In physics, interaction-free measurement is a type of measurement in quantum mechanics that detects the position, presence, or state of an object without an interaction occurring between it and the measuring device. Examples include the Renninger negative-result experiment, the Elitzur–Vaidman bomb-testing problem, and certain double-cavity optical systems, such as Hardy's paradox. Initially proposed as thought experiments, interaction-free measurements have been experimentally demonstrated in various configurations.
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| - Wechselwirkungsfreie Quantenmessung (de)
- Contrafactualité (physique) (fr)
- Interaction-free measurement (en)
- Medição de livre interação (pt)
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| - In der makroskopischen und „traditionellen“ mikroskopischen Welt verursacht jede Messung eine Störung des beobachteten Zustands. Jedoch erlauben Quanteneffekte in der mikroskopischen Welt der Quanten, Objekte erkennen zu können, ohne diese auch nur einem einzigen Lichtquant aussetzen zu müssen. Dadurch wird das zu messende Objekt nicht verändert. Dieser Vorgang wird als wechselwirkungsfreie Quantenmessung bezeichnet. Sie wurde zuerst 1993 in einem Gedankenexperiment von Avshalom Elitzur und vorgeschlagen und experimentell 1994 von einer Gruppe um Anton Zeilinger erstmals demonstriert. (de)
- Selon la mécanique quantique, des évènements contrefactuels, qui auraient pu se produire mais qui ne se sont pas produits, influent sur les résultats de l'expérience. Ce phénomène a été choisi par le magazine New Scientist comme une des « sept merveilles du monde quantique ». (fr)
- Na física, a medição de livre interação é um tipo de medição na mecânica quântica que detecta a posição ou o estado de um objeto sem que ocorra uma interação entre ele e o dispositivo de medição. O termo foi introduzido por Elitzur e Vaidman, a fim de permitir encontrar objetos infinitamente frágeis sem destruí-los.. Os exemplos incluem o , o problema de teste de bombas Elitzur-Vaidman e certos sistemas óticos de dupla cavidade, como o paradoxo de Hardy. (pt)
- In physics, interaction-free measurement is a type of measurement in quantum mechanics that detects the position, presence, or state of an object without an interaction occurring between it and the measuring device. Examples include the Renninger negative-result experiment, the Elitzur–Vaidman bomb-testing problem, and certain double-cavity optical systems, such as Hardy's paradox. Initially proposed as thought experiments, interaction-free measurements have been experimentally demonstrated in various configurations. (en)
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| - In der makroskopischen und „traditionellen“ mikroskopischen Welt verursacht jede Messung eine Störung des beobachteten Zustands. Jedoch erlauben Quanteneffekte in der mikroskopischen Welt der Quanten, Objekte erkennen zu können, ohne diese auch nur einem einzigen Lichtquant aussetzen zu müssen. Dadurch wird das zu messende Objekt nicht verändert. Dieser Vorgang wird als wechselwirkungsfreie Quantenmessung bezeichnet. Sie wurde zuerst 1993 in einem Gedankenexperiment von Avshalom Elitzur und vorgeschlagen und experimentell 1994 von einer Gruppe um Anton Zeilinger erstmals demonstriert. (de)
- In physics, interaction-free measurement is a type of measurement in quantum mechanics that detects the position, presence, or state of an object without an interaction occurring between it and the measuring device. Examples include the Renninger negative-result experiment, the Elitzur–Vaidman bomb-testing problem, and certain double-cavity optical systems, such as Hardy's paradox. In Quantum Computation such measurements are referred to as Counterfactual Quantum Computation, an idea introduced by physicists Graeme Mitchinson and Richard Jozsa. Examples include Keith Bowden's Counterfactual Mirror Array describing a digital computer that could be counterfactually interrogated to calculate whether a light beam would fail to pass through a maze. Initially proposed as thought experiments, interaction-free measurements have been experimentally demonstrated in various configurations. Interaction-free measurements have also been proposed as a way to reduce sample damage in electron microscopy. (en)
- Selon la mécanique quantique, des évènements contrefactuels, qui auraient pu se produire mais qui ne se sont pas produits, influent sur les résultats de l'expérience. Ce phénomène a été choisi par le magazine New Scientist comme une des « sept merveilles du monde quantique ». (fr)
- Na física, a medição de livre interação é um tipo de medição na mecânica quântica que detecta a posição ou o estado de um objeto sem que ocorra uma interação entre ele e o dispositivo de medição. O termo foi introduzido por Elitzur e Vaidman, a fim de permitir encontrar objetos infinitamente frágeis sem destruí-los.. Os exemplos incluem o , o problema de teste de bombas Elitzur-Vaidman e certos sistemas óticos de dupla cavidade, como o paradoxo de Hardy. (pt)
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