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arXiv 2009.00930physics.opticsphysics.app-ph
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光学参量振荡器中的光谱相变

Spectral Phase Transitions in Optical Parametric Oscillators

Arkadev Roy, Saman Jahani, Carsten Langrock, Martin Fejer, Alireza Marandi

摘要:

光子谐振器的光谱特性已经成为一系列基础研究的基础,在经典和量子技术中有着广泛的应用。受驱动的非线性谐振器为远离平衡的相变相关现象提供了肥沃的土壤,这可以打开线性对应物中无法实现的机会。在这里,我们表明,光学参量振荡器(OPO)可以经历二阶相变之间的简并和非简并制度的光谱域。光谱响应的这种突然变化遵循临界点周围的平方根依赖性,表现出对参数变化的高敏感性,类似于异常点周围的系统。我们实验证明这样的相变在二次OPO,映射其动力学的普遍Swift-Hohenberg方程,并将其扩展到克尔OPO。为了强调这一相变的根本重要性和后果,我们表明,发散磁化率的临界点是伴随着自发对称性破缺和不同的相位噪声属性在两个制度,表明超越非线性分岔解释的重要性。我们还预测了一阶光谱相变耦合OPO的发生。我们的非平衡光谱行为的结果可以用于增强传感,先进的计算,和量子信息处理。

英文摘要:

Spectral behaviors of photonic resonators have been the basis for a range of fundamental studies, with applications in classical and quantum technologies. Driven nonlinear resonators provide a fertile ground for phenomena related to phase transitions far from equilibrium, which can open opportunities unattainable in their linear counterparts. Here, we show that optical parametric oscillators (OPOs) can undergo second-order phase transitions in the spectral domain between degenerate and non-degenerate regimes. This abrupt change in the spectral response follows a square-root dependence around the critical point, exhibiting high sensitivity to parameter variation akin to systems around an exceptional point. We experimentally demonstrate such a phase transition in a quadratic OPO, map its dynamics to the universal Swift-Hohenberg equation, and extend it to Kerr OPOs. To emphasize the fundamental importance and consequences of this phase transition, we show that the divergent susceptibility of the critical point is accompanied by spontaneous symmetry breaking and distinct phase noise properties in the two regimes, indicating the importance of a beyond nonlinear bifurcation interpretation. We also predict the occurrence of first-order spectral phase transitions in coupled OPOs. Our results on non-equilibrium spectral behaviors can be utilized for enhanced sensing, advanced computing, and quantum information processing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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