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# Quantum Computing

**Quantum computing** is a rapidly evolving field of computation that harnesses quantum mechanical phenomena to process information in fundamentally new ways.

## Core Principles

Unlike classical computers that use bits (0 or 1), quantum computers use **qubits**, which can exist in a state of superposition:

• *Superposition*: Qubits can represent multiple states simultaneously
• *Entanglement*: Particles become correlated regardless of distance
• *Interference*: Quantum states can amplify correct answers and cancel wrong ones

## Historical Development

The theoretical foundations were laid in the 1980s by physicists including:

1. Richard Feynman
2. Yuri Manin
3. David Deutsch

> "Nature isn't classical, dammit, and if you want to make a simulation of nature, you'd better make it quantum mechanical." — Richard Feynman

## Modern Applications

Quantum systems show promise in:
- Cryptography and secure communications
- Drug discovery and molecular simulation
- Optimization problems in logistics
- Machine learning acceleration

## References

1. Nielsen, M. A. & Chuang, I. L. (2010). *Quantum Computation and Quantum Information*. Cambridge University Press.
2. Preskill, J. (2018). *Quantum Computing in the NISQ era and beyond*. Quantum, 2, 79.

`Last verified: 2025-03-15`

Dr. Elena K. Today, 14:32

Updated references section and added NISQ era context

Dr. Elena K. Yesterday, 09:15

Expanded core principles with entanglement details

Auto-save 3 days ago, 18:44

Draft checkpoint before major revision

Prof. Marcus T. 1 week ago, 11:20

Peer review: adjusted technical terminology

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