全谱可逆时空双折射
Full-span reversible space-time birefringence
AI总结：
本研究通过编程光波的时空频谱相位，实现了光学晶体中双折射的宽谱连续调谐，突破传统方法的限制，为超快光学操控和量子信息处理提供新平台。
摘要：
双折射，即在各向异性晶体中光的偏振依赖分裂，使光现象和先进功能如光学通信、非线性光学和量子光学多样化。然而，传统控制双折射的方法通常依赖于工程光学晶体结构或应用外部刺激如电场、机械应力或热变化，这些方法往往受限于调谐范围有限、与紧凑光子设备集成的挑战或响应时间慢。在这里，我们引入了一种新的自由度，通过编程入射光波的时空频谱相位来操控光在光学晶体中的双折射。我们证明了这种方法实现了比传统双折射调谐更宽超过100倍的频谱连续调谐，从正通过零到负值，无论晶体的光学符号，且没有固有物理限制。这种独特的光学行为为研究各向异性介质中波流的复杂动态提供了灵活的平台，而这种宽调谐的时空双折射将推动超快光学操控、光学计算和量子信息处理等应用的发展，这些应用需要快速灵活的设备重新配置。
英文摘要：
Birefringence, the polarization-dependent splitting of light in anisotropic crystals, enables diverse optical phenomena and advanced functionalities such as optical communication, nonlinear optics, and quantum optics. However, conventional methods for controlling birefringence typically rely on engineering the optical crystal structure or applying external stimuli such as electric fields, mechanical stress or thermal variations, which are often constrained by limited tunability, challenges in integration with compact photonic devices or slow response time. Here, we introduce a new degree of freedom to manipulate the birefringence of light propagation in optical crystals through programming the spatiotemporal spectral phase of the incident light wave. We demonstrate this approach achieves continuous tuning of birefringence across a spectrum more than 100 times broader than that achievable with conventional birefringence tuning, spanning from positive through zero to negative values, irrespective of the crystal's optical sign and without inherent physical limitations. This unique optical behavior provides a versatile platform for investigating the complex dynamics of wave flow in anisotropic media, while the broad tunability of this space-time birefringence will spur innovations in ultrafast optical manipulation, optical computation, and quantum information processing-applications that demand rapid and flexible device reconfiguration.
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。
