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This repo is going to contain different resources that helped me learn quantum topics. I will also include my own personal way of explaining topics. Feel free to add or edit the content.

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🧠 Quantum Knowledge

Welcome to Quantum Knowledge — a curated guide to understanding quantum science, quantum computing, and related technologies. This repository gathers the best resources, explanations, and personal insights to help you learn quantum topics—whether you’re a beginner or brushing up on advanced concepts.

Feel free to contribute, edit, or expand any section!


📑 Table of Contents

  1. Quantum Vocab Cheat Sheet
  2. Linear Algebra
  3. Schrödinger's Equation
  4. Dirac Notation
  5. Quantum Physics
  6. Quantum Mechanics Basics
  7. Quantum Computing
  8. Useful Resources
  9. Quantum News Sources
  10. Quantum Sector Stocks to Watch
  11. How to Contribute

1. 📖 Quantum Vocab Cheat Sheet


2. 🧮 Linear Algebra

Linear algebra is the mathematical backbone of quantum computing. It helps describe quantum states, gates, and measurements.

Key Concepts

Concept Description Quantum Role
Vector Ordered list of numbers Represents quantum states (`
Matrix Grid of numbers Represents quantum gates
Inner Product Measures similarity Calculates probabilities
Tensor Product Combines vectors Builds multi-qubit systems
Eigenvalues/Eigenvectors Special matrix properties Describe measurements
Complex Numbers Real + imaginary parts Used in amplitudes
Unitary/Hermitian Matrices Preserve norms / real eigenvalues Define gates and observables

Recommended Resources


3. 🔄 Schrödinger's Equation

The Schrödinger equation describes how quantum states evolve over time.

Time-dependent form:iħ ∂Ψ(x, t)/∂t = Ĥ Ψ(x, t)

  • Ψ(x, t): Wavefunction (state of the system)
  • Ĥ: Hamiltonian operator (total energy)
  • ħ: Reduced Planck’s constant

Further Reading


4. 🧃 Dirac Notation

Dirac notation uses “kets” and “bras” to describe quantum states:

  • Ket (|ψ⟩): Represents a quantum state
  • Bra (⟨ψ|): Represents the conjugate transpose of a quantum state
  • Bra–ket (⟨ψ|ψ⟩): Inner product, describes probability amplitude

Resources


5. 🌌 Quantum Physics

Quantum physics explores the behavior of matter and energy at the smallest scales.

Learn More


6. 🧪 Quantum Mechanics Basics

Quantum mechanics describes the fundamental rules that govern particles at atomic and subatomic scales.

Core Principles

Principle Description
Superposition A particle can exist in multiple states at once until measured
Entanglement Two particles can be correlated so that measuring one affects the other instantly
Measurement Observing a quantum system collapses it into a definite state
Uncertainty Principle You can't precisely know both position and momentum: Δx·Δp ≥ ħ/2
Wavefunction A mathematical function that describes the quantum state of a system
Quantization Energy levels are discrete, not continuous

Famous Experiments

  • Double-slit experiment – Demonstrates wave-particle duality
  • Photoelectric effect – Shows light behaves as particles (photons)
  • Stern-Gerlach experiment – Reveals quantum spin and measurement
  • Bell’s inequality tests – Confirms quantum entanglement

Suggested Reading


7. 💻 Quantum Computing

Quantum computing applies quantum mechanics to computation.

Key Concepts

  • Qubits: Quantum bits in superposition
  • Quantum Gates: Operations on qubits
  • Quantum Circuits: Sequences of gates
  • Quantum Algorithms: Grover’s, Shor’s, Quantum Fourier Transform

Getting Started Resources


8. 🔗 Useful Resources


9. 📰 Quantum News Sources

Stay informed with these trusted quantum computing news platforms:

Top News & Research Platforms

Source Description Link
ScienceDaily – Quantum Computing Breakthroughs from labs and universities Link
MIT News – Quantum Computing Academic and research updates Link
The Quantum Insider Industry, startups, and ecosystem news Link
Quantum Computing Report Funding, partnerships, and technical milestones Link
Scientific American – Quantum Computing Accessible articles on quantum theory and tech Link

Financial & Market Insights

  • MSN Money & News – Quantum stock performance
  • CNBC & NBC Business – Corporate quantum developments
  • Quantum Daily – Industry analysis and investor news

10. 📈 Quantum Sector Stocks to Watch

Track companies leading the quantum computing revolution:

Company Ticker Focus Area Info Link
IBM IBM Quantum hardware/cloud Yahoo Finance
IonQ IONQ Quantum hardware Yahoo Finance
D-Wave Quantum QBTS Quantum annealing Yahoo Finance
Rigetti Computing RGTI Quantum hardware Yahoo Finance
Alphabet GOOG Quantum research Yahoo Finance
Microsoft MSFT Quantum software Yahoo Finance
Nvidia NVDA Quantum acceleration Yahoo Finance

Note: The quantum sector is emerging. Stocks can be volatile—do your own research and consult financial experts.


11. 🤝 How to Contribute

Want to help expand this repo?

  • Add new sections with explanations, links, and documentation
  • Update the Table of Contents
  • Follow the formatting style used in existing entries
  • Share your own analogies, diagrams, or cheat sheets
  • Submit a pull request with clear descriptions of your changes

Enjoy exploring quantum knowledge!

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This repo is going to contain different resources that helped me learn quantum topics. I will also include my own personal way of explaining topics. Feel free to add or edit the content.

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