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''The Tao of Quantum Interrogation''
(2001). #
''Quantum Interrogation''
, (2006).
physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which ...
, interaction-free measurement is a type of measurement in quantum mechanics
In quantum physics, a measurement is the testing or manipulation of a physical system to yield a numerical result. The predictions that quantum physics makes are in general probabilistic. The mathematical tools for making predictions about what m ...
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
Quantum computing is a type of computation whose operations can harness the phenomena of quantum mechanics, such as superposition, interference, and entanglement. Devices that perform quantum computations are known as quantum computers. Though ...
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 ArrayBowden, Keith G, "Classical Computation can be Counterfactual", in Aspects I, Proc ANPA19, Cambridge 1997 (published May 1999), 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.
Counterfactual quantum communication
In 2012 the idea of counterfactual quantum communication has been proposed and demonstrated. Its first achievement was reported in 2017. According to contemporary conceptions of counterfactual quantum communication, information can thereby be exchanged without any physical particle / matter / energy being transferred between the parties, without quantum teleportation and without the information being the absence of a signal. In 2020 research suggested that this is based on some form of relation between the properties of modular angular momentum with massless current of modular angular momentum current crossing the "transmission channel" with their interpretation's explanation not being based on "spooky action at a distance
In physics, action at a distance is the concept that an object can be affected without being physically touched (as in mechanical contact) by another object. That is, it is the non-local interaction of objects that are separated in space.
Non- ...
" but properties of a particle being able to "travel '' locally'' through regions from which the particle itself is excluded". Available on arXiv undeCC BY 4.0
See also
* Counterfactual quantum computation *Counterfactual definiteness
In quantum mechanics, counterfactual definiteness (CFD) is the ability to speak "meaningfully" of the definiteness of the results of measurements that have not been performed (i.e., the ability to assume the existence of objects, and properties of ...
References
Bibliography
# # #Louis de Broglie
Louis Victor Pierre Raymond, 7th Duc de Broglie (, also , or ; 15 August 1892 – 19 March 1987) was a French physicist and aristocrat who made groundbreaking contributions to Old quantum theory, quantum theory. In his 1924 PhD thesis, he pos ...
, ''The Current Interpretation of Wave Mechanics'', (1964) Elsevier, Amsterdam. ''(Provides discussion of the Renninger experiment.)''
# ''(Provides a recent discussion of the Renninger experiment)''.
# ''(Section 4.1 reviews Renninger's experiment)''.
# Paul G. Kwiat,''The Tao of Quantum Interrogation''
(2001). #
Sean M. Carroll
Sean Michael Carroll (born October 5, 1966) is an American theoretical physicist and philosopher who specializes in quantum mechanics, gravity, and cosmology. He is (formerly) a research professor in the Walter Burke Institute for Theoretical ...
''Quantum Interrogation''
, (2006).
External links
* Quantum measurement Philosophy of physics Thought experiments in quantum mechanics {{quantum-stub