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Quantum Mechanics

Quantum Mechanics






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    Quantum Mechanics Quantum Mechanics Presentation Transcript

    • QUANTUM MECHANICS What is Quantum Mechanics? A branch of Physics which deals with physical phenomena at microscopic scales.
    •       Black body radiation Instability of classical atoms Quantization of certain physical properties Wave-particle duality Uncertainty Principle Quantum Entanglement Why Do We Need Quantum Mechanics?
    • How does a quantum system work? Quantum System Quantum State Operator Eigen State Wave function
    • A set of mathematical variables that maximally describes a quantum system but not fully. Types of quantum states 1. Pure quantum states 2. Mixed quantum states Quantum State
    •  Why do particles behave as  Where does the relation of waves? momentum, p, Plank’s constant, h, and wavelength come from?  How does the double slit experiment show wave-particle duality? Wave-Particle Duality
    •  Why can’t we measure position and momentum of a particle simultaneously?  What constitutes a measurement?  What does the Uncertainty Principle predict? Uncertainty Principle
    • If a physical system may be in some configuration, and if the physical system could be in another configuration then it is in a state which is a superposition of the two.  What if the system is definitely in one state?  Why should there be quantum superposition?  How do we know the intermediate character?  What are the predictions of quantum superposition?  Quantum Superposition
    •  A system stops being in the superposition of states and becomes either one or the other when an observation takes place. Schrodinger’s cat paradox
    • It occurs when particles interact physically and then become separated; the type of interaction is such that each resulting member of a pair is properly described by the same quantum mechanical description (state) which is indefinite in terms of factors such as position, momentum, spin, polarization.  Applications of entanglement  Quantum Teleportation  Super dense coding  Quantum Entanglement
    •  A process by which a qubit (the smallest unit of quantum information) can be transmitted exactly from one location to another, without the qubit being transmitted through the intervening space. Quantum Teleportation
    • Quantum Teleportation between Flying (Photonic) and Stationary (Atomic) Qubits