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  1. Hace 1 día · 激光的一种简单的量子描述. 2024-05-27 约 918 字 预计阅读 2 分钟 次阅读. 本文旨在从基本量子动力学出发,推导出激光的相干态。. 考虑一个二能级系统和一个单模光场的相互作用,且光场频率等于能级差。. 二能级系统一开始处于激发态 $|e\rangle$ ,光场处于真空 ...

  2. Hace 5 días · 🌿 Discover peace with "How to Let Go - A Zen Story to Make Your Life Easy"! 🌿 Are you struggling to release what no longer serves you? Join us as we delve in

  3. Hace 4 días · Struggling with negative thoughts? Join us as we delve into a powerful Zen story that teaches how to overcome negativity and find inner peace. In this enlighte