Okay you have two weeks left to finish
editing a video for a contest. Great this
happens so many times that you start
making this face while you edit or
maybe you're just trying to play game in
HD. These things happen because your
laptop doesn't have enough memory to
perform operations then store and
Now think about how difficult it would be for a computer to simulate traffic,
biological processes and chemical reactions, where every part of the system is affecting each other at
the same time. This is when quantum
computers come in to help. Let's take two
classical bits. Recall that a bit is the
basic unit of information.
A computer would take would take this information and perform an operation until they return the value
you want. It's just like when we do trial
and error in a math problem but we all
know that it's slow process. A quantum
computer on the other hand contains
quantum bits or qubits.These are
isolated particles in a state of
superposition, a fancy way of saying that
15 percent of it thinks the answer is 40
20% thinks it's 39 and so it goes. Sounds
crazy but here's a demonstration, the
double slit experiment. We expect an
electron to pass through only one of the
slits but because the electron thinks
it's half particle and half wave. It passes
through both at the same time. It
interferes with itself as a wave and we
see that in the pattern it produces. If
the electron weren't half wave there would
be no pattern. If it weren't half
particle we wouldn't be able to see a
pattern. Now when it comes to measuring
the state
We don't really have an explanation as to how these quantum objects "decide" on taking a specific state,
but as far as experimentation goes, all we know is that they're random. But we can still take advantage of that
randomness. Instead of computing each
possible value we let quantum objects
choose their own state to be in , as we
observe bigger systems that run on this
quantum randomness like the formation of
tiny chemical bonds so we understand how
to make materials stronger, and it gets
better, we can actually influence the
behavior of quantum objects. Like a
city with roads a barriers a quantum
circuit can be designed such that
specific qubits interact with the ones
we want them to. Okay let's think of
bits as cars, in an deal world if
you know where each and every car planned to go 
you can perfectly control traffic but in
reality we wouldn't know unless we ask
the person driving the car. Fortunately a
car under the law of superposition has
its own wave that tells us where they might
be at a certain time. When we have two
cars and therefore two waves that come
together we can time their entrances so
they avoid bumping into each other. We
design our streets to have cars interact
in such a way that in the end we get to
at least lessen traffic. Now let's talk about
taking information from an actual qubit,
the spin. The positive spin is more
energetic than the negative spin.
A positive spin qubit moves around
more and we can detect them as current but
as we measure the state, you lose
information like when you're asked what
you want to eat. After choosing it's like
you never considered the other options
It's okay this one part tells us a lot about the whole. I hope you now have an idea as to how quantum computers work.
Thanks for watching and I'll be seeing you next time!
 
