Three scientists share physics Nobel prize for quantum mechanics work

Quantum entanglement, in a nutshell, means that the properties of one particle can be deduced by examining the properties of a second particle – even if they are separated by a distance. An easy way to imagine this is to think about being given one of two balls – one of which is white and the other is black. If you receive a white ball, you know the ball that remains is black. Importantly, however, the properties of each particle are not fixed until they are examined – in the ball scenario this would mean that both balls are grey until looked at, where upon one turns white and the other black. 

 This lies at the heart of the "spookiness" – the two particles, or balls, appear to be connected, without the need for any signal to be sent between them…

https://www.theguardian.com/science/2022/oct/04/nobel-prize-for-physics-quantum-mechanics-three-scientists