What is Quantum Internet and how it is helping us in the future.
                     WHAT IS QUANTUM INTERNET AND HOW 
IT IS HELPING US IN THE FUTURE?
INTRODUCTION
 The quantum internet is a network that will 
allow quantum devices to share any 
knowledge in an atmosphere that harnesses 
the peculiar laws of quantum mechanics. 
 In principle, this will offer unparalleled 
capabilities to the quantum internet that can 
not be carried out with today's web 
applications.
Source: www.theconversation.com
HOW IT WORKS?
 Data can be encoded as qubits and can be 
generated in quantum machines such as a 
quantum computer or a quantum processor. 
 And in basic terms, the quantum internet 
would require moving qubits through a 
network of several physically isolated 
quantum computers. 
Source: www.zdnet.com
WHAT TYPE OF INFORMATION CAN WE EXCHANGE WITH 
QUANTUM?
 The fact that qubits, which harness the 
fundamental laws of quantum mechanics, 
behave very differently than classical bits, is 
key to quantum communication. 
 A classical bit can essentially only be one of 
two states when it encodes data. 
 Much like a light switch has to be either on or 
off, and either dead or alive has to be just like 
a cat, so a bit has to be either 0 or 1.
Source: www.zdnet.com
QUANTUM (SAFER) COMMUNICATIONS
 Most information is encrypted when it comes 
to conventional communications by 
transmitting a shared key to the sender and 
recipient, and then using this universal key to 
encrypt the document. 
Source: www.zdnet.com
SECURITY
 The security of most traditional 
communication today is based on an 
algorithm for generating keys that are 
challenging, though not impossible, for 
hackers to crack. 
 That is why researchers are looking at making 
this "quantum" communication method. 
Source: www.theconversation.com
QUANTUM KEY DISTRIBUTION (QKD)
 The principle is at the centre of an evolving 
cryptography field called quantum key 
distribution (QKD).
 By encoding the cryptography key into 
qubits, QKD operates by making one of the 
two parties encrypt a piece of classical info. 
Source: www.zdnet.com
WHY A QUANTUM INTERNET?
 At the moment, the usual way of generating 
QKD consists of transmitting qubits through 
optical-fiber cables in a one-directional way 
to the receiver; but those greatly reduce the 
protocol's efficacy. 
 In a fiber-optic cable, qubits can quickly get 
misplaced or distributed, which means that 
quantum signals are very vulnerable to error 
and fail to travel long distances. 
Source: www.zdnet.com
HOW DOES ENTANGLEMENT WORK?
 By contrast, the very principle of 
teleportation involves the absence of a 
physical network that bridges communication 
devices. 
 But it remains that in the first place, and then 
preserved, entanglement needs to be 
established.
Source: www.zmescience.com
WHAT ELSE COULD WE DO WITH THE QUANTUM INTERNET?
 To link to the quantum internet, researchers 
would not require a particularly powerful 
piece of quantum hardware-in fact, even a 
single-qubit processor might do the job. 
 But scientists hope that they will build a 
quantum supercomputer to overshadow them 
all by linking together quantum machines.
Source: www.zdnet.com
WHAT COULDN'T WE DO WITH THE QUANTUM INTERNET?
 The quantum internet will not for the near 
future and can be used to share data like the 
way we usually do on our laptops. 
 It will take predicting a few decades or more 
of technical developments to envision a 
generalised, mainstream quantum internet.
Source: www.zdnet.com