superposition
A principle of quantum mechanics stating that a quantum system can exist in multiple states simultaneously until it is measured.
Before measurement, a particle in superposition isn't 'either A or B' but rather 'a combination of A and B' at the same time. The act of measurement 'collapses' the superposition into a single definite state.
Word relationships
- coexistence of states: A descriptive phrase, 'superposition' is the formal scientific term.
- definite state: A single, unambiguous state, as opposed to a combination of states.
Word family
- superpose (verb): to place one thing on or over another, especially so that they coincide
Collocations
- quantum superposition
- state of superposition
- superposition principle
Example sentences
- "According to the principle of superposition, an electron can be in multiple locations at once until an observation forces it to 'choose' one." Explaining a fundamental quantum concept.
- "Schrödinger's cat thought experiment famously illustrates superposition, where the cat is simultaneously alive and dead until the box is opened." Illustrating with a famous thought experiment.
- "Quantum computers leverage superposition to perform calculations on many possibilities simultaneously, offering potential speedups over classical computers." Discussing its application in technology.
Memory hook
Think of 'SUPER-imposed' images: multiple images existing on top of each other. A quantum particle is in a 'superposition' of states, like all those images at once. SUPER-imposed states
When not to use
Do not use 'superposition' to describe simply having multiple options or choices; it refers to a specific quantum state where all possibilities genuinely exist concurrently.
Fun facts
- The famous thought experiment of Schrödinger's Cat was designed to highlight the counter-intuitive nature of superposition when scaled up to macroscopic objects.
- Superposition is one of the foundational principles that quantum computing exploits to achieve its computational power.
Related words
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