Squeezing the collective spin of a dilute atomic ensemble by cavity feedback
Squeezing the collective spin of a dilute atomic ensemble by cavity feedback
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DOI：
10.1103/physreva.81.021804
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发表时间：
2009-11
影响因子：
2.9
通讯作者：
M. Schleier-Smith;I. Leroux;V. Vuleti'c
中科院分区：
文献类型：
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作者：
M. Schleier-Smith;I. Leroux;V. Vuleti'c
我们提出并分析了一种通过与光谐振腔的驱动模相互作用来动态且无条件地压缩稀薄原子系综的集体自旋的简单方法[I.D.Leroux，M.H.Schleier-Smith，和V.Vultic，Phys.莱特牧师。104、073602(2010年)]。结果表明，在强集体系综-共振腔耦合的情况下，可以实现实质性的压缩。压缩最终受限于向自由空间发射的光子或布洛赫球体的曲率。我们得出了两个限制，并展示了各自的优势所在。
We propose and analyze a simple method to squeeze dynamically and unconditionally the collective spin of a dilute atomic ensemble by interaction with a driven mode of an optical resonator, as recently demonstrated [I. D. Leroux, M. H. Schleier-Smith, and V. Vuletic, Phys. Rev. Lett. 104, 073602 (2010)]. We show that substantial squeezing can be achieved in the regime of strong collective ensemble-resonator coupling. The squeezing is ultimately limited either by photon emission into free space or by the curvature of the Bloch sphere. We derive both limits and show where each prevails.