The MacBook in your lap, the phone in your pocket are classical computers
Because the calculations are done using bits that can exist as either a one or a zero
Quantum computers take things to an atomic level
Those Newtonian laws ,those of friction and gravity
They break down
Yes break down when applied to these cheeky little atoms
So now what? Then we develop new rules because nobody can escape the eyes of the law
We call these rules quantum mechanics
instead of using bits, quantum computers use quantum bits or qubits
which are atomic nuclei I am not kidding really in layman's terms. They're hyper evolved forms of bits and can process much
much larger quantities of data in an exponentially less time frame
Well, since we are dealing with atoms, we cannot use bulky transistors like we do in classical computers to process data
Instead we use super positioning and entanglement
Big terms I know but don't be scared. The magic about qubits is that they can take any value between one and zero
Including complex numbers. Remember those the root of -1 and i
Argand diagrams? I'm sure you remember . Good
Super positioning is a process where these qubits take values of a 1 and a 0 at the same time
Not either or. Both. They can exist at two places at once
We can measure them to find the qubit state
through classical methods and when this measurement is done
Then the qubits assumed one definite state. To explain more clearly
You do not measure ice temperature with the ruler
Similarly to measure qubits, you need a quantum measuring system
unlike classical computers processing one bit holding one piece of information
quantum computers process a qubit holding tremendously large data
entanglement links multiple qubits together. These links mean that the behavior of one cubit affects the other
even over large distances
They behave as one cubit storing that humongous piece of data without data corruption
Naturally a curious mind will wonder what will I do with light speeds of processing?
Simple it's not only about you
What if humanity had a simulation of the universe? We could find another earth to migrate to.
What if a digital human was created?
Clinical trials would be much faster and vaccines released much quicker
What if we had a Dyson Sphere?
Our solar system would be a spaceship and we could build trade systems across the galaxy.
Build a universal civilization.
Endless opportunities
Global, nay Universal benefit
