Why in News?

• Recently quantum processor of Google solved a problem in just 3 minutes.

About:

• It describes the point where quantum computers can do things that classical computers cannot.
• Google had achieved Quantum Supremacy by solving a problem which even with the most powerful classical computer available today would take about 10,000 years to solve in just 3 minutes.

Significances:

• Help to discover exotic materials for variety of requirements.
• Provide fool proof cryptographic protection against online frauds.
• Enable drug discovery to fight diseases.
• Design efficient batteries.
• Smarter devices and gadgets.

Qubit/Quantum Bit

• It is the basic unit of quantum information.
• It is a two-state quantum mechanical system, one of the simplest quantum systems displaying the peculiarity of quantum mechanics.
• In a classical system, a bit would have to be in one state or the other.
• Quantum mechanics allows the qubit to be in a coherent superposition of both states simultaneously, a property which is fundamental to quantum mechanics and quantum computing.
• The power of the quantum computer comes from its inherent parallelism, the ability to manipulate a large collection of qubits in one shot in ways that a classical computer will not be able to match up.