# Quantum physics

## Notes

- This is the reason why the word observer is cursed. Because it leads to people to conclude consciousness and other wrong concepts are associated with the results. All that happens is a measurement, an interaction or interference, so no, you dont need a conscious observer, because the act of measurement is what interacts with the wave function, it happens irregardless of being made by a dog, a tardigrade or a computer, because anything that measures the wave function is interfering with it.
- If you have just one half of an entangled pair, it is impossible to know if the other has been measured, even if you measure your half.
- Quantum teleportation requires entanglement, but the communication of state (horribly misnamed “teleportation”) takes place by ordinary means, typically a laser. The communication doesn’t exceed the speed of light. The idea that quantum state transfer (“teleportation”) takes place at FTL speeds is just a misconception.

## Links

- Uncertainty principle? It's not about quantum.
- What is a Quantum Field?!?
- Scott Aaronson on Computational Complexity Theory and Quantum Computers
- Quantum Katas - Programming exercises for learning Q# and quantum computing.
- Categorical quantum mechanics - Study of quantum foundations and quantum information using paradigms from mathematics and computer science, notably monoidal category theory.
- Sean Carroll's Mindscape: Finding Gravity Within Quantum Mechanics (2019)
- Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime (2019)
- How quantum teleportation works (Twitter)
- Can you explain me quantum decoherence in simple language?
- Knots and Quantum Theory (2011)
- M-Labs - Open tools for open physics.
- Dirac lectures on quantum physics
- Quick Guide to Quantum Physics: 24 Phenomenons Explained (2016)
- The Notorious Delayed-Choice Quantum Eraser (2019)
- Double slits with single atoms (2020) (HN)
- Wave Function Collapse Explained (2020)
- Why should we suppose a single underlying principle that explains both quantum mechanics and gravity? (2020)
- Quantum mechanics textbooks/resources (2020)
- What did Schrodinger's Cat experiment prove? (2013) (HN)
- Quantum Mechanical View of Reality - Richard Feynman
- Scott Aaronson - Schrödinger's Cat and Quantum Necromancy (2020)
- Q: What if the particles in the double slit experiment were conscious? Could you ask them which slit they went through afterwards? (2020)
- Research on Topological quantum matter (2020)
- Why does entanglement work in the sense that it does not break any rules of relativity in regards to information transfer? (2020)
- Visualization of Quantum Physics (Quantum Mechanics)
- Kindergarten Quantum Mechanics (2005) (HN)
- Brief Overview of Quantum Mechanics (SEP)
- A Short Note on the Double-Slit Experiment and Other Quantum Interference Effects in the Wolfram Model (2020)
- Schrödinger’s Cat When Nobody Is Looking (2020)
- Quantum Mechanics For Mathematicians (video playlist) (2020)
- Quantum Tunnel Shows Particles Can Break the Speed of Light (2020) (HN)
- Beyond Weird: Decoherence, Quantum Weirdness, and Schrödinger's Cat (2020)
- A Stochastic Derivation of Classical and Quantum Mechanics (2020)
- Quantum nanodiamonds may help detect disease earlier (2020) (HN)
- How do we know there is any distinction between particles and waves? (2020)
- Is the Schrödinger Equation True? (2021) (HN)
- Basics of Quantum Mechanics Summarized
- The Quantum Physics Sequence (2008)
- Is light fundamentally a wave or a particle? (2021) (HN)
- Theory of Strongly Correlated Quantum Matter
- Don't fall for quantum hype (2021)
- Teaching Myself Quantum Mechanics (2021)
- Closed Loophole Confirms the Unreality of the Quantum World (2018) (HN)
- Quantum Electrodynamics and Feynman Diagrams (2021)
- Hypernuclei (2021)
- Quantum mechanics isn’t weird, we’re just too big (2021) (HN)
- Quantum Mischief Rewrites the Laws of Cause and Effect (2021)
- How To Read Feynman Diagrams (2021)
- Quantum nonlocality
- Quantum Hamiltonian Explained
- Reflection of a Quantum particle from a mirror that is only three atomic layers thick
- Quantum field theory books (2021)
- What's an equation in quantum physics that fascinates you the most? (2021)
- Best online course for Introductory Quantum Mechanics? (2021)
- Quantum Double-Slit Experiment Offers Hope for Earth-Size Telescope (2021)
- What did Einstein mean by “spooky action at a distance”? (2021) (HN)
- Quantum Leaps, Long Assumed to Be Instantaneous, Take Time (2021)
- Is there a Wave Function of the Universe?
- In which ways does quantum mechanics differ from traditional physics? What did you learn that felt 'weird'? (2021)
- Why does measuring a quantum object change it? (2021)
- What Is Real? by Adam Becker (2018) - The Unfinished Quest for the Meaning of Quantum Physics.
- The quantum source of space-time (2015) (Reddit)
- Comments on the Sachdev-Ye-Kitaev model (2016)
- Conservation and scrambling of quantum information (2021) (Reddit)
- QMsolve - Module for solving and visualizing the Schrödinger equation.
- What is the most everyday problem QFT can solve? (2021)
- AI Designs Quantum Physics Experiments Beyond What Any Human Has Conceived (2021)
- Observation of Time-Crystalline Eigenstate Order on a Quantum Processor (2021)
- What are time crystals? (2021)
- Why can't we know the position of a particle if we know its velocity?
- Quantum Mechanics of Gravitational Waves (2021) (HN)
- What is Wave Particle Duality? (2020)
- The Golden Age of Quantum Physics (1927) (HN)
- What is the difference between quantum and thermal correlations? (2021)
- Lectures on quantum supreme matter (2021)
- An ultra-precise clock shows how to link the quantum world with gravity (2021) (HN)
- Beyond Quantum Mechanics and Relativity (2021)
- Brian Greene: Quantum Gravity, The Big Bang, Aliens, Death, and Meaning (2021)
- Five Starter Pieces: Quantum Information Science via Semi-definite Programs (2021) (Code)
- Entanglement between superconducting qubits and a tardigrade (2021) (Tweet)
- Quantum theory based on real numbers can be experimentally falsified (2021) (HN)
- Video recording true single-photon double-slit interference (2016) (Reddit)
- Quantum particles feel the influence of gravitational fields they never touch (HN)
- Why Quantum Mechanics? (2022) (HN)
- What Is a Quantum Field Theory? (2022)
- Quantum Coarse-Graining: An Information-Theoretic Approach to Thermodynamics (2016) (Web)
- Wave function collapse explained (2022)
- My Quantum Leap (2022)
- A wave function does not collapse upon detection? (HN)
- It’s time to admit quantum theory has reached a dead end (2022) (HN)
- Why Quantum Mechanics Is An Inconsistent Theory | Roger Penrose (2022)
- Puzzling Quantum Scenario Appears Not to Conserve Energy (2022) (HN) (Reddit)
- Yakir Aharonov - Wikipedia - Israeli physicist specializing in quantum physics.