Fermilab
Quantum Entanglement: Spooky Action at a Distance
Quantum mechanics is one of the most mindblowing theories of modern physics. In this video, Fermilab’s Dr. Don Lincoln explains what the phrase “quantum entanglement” means and how two objects can be connected by seemingly crazy quantum effects.

Arvin Ash
Quantum Entanglement and the Great BohrEinstein Debate
Space Time  PBS Digital Studios
Parth G
Quantum Entanglement Explained for Beginners
Physics Concepts Made Easy
Most entanglement videos discuss the concept just using Bell States, which were first discussed by Einstein, Podolsky, and Rosen, in their paper on the EPR Paradox. These states are special cases that allow us to understand what an entangled quantum state is most easily, but they aren't the general case. I wanted to discuss the general case here, and what it specifically means to have an entangled state.
To do this, we first needed to understand that quantum physics tells us that an isolated system will be in a superposition of all possible states, so I described this in brief detail. This is really one of the first mindbending ideas we come across when learning quantum physics, and I'd like to go into more detail about this in a future video. I also used bra and ket notation (which is the commonly used notation used by quantum physicists) in order to show you exactly how quantum physicists would see all of this mathematics, and how they would go about navigating it, but hopefully it isn't massively distracting or overly complicated. If it is though, drop me a comment down below and I'll be more than happy to answer any questions. Also, if I've made a mistake then do let me know down below too as I'd like to correct it! Lastly, thank you all for 20k subscribers! It means a lot to me. Over the next few days and weeks, I'll be working on a vlog for IGTV, which was filmed when I went to New York for a holiday. Keep an eye out for that by follow me on Instagram @parthvlogs. Thanks for watching, and I'll see you soon! 
World Science Festival
Quantum Reality: Space, Time, and Entanglement
Brian Greene moderates this fascinating program exploring the fundamental principles of Quantum Physics. Anyone with an interest in science will enjoy this thoughtprovoking and highly entertaining show.
