What role does quantum entanglement play in quantum computers?

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SUMMARY

Quantum entanglement is a crucial phenomenon in quantum computing, enabling the observation of qubit values without direct interaction, thus preserving their state. This property contributes to the inherent parallelism of quantum computers, allowing qubits to exist in superpositions of 0 and 1. As a result, quantum computers can perform calculations at exponentially faster rates compared to classical computers. The discussion highlights the significant impact of quantum entanglement on computational speed and efficiency.

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Jalo
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I've been reading about quantum entanglement, and I read in many websites that it plays a very important role on quantum computers. I tried to find why, but the only information I got was that quantum entanglement allowed us to see the value of a qubit without interacting directly with it (and changing it as a consequence). Is this the only contribution quantum entanglement has to offer quantum computers?
I've been trying to find an answer on the web, but I couldn't find any specific information. I suspect that quantum entanglement is related to the inherent parallelism on quantum computers, but I'm not sure about that either...

All answers would be appreciated.
Daniel
 
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I think it because each bit rather than being 0 or 1 can exist in a superposition of both. This would mean that the speed of calculations could be speeded up greatly. Consider the number of possible outcomes after 3 steps. With the normal bit you have 2x2x2=8, but with the quibit you have, 4x4x4=64 and with more steps the greater the ratio.
 

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