Quantum Technologies

Quantum Technologies

Quantum technologies comprise quantum computing, quantum communication, quantum optics, quantum
information processing, quantum internet and quantum artificial intelligence.
Need for special attention
➢ The interest and excitement about quantum computer is because of its power to dabble with
complex calculations involved in fields like cyber-security which digital computers now deal with.
➢ Quantum communications can enhance (cyber) security, provide unique fingerprints and also
increase available bandwidth for internet networks.
Quantum computer
➢ Quantum computers work by harnessing the properties of quantum mechanics.
➢ Quantum computers use logical units called quantum bits, or qubits for short, that can be put into a
quantum state where they can simultaneously represent both 0 and 1.


Difference between classical and quantum computers

➢ Classical computers process information in a binary format, called bits, which can represent either a
0 or 1.
➢ While the bits in a classical computer all operate independently from one another, in a quantum
computer, the status of one qubit effects the status of all the other qubits in the system, so they
can all work together to achieve a solution.
Output
While a conventional computer outputs the same answer to a problem every time you run a calculation, the
outputs of a quantum computer are probabilistic. That means it does not always produce the same answer.
So to use a quantum computer, you have to run a calculation through the system thousands or even
millions of times, and the array of outputs converge around the answer that is most likely to be correct.
News: Finance minister Nirmala Sitharaman’s Union Budget for 2020-21, presented on February 1, 2020,
proposed Rs 8,000 crore over five years for National Mission on Quantum Technologies and Applications.

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