。
We study the optical properties of a two-level atomic ensemble controlled by a high-finesse cavity. Even though the cavity is initially in the vacuum state in the absence of external driving, the probe response of the atomic ensemble can be dramatically modified. When the collectively enhanced atom–cavity coupling is strong enough and the cavity decay rate is much smaller than the atomic damping rate, an electromagnetically induced transparency-like coherent phenomenon emerges with a dip absorption for the response of the two-level atoms in the cavity without driving, and thus is called vacuum induced transparency. We also show the slow light with very low group velocity in such an atomic ensemble.
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