QUANTUM PHYSICS MANIA

  Hyperentanglement Explained: What Is It and How Does It Change Quantum Physics? Hyperentanglement is when particles become entangled in  more than one property at once —for example, spin   and  momentum, or polarisation  and  energy-time—and in this article, we’ll walk through how it works, the landmark experiments that proved it, real-world uses, and the hard engineering problems we still have to solve. Read on, and we’ll make this strange quantum stuff feel tangible. Pre-Read: Core Concepts You Should Know Before Hyperentanglement To  truly appreciate  hyperentanglement experiments , it is helpful to understand a few key tools and techniques that physicists employ . Don’t worry—you don’t need a PhD. If you’ve done high school physics, these will click. 1. Spontaneous Parametric Down-Conversion (SPDC) SPDC  occurs within a  nonlinear crystal , a specialised  optical material. When a laser beam (with very energetic photons) e...