Question

What is the difference between superposition and entanglement?

Answer 1

Hint: For every linear system, the total response of two or more stimuli will always be equal to the sum of the responses of both individual stimuli. This principle is known as the Superposition principle. The phenomenon of Entanglement occurs when two or more particles generated, interact or share spatial proximity in such a way that the quantum state of each group cannot be determined independently of the others.

Complete answer:

Quantum entanglement	Super position
The main difference between quantum entanglement and superposition is that entanglement includes the interchange of quantum information between two particles. Entanglement is the ability of the quantum particle to associate their calculated results with each other.	Superposition includes the uncertainty of one particle being in multiple states.In quantum computing, superposition is described as the ability of a quantum particle to be the combination of all possible states.

Note:
Quantum entanglement has been defined by photons, electrons, neutrinos, molecules and also by tiny diamonds. The uses of entanglement in the area of communication, computing and quantum radar are some hot topics of research at present.
For entanglement one requires superposition since entanglement is a quantum state that cannot be determined without its local constituent, that cannot be described individually but we have to take them as a whole, so the constituent cannot be defined without considering the effect of others. The final state can be defined as the sum of local constituents or product of states of local constituents.
In entanglement, if two-particles have interacted and then separated far away. Then to find the entanglement we have to find the state of the other since the effect after the interaction has not been affected by their distance.