Explanation:

All of the statements are correct.

• The Union Cabinet approved the National Quantum Mission (NQM) with a total outlay of Rs 6,003.65 crore for the period 2023-24 to 2030-31 to scale up research and development and create an innovative ecosystem in quantum technology in the country.  

• The programme was approved after a delay of two years — the government first announced it in the 2020 Budget, with a commitment of about Rs 8,000 crore then.

• The programme will be implemented by the Department of Science and Technology in partnership with others. 

• With this, India will join a league of six nations that have been developing R&D capabilities in quantum computing — the USA, China, Finland, Austria, France, and Canada. 

• Quantum computers use quantum bits, or qubits, and are faster than regular and supercomputers, which use conventional bits. 

• For instance, according to reports, Google’s quantum processor, Sycamore, in 2019 completed a task in 200 seconds that Google claimed, in a Nature paper, would take a state-of-the-art supercomputer 10,000 years to finish.

• The new mission targets developing intermediate scale quantum computers with 50-1,000 physical qubits in 8 years across various platforms like superconducting and photonic technology.

• In classical computing, the smallest and most basic unit of information that can be processed and stored is called a ‘bit’. 

• In quantum computing, the basic unit of information is called a ‘qubit’.

Hence option 4th is correct.