Quantum physics
Quantum Superposition
The principle that a quantum system can exist in a combination of states at once until it is measured, when a single outcome is realised. It is the heart of quantum weirdness and of quantum computing, and it is the reason atomic transitions and particle interactions must be described in probabilities rather than certainties.
Highlights
- ›A system in many states at once — until measured
Related physics & astronomy
Across fundamental physics
Knowledge connections
- Associated withThe Wave Function
- Associated withThe Wave Function
- Associated withQuantum Entanglement
- Associated withQuantum Decoherence
- Associated withQuantum Entanglement
- Associated withWave–Particle Duality
- Associated withQuantum Decoherence
- Associated withNeutrino Oscillation
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.