An introduction to Quantum Computing...

1. Quantum Computing:
The Next Computing
Revolution
Explore the fascinating world of quantum computing. Discover its
potential to revolutionize various industries. Learn about its basic
principles, applications, and future.
by MD TASNIN TANVIR
Lecturer in CSE, UITS
BSc in CSE KUET
MSc in ICT BUET

2. What is Quantum Computing?
Quantum computing utilizes quantum mechanics principles. It performs computations that are impossible for classical
computers. Superposition and entanglement are key to its power.
Superposition
Qubits exist in multiple states simultaneously. This allows
them to explore many possibilities at once.
Entanglement
Qubits become linked, even across vast distances. This
interconnection enables complex calculations.

3. Qubits vs. Bits: A Fundamental Difference
Classical computers use bits, representing 0 or 1. Quantum computers use qubits.
1 Bits
Represent information as 0 or 1.
2 Qubits
Represent information as 0, 1, or
both simultaneously.
3 Exponential Power
Qubits can perform complex
calculations using superposition
and entanglement.

4. Quantum Supremacy: A
Milestone Achieved?
Quantum supremacy is achieved when a quantum computer solves a
problem. The problem is impossible for even the most powerful classical
computers.
Algorithm Design
Developing quantum algorithms.
Hardware Build
Constructing quantum hardware.
Problem Solving
Solving complex problems beyond classical computers.

5. Quantum Algorithms:
Potential Applications
Quantum algorithms offer speedups for specific problems. Shor's
algorithm factors large numbers quickly. Grover's algorithm searches
databases efficiently.
Cryptography
Breaking existing
encryption and
creating new
methods.
Drug Discovery
Simulating molecules
and designing new
drugs.
Finance
Optimizing
investment strategies
and managing risk.

6. Challenges in Quantum
Computing Development
Building and maintaining qubits is extremely difficult. Qubits are sensitive to
noise and decoherence. Error correction is essential but complex.
1 Decoherence
Maintaining qubit stability.
2 Error Correction
Mitigating quantum errors.
3 Scalability
Increasing the number of qubits.

7. The Future of Quantum
Computing: Predictions
Quantum computing is rapidly evolving. Expect breakthroughs in
hardware and algorithms. Quantum computers will likely coexist with
classical computers.
Hybrid Systems
Integrating quantum and
classical computing.
Quantum Cloud
Accessing quantum
computers via the cloud.
Industry Impact
Transforming healthcare, finance, and materials science.

8. Q&A: Exploring the Quantum Realm Together
Quantum computing holds immense promise. It also presents significant challenges. Let's discuss your questions and
explore this exciting field.
1 Discovery
2 Innovation
3 Exploration