Quantum Computing

Internet that we see today is much more evolved and matured than its old counterpart ARPANET, but it still lags in terms of data security and connectivity. For the existing network, the main bottleneck is the communication channel which is slow and insecure.  Is there any chance of communicating with one another through space without using any medium?  This may sound like science-fiction but in near future this seems possible.

The world that we see through our eyes is far more different from the microscopic world of particles where behaviour of nature is really out of our imagination. At these levels classical laws of science do not hold anymore, we have quirky quantum laws to govern these tiny particles.

One of the strangest and counter-intuitive phenomenons in quantum world is quantum entanglement. Its weirdness can be seen through this unexplainable behaviour. Take a photon (light particle) and divide it into two photons and by nature these photons happen to have opposite polarity. But now separate these two photons far away each other (even miles) and if you try to change polarity of one of the photons, what you happen to see is a bizarre thing. The other photon which is far away will reverse its polarity..!  Till now none could figure out how this thing could happen.  These photons are said to be entangled and by some means these photon communicate to its entangled pair to change its state whenever its own state is changed.  

By using this strange property we could achieve Quantum teleportation through which we can teleport information across the space. The heart of it is the entangled pair which must be shared by sender and receiver and after devising a protocol they could start transferring information securely.This idea could pave way for a quantum internet which is totally secure and it practically allows no way for  eavesdropper to peek into network.

P.S:

I tried to simplify certain  things down here and I didn't go deep into subject  but actually  some of the  processes mentioned above needs  mathematical touch. I will be more elaborate in the later posts.