Library
Find a concept by behavior.
Open QuantumPlain simulator surfaces.
Wave Function
Gaussian packet motion, probability density, uncertainty, and observation sampling.
Double Slit
Interference bands, slit geometry, diffraction envelope, and detector hits.
Particle in a Box
Standing waves, nodes, quantized energy, and position sampling inside boundaries.
Quantum Tunneling
Barrier height, width, transmission probability, and evanescent wave shape.
Hydrogen Orbital
3D orbital probability clouds, nodal structure, and radial/angular basis states.
Bloch Sphere
Qubit direction, phase, Pauli expectations, and measurement probabilities.
Circuit Builder
Gate action, state-vector evolution, circuit readout, and exportable gate sequences.
Entanglement
Bell states, joint measurement probabilities, and two-qubit correlations.
NV Center
Spin transition lines, Zeeman shifts, strain splitting, and magnetic readout.
Hilbert Space
Basis size, amplitude vectors, state expansion, and high-dimensional structure.
Tensor Network
Compressed many-qubit structure, contractions, and error-correction scale.
BB84
Basis choices, sifted keys, disturbance, and error-rate security checks.
Grover Search
Oracle marking, diffusion, amplitude amplification, and success probability.
Circuit Research Lab
Longer circuit experiments, state inspection, and export-ready workflow.
Quantum Chemistry Lab
Orbital basis exploration, chemistry states, and VQE-style intuition.
Protein and Nucleic Acid Lab
Molecular state structure for biological and chemical systems.
Molecular Dynamics Lab
Bound states, lattice motion, and molecular-scale dynamics.
Materials and Lattice Lab
Lattice structure, confinement, and materials-scale quantum behavior.
Quantum Error Correction Lab
Logical state structure, syndrome intuition, and surface-code workflow.
Cryptography Lab
Key exchange, basis audit, and disturbance-driven security checks.
Neuron Electrophysiology Lab
Signal behavior and observation workflow for future quantum-bio experiments.
Jump from simulator behavior back into lessons.
Superposition
The particle is everywhere at once. Superposition shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Wave Function
ψ(x,t) — the math of possibility. The Wave Function shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Measurement
Looking is what makes things real. Measurement shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Double Slit
One particle going through two slits. The Double Slit shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Wave-Particle Duality
Light is both — and so are you. Wave-Particle Duality shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Uncertainty
Some things can't be known at the same time. Uncertainty shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Tunneling
Particles walk through walls. Quantum Tunneling shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Schrödinger Equation
The equation that runs the universe. The Schrödinger Equation shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Stationary States
Standing waves in a quantum world. Stationary States shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Particle in a Box
What happens when you trap a wave. The Particle in a Box shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Hydrogen
How an electron orbits without orbiting. Hydrogen shows that quantum objects are described by waves of possibility until measurement selects an outcome. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Spin
Particles spin without spinning. Spin explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Stern-Gerlach Experiment
The experiment that found spin. The Stern-Gerlach Experiment explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Pauli Exclusion
Why every atom has a shape. Pauli Exclusion explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Multi-Electron Atoms
When electrons have to share a house. Multi-Electron Atoms explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Molecular Orbitals
Two atoms, one shared cloud. Molecular Orbitals explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Chemical Bonding
Why atoms stick together. Chemical Bonding explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Spectroscopy
How light tells you what something is. Spectroscopy explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Lasers
Coherent light, plain and simple. Lasers explains how quantized states give atoms and molecules their shape, spectra, and chemical behavior. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Bits and Qubits
Beyond zero and one. Bits and Qubits treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Bloch Sphere
Every quantum state is a point on a sphere. The Bloch Sphere treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Single-Qubit Gates
Rotations of the Bloch sphere. Single-Qubit Gates treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The CNOT Gate
When two qubits become one. The CNOT Gate treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Entanglement
Two particles, one shared destiny. Entanglement treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Bell States
Einstein was wrong about this one. Bell States treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Teleportation
Quantum information at any distance. Quantum Teleportation treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The No-Cloning Theorem
You can't copy a quantum state. The No-Cloning Theorem treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
POVMs
Measurement isn't always yes-or-no. POVMs treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Density Matrices
Quantum states with imperfect information. Density Matrices treats quantum states as information that can be rotated, correlated, measured, and protected from careless copying. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Circuits
