Entanglement – spooky action at a distance

The quantum property of entanglement was referred to by Einstein as Spooky action at a distance. Two particles in a system are entangled if one particle in a system cannot be described without taking the other part into consideration. In a quantum computer, qubits demonstrate this property. So, the probability of observing the configuration of one qubit will depend on the probability of observing the configuration of its entangled other half. This property of qubits exists in a quantum system, even when the entangled pair are separated by a good distance. This means, if one qubit spins in a clockwise direction, its entangled pair could spin in a counter-clockwise direction, even when miles apart.

Recently, scientists in China have demonstrated entanglement at a distance of up to 1,200 kilometres. Source: https://phys.org/news/2018-01-real-world-intercontinental-quantum-enabled-micius.html

This experiment was...