pointer state
≈ 1 min read
Names in other languages
- PortuguêsEstado de ponteiro
- eomontrila stato
- Englishpointer state
- 日本語ポインター状態
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
In quantum Darwinism and similar theories, pointer states are quantum states, sometimes of a measuring apparatus, if present, that are less perturbed by decoherence than other states, and are the quantum equivalents of the classical states of the system after decoherence has occurred through interaction with the environment. 'Pointer' refers to the reading of a recording or measuring device, which in old analog versions would often have a gauge or pointer display.
In quantum Darwinism and similar theories, pointer states are quantum states, sometimes of a measuring apparatus, if present, that are less perturbed by decoherence than other states, and are the quantum equivalents of the classical states of the system after decoherence has occurred through interaction with the environment. 'Pointer' refers to the reading of a recording or measuring device, which in old analog versions would often have a gauge or pointer display.
Text derived from https://en.wikipedia.org/w/index.php?oldid=1346513962 under CC BY-SA 4.0; modifications have been made.