Semiconductor microcavities can support quasiparticles which are half-light and half-matter with interactionsudpossessed by neither component alone. We show that their distorted dispersion relation forms the basis ofuda quasiparticle ‘‘trap’’ and elicits extreme enhancements of their nonlinear optical properties. When driven byuda continuous wave laser at a critical angle, the quasiparticles are sucked into the trap, condensing into audmacroscopic quantum state which efficiently emits light.ududThis device is thus an optical parametric oscillatorudbased on quasiparticle engineering. In contrast to a laser, macroscopic coherence is established in the electronic excitations as well as the light field. This paves the way to new techniques analogous to those established in atomic and superconducting condensates, such as ultrasensitive solid-state interferometers.
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机译：半导体微腔可以支撑半光和半物质的准粒子，而这两种成分都不具有单独的相互作用。我们证明了它们扭曲的色散关系构成了“准准粒子”“捕集”的基础，并极大地增强了它们的非线性光学特性。当由连续波激光器以某个临界角驱动时，准粒子被吸入阱中，凝结成能有效发光的“宏观”量子态。 ud ud因此该设备是基于准粒子工程的光学参量振荡器。与激光相反，在电子激发以及光场中建立了宏观相干性。这为类似于原子和超导冷凝物中建立的新技术铺平了道路，例如超灵敏固态干涉仪。
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