Quantum computing
- 1. QUANTUM COMPUTING Seminar on the topic Prepared By H Madhavi
- 2. 1.Introduction – What is Quantum Computing? 2.History – The raise of Quantum Computing. 3.Principles 4.The QUBITS 5.Developments – Quantum Computing Models 6.Applications 7.Advantages 8.Disadvantages 9.Conclusion Quantum Computing
- 3. Quantum Computing • Quantum Computing is a computing using quantum- mechanical phenomena, such as superposition and entanglement. • Common digital computing requires the data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits or QUBITS, which can be in superpositions of states.
- 5. Introduction…Contd Quantum Computing Paul Benioff Yuri Manin Richard Feynman Father of Quantum Computing David Deutsch
- 6. Quantum Computing Quantum superposition Quantum entanglement Any two (or more) quantum states can be added together ("superposed") and the result will be another valid quantum state; and conversely, that every quantum state can be represented as a sum of two or more other distinct states. A physical phenomenon that occurs when pairs or groups of particles are generated, interact, or share spatial proximity in ways such that the quantum state of each particle cannot be described independently of the state of the other(s), even when the particles are separated by a large distance.
- 7. A bit of data is represented by a single atom that is in one of two states denoted by |0> and |1>. A single bit of this form is known as a QUBIT. A physical implementation of a qubit could use the two energy levels of an atom. An excited state representing |1> and a ground state representing |0>. Excited State Ground State Light pulse of frequency for time interval t Electron State |0> State |1> Quantum Computing
- 8. Quantum Computing Quantum gate array computation decomposed into a sequence of few- qubit quantum gates One-way quantum computer computation decomposed into a sequence of one-qubit measurements applied to a highly entangled initial state or cluster state Adiabatic quantum computer computation decomposed into a slow continuous transformation of an initial Hamiltonian into a final Hamiltonian, whose ground states contain the solution Topological quantum computer computation decomposed into the braiding of anyons in a 2D lattice
- 9. Quantum Computing Machine Learning Computational Chemistry Financial Portfolio Optimization Logistics and Scheduling Drug Design Cyber Security Codebreaking Circuit, Software, and System Fault Simulation
- 10. Quantum Computing I. It can execute any task very faster when compared to the classical computer. II.Exponential speedup. III.Classical algorithm calculations are also performed easily which is similar to the classical computer.
- 11. Quantum Computing • A quantum computer is not available at present Reason: The electron which is very much essential for the functioning of quantum computers is damaged as soon as it is affected by its environment. Research for this problem is in continuous progress which has no positive solution.
- 12. Quantum Computing Quantum Computing could provide a radical change in the way computation is performed. The advantages of Quantum Computing lie in the aspects of Quantum Mechanics that are peculiar to it, most notably entanglement. Classical Computers will be significantly larger than Quantum Computers for the foreseeable future.