Unconditional generation of bright coherent non-Gaussian light from exciton-polariton condensates
Unconditional generation of bright coherent non-Gaussian light from exciton-polariton condensates
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DOI：
10.1103/physrevb.87.201301
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发表时间：
2012-11
影响因子：
3.7
通讯作者：
T. Byrnes;Y. Yamamoto;P. Loock
中科院分区：
文献类型：
--
作者：
T. Byrnes;Y. Yamamoto;P. Loock
激子-极化激元凝聚体被认为是明亮的、相干的非高斯光的确定性光源。激子-极化激元凝聚体由于自发形成相干性，通过微腔镜的光致发光发射相干光。与发射相干高斯光的传统激光器不同，由于激子分量的相互作用，极化激元具有自然的非线性。当相位通过合适的方法（例如注入锁定）稳定时，这在稳态操作下产生具有维格纳函数的负分量的光。与许多其他关于非高斯光源的建议相反，在我们的情况下，光通常具有超过1的平均光子数，并且以连续波出现。这样的源可以在连续变量量子信息和通信中使用。
Exciton-polariton condensates are considered as a deterministic source of bright, coherent nonGaussian light. Exciton-polariton condensates emit coherent light via the photoluminescence through the microcavity mirrors due to the spontaneous formation of coherence. Unlike conventional lasers which emit coherent Gaussian light, polaritons possess a natural nonlinearity due to the interaction of the excitonic component. This produces light with a negative component to the Wigner function at steady-state operation when the phase is stabilized via a suitable method such as injection locking. In contrast to many other proposals for sources of non-Gaussian light, in our case, the light typically has an average photon number exceeding one and emerges as a continuous wave. Such a source may have uses in continuous-variable quantum information and communication.