This document provides an overview of quantum computing, including its history, basic concepts, applications, advantages, difficulties, and future directions. It discusses how quantum computing originated in the 1980s with the goal of building a computer that is millions of times faster than classical computers and theoretically uses no energy. The basic concepts covered include quantum mechanics, superpositioning, qubits, quantum gates, and how quantum computers could perform calculations that are intractable on classical computers, such as factoring large numbers. The document also outlines some of the challenges facing quantum computing as well as potential future advances in the field.
2. LIST OF CONTENT
Introduction
Quantum & development of quantum theory
Basic concept of quantum computer
Applications
Advantages
Difficulties
Future work
Conclusion
3. INTRODUCTION
1980, development of a quantum computer
was started
1,000,000,000 times faster
Theoretically -no energy consumption
Feynman, 1982
Bit &Qubits
4. QUANTUM & DEVELOPMENT OF
QUANTUM THEORY
Quantum
smallest possible discrete unit of any physical
property
5. QUANTUM THEORY
Quantum mechanics
light's duality
James C. Maxwell(E M wave)
photoelectric effect
Schrödinger Equation
6. BASIC CONCEPT OF QUANTUM
COMPUTER
Superpositioning
overlap each other without interfering with each
other.
8. If this state is measured, we see only one or the
other state (live or dead) with some probability.
Quantum Turing machine
simple model
Express any quantum algorithm
10. Quantum teleportation
Transmission of q bit
quantum information processing
Quantum gates
act on qubits and quantum registers
change their states – rotating state vectors
11. Quantum register
more than one qubits
multi-dimensional
Quantum computing
circuit model
Input- quantum register-computation-result
12. Quantum computer working
not limited by the binary nature
qubit-1 or 0 – combination- any number –decimal
NMR
change the states
Difficult to hold in steady state
Separate atoms
2-5 atoms
16. ADVANTAGES
Much more powerful
Faster
Smaller
Improvements to science
Can improve on practical personal
electronics
17. DIFFICULTIES
Hard to control quantum particles
Lots of heat
Expensive
Difficult to build
Not enough is known about quantum mechanics
18. FUTURE WORK
Silicon Quantum Computer
It may become technology sooner than we
expect
New algorithms and communication
Maximum exploitation
Simulate other quantum systems.
19. CONCLUSION
very advance technology
very faster & powerful
Stage of infancy
Implementation is difficult