论文标题
激子 - 波利顿混合物中的介导的相互作用和光子结合状态
Mediated interactions and photon bound states in an exciton-polariton mixture
论文作者
论文摘要
实现强烈互动光子的追求对于基本科学和应用来说仍然是一个重大挑战。在这里，我们探索了在半导体微腔内激子 - 果胶的高度不平衡的两组分量混合物中介导的光子 - 光子相互作用。使用一种理论，该理论考虑了激子之间的非驱动性相关性以及强烈的光耦合，我们证明了由少数族裔偏振子形成的准颗粒形成的准粒子之间有效相互作用的高可调节性，与bose-inenstein Condense（BEC）相互作用。特别是，通过BEC中声音模式的交换介导的相互作用可以使得足够强大以支持两个准粒子的结合状态。由于这些准粒子部分由光子组成，因此这反过来对应于通过BEC传播的光子的二聚体状态。这引起了新的光传输线，其中绑定状态波函数直接映射到传出光子之间的相关性。我们的发现开辟了新的途径，以实现高度非线性光学材料和新型的混合光量子系统。
The quest to realise strongly interacting photons remains an outstanding challenge both for fundamental science and for applications. Here, we explore mediated photon-photon interactions in a highly imbalanced two-component mixture of exciton-polaritons in a semiconductor microcavity. Using a theory that takes into account non-perturbative correlations between the excitons as well as strong light-matter coupling, we demonstrate the high tunability of an effective interaction between quasiparticles formed by minority component polaritons interacting with a Bose-Einstein condensate (BEC) of a majority component polaritons. In particular, the interaction, which is mediated by the exchange of sound modes in the BEC can be made strong enough to support a bound state of two quasiparticles. Since these quasiparticles consist partly of photons, this in turn corresponds to a dimer state of photons propagating through the BEC. This gives rise to a new light transmission line where the bound state wave function is directly mapped onto correlations between outgoing photons. Our findings open up new routes for realising highly non-linear optical materials and novel hybrid light-matter quantum systems.
