Concepts
Mapping the philosophical and experimental realms of Q Paradox.
Theoretical
What is Theoretical?
The heart of abstract reasoning in physics. Foundations, philosophy, and mathematics.
Go to →Theoretical Foundations
From logical axioms to modern field theories.
Go to →Quantum Toolkit
Operators, Hilbert spaces, Dirac notation, postulates.
Go to →Quantum Deep Dive
Bell inequalities, EPR paradox, Many Worlds, and decoherence.
Go to →Quantum Experiments
Interpretations through real-world results.
Go to →Classical Mechanics
Newtonian, Lagrangian, and Hamiltonian mechanics.
Go to →Electromagnetism
Maxwell’s equations, gauge symmetry, and fields.
Go to →Relativity
Special and general relativity. Space, time, and curvature.
Go to →Quantum Mechanics
Core formalism, uncertainty, entanglement.
Go to →Quantum Field Theory
Quantizing fields, interactions, and Feynman diagrams.
Go to →Statistical Mechanics
Entropy, temperature, and emergent macroscopic order.
Go to →Cosmology
Big Bang, expansion, dark matter, dark energy.
Go to →Beyond the Textbook
Topological phases, Berry phase, and quantum geometry.
Go to →Decoherence
Environment-induced transition from quantum to classical.
Go to →Wigner’s Friend
Observer-dependent reality in quantum mechanics.
Go to →QBism
Quantum Bayesianism: physics as subjective probability.
Go to →Computational
Quantum Simulators
Qiskit, Cirq, and libraries for simulating quantum systems.
Go to →Numerical Methods
ODEs, PDEs, matrix diagonalization and time evolution.
Go to →Quantum Algorithms
Shor’s algorithm, Grover’s, variational methods, and more.
Go to →Tensor Networks
Computational compression for quantum many-body systems.
Go to →Data-Driven Physics
Physics-informed ML, neural ODEs, symbolic regression.
Go to →Computational Cosmology
Simulations of inflation, structure formation, and CMB.
Go to →Monte Carlo Methods
Sampling-based computation for integrals and uncertainty.
Go to →Quantum Complexity
BQP, QMA, and limits of computational quantum power.
Go to →Experiments
Double Slit
Wave-particle duality tested with single photons.
Go to →Photon Entanglement
Bell test experiments and the CHSH inequality.
Go to →Quantum Eraser
Recovering interference by erasing which-path info.
Go to →Weak Measurements
Probing quantum systems with minimal disturbance.
Go to →2-Level Rabi Story
Coherent oscillations in two-level quantum systems.
Go to →Interference Visibility
Fringe contrast as a measure of quantum coherence.
Go to →Monte Carlo Intuition
Randomized simulation of measurement outcomes.
Go to →Light as a Messenger
Photons carrying quantum info across setups.
Go to →Rydberg Atoms
Huge atoms with dipole blockade for entanglement.
Go to →Ultracold Gases
Condensed atoms for collective quantum behaviors.
Go to →Words in the Void
"The universe is not only stranger than we imagine, it is stranger than we can imagine."
– J.B.S. Haldane
"What we observe is not nature itself, but nature exposed to our method of questioning."
– Heisenberg
"Reality is merely an illusion, albeit a very persistent one."
– Einstein
"Time is an illusion. Lunchtime doubly so."
– Douglas Adams