Reading the circuit diagram. Quantum Circuits turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Universal Quantum Gates
All quantum logic from a small set. Universal Quantum Gates turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Deutsch-Jozsa
The first quantum advantage. Deutsch-Jozsa turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Grover Search
Searching faster than possible. Grover Search turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Fourier Transform
The quantum Fourier transform. Quantum Fourier Transform turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Shor's Algorithm
How quantum computers break encryption. Shor's Algorithm turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Variational Quantum Eigensolver
Solving chemistry with quantum hardware. Variational Quantum Eigensolver turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
QAOA
Approximating impossible optimizations. QAOA turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Machine Learning
When neural networks meet qubits. Quantum Machine Learning turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
NISQ Computing
What today's quantum computers can do. NISQ Computing turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Fault Tolerance
Building reliability from unreliability. Fault Tolerance turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Surface Codes
The error-correcting code that might win. Surface Codes turns quantum evolution into a computational operation with strengths and limits that classical circuits do not share. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Superconducting Qubits
Qubits made of supercooled metal. Superconducting Qubits connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Trapped Ions
Qubits made of single floating atoms. Trapped Ions connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Photonic Qubits
Qubits made of light. Photonic Qubits connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Topological Qubits
The qubit that's intrinsically protected. Topological Qubits connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Neutral Atoms
Qubits made of atoms held by lasers. Neutral Atoms connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Spin Qubits
Qubits inside silicon — the same stuff as your computer. Spin Qubits connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Decoherence
Why quantum computers have to be cold. Decoherence connects the abstract qubit to physical devices that must fight noise, heat, and unwanted coupling. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Atomic Clocks
The most accurate clocks in existence. Atomic Clocks uses fragile quantum phase as an instrument for measuring time, fields, motion, or gravity with extreme precision. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
NV Centers
A defect in diamond that can sense a single electron. NV Centers uses fragile quantum phase as an instrument for measuring time, fields, motion, or gravity with extreme precision. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Gravity Sensing
Detecting the pull of a single grain of rice. Quantum Gravity Sensing uses fragile quantum phase as an instrument for measuring time, fields, motion, or gravity with extreme precision. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
LIGO
How LIGO detected colliding black holes. LIGO uses fragile quantum phase as an instrument for measuring time, fields, motion, or gravity with extreme precision. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Imaging
Photographing things with light that never touched them. Quantum Imaging uses fragile quantum phase as an instrument for measuring time, fields, motion, or gravity with extreme precision. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
BB84
BB84 — the original quantum-secure key exchange. BB84 shows how security can rest on physical laws instead of computational inconvenience alone. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
E91
Bell-state cryptography. E91 shows how security can rest on physical laws instead of computational inconvenience alone. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Random Number Generation
True randomness from a quantum coin flip. Quantum Random Number Generation shows how security can rest on physical laws instead of computational inconvenience alone. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Quantum Vacuum
Empty space is full of activity. The Quantum Vacuum replaces particles as tiny objects with fields whose excitations are the things we detect. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Quantum Electrodynamics
How light and matter actually interact. Quantum Electrodynamics replaces particles as tiny objects with fields whose excitations are the things we detect. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Feynman Diagrams
Drawing the impossible. Feynman Diagrams replaces particles as tiny objects with fields whose excitations are the things we detect. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Path Integrals
All paths at once. Path Integrals replaces particles as tiny objects with fields whose excitations are the things we detect. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
The Standard Model
What the universe is made of, plain and simple. The Standard Model replaces particles as tiny objects with fields whose excitations are the things we detect. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.
Pilot Wave Theory
What if particles really do have positions?. Pilot Wave Theory asks what quantum theory is telling us about knowledge, measurement, and reality itself. The lesson starts from observation and then names the physics behind what the simulation or thought experiment reveals.