It's almost always the last topic in the first semester of introductory physics—angular momentum. Best for last, or something? I've used this concept to describe everything from fidget spinners to ...

This course introduces the quantum mechanical concept of angular momentum operator and its relationship with rotation operator. It then presents the angular momentum operators, their eigenvalues and ...

Multi-dimensional entanglement is a way—in addition to multi-particle entanglement—to extend the usual two-dimensional two-particle state. There have been suggestions 12,13 (and only a ...

In recent years, there has been a growing interest in integrated photonic circuits as a promising platform for future quantum information applications 12, taking advantage of their compact dimensions, ...