Introduction to Quantum Physics

Study Notes

Quantum physics examines nature at atomic and subatomic levels, focusing on energy levels.
Key concept of Quantization: Energy is absorbed or emitted in discrete packets called quanta.
Wave-Particle Duality indicates that particles like electrons display both wave-like and particle-like behaviors.
Superposition allows particles to exist in multiple states simultaneously until observed.
Entanglement creates a link between particles, where the state of one affects the state of another regardless of distance.

Official launch by the Government of India aimed at advancing quantum technology.
Mission was approved in April 2023 with a budget of Rs. 6003.65 crore, spanning from 2023-24 to 2030-31.
Primary goal is to position India as a leader in quantum technology.

Development of quantum computing, communication, sensing, and materials/devices.

Qubit Development: Plans to develop 20-50 qubits in 3 years and reach 50-100 qubits by year five.
Focus on enhancing qubit coherence and refining error correction techniques.
Establishment of specialized labs with cryogenic systems for research.
Aim to boost scientific research capabilities via complex quantum simulations.

Development of Quantum Key Distribution (QKD) for highly secure communication, previously tested by ISRO and DRDO.
Creation of a national quantum communication network to secure both national and international data transmission.
Engagement in technological advancements, including quantum repeaters, to expand quantum networks beyond current limits.
Emphasis on applications in defense and government sectors, prioritizing security in communications.