In quantum mechanics, the quantum Cheshire cat is a quantum phenomena that suggests that a particle's physical properties can take a different trajectory from that of the particle itself. The name makes reference to the Cheshire Cat from Lewis Carroll's Alice's Adventures in Wonderland, a feline character which could disappear leaving only its grin behind. The effect was originally proposed by Yakir Aharonov, Daniel Rohrlich, Sandu Popescu and Paul Skrzypczyk in 2012.[1]
In classical physics, physical properties cannot be detached from the object associated to it. If a magnet follows a given trajectory in space and time, its magnetic moment follows it through the same trajectory. However in quantum mechanics, particles can be in a quantum superposition of more than one trajectory previous to measurement. The quantum Cheshire experiments suggests that previous to a measurement, a particle may take two paths, but the property of the particle, like the spin of a massive particle or the polarization of a light beam, travels only through one of the paths, while the particle takes the opposite path. The conclusion is only obtained from an analysis of weak measurements, which