Modern quantum mechanics delves into the fundamental principles governing the behavior of matter at the atomic and subatomic levels. It introduces concepts such as quantum entanglement, superposition, probability amplitudes, wave-particle duality, and the uncertainty principle. Using mathematical tools like operators, Hilbert space, and Schrödinger’s equation, it provides a framework for describing and predicting the dynamics of quantum systems. Experimental techniques such as quantum interference and teleportation offer insights into the quantum realm and its potential applications in fields like secure communication and quantum computing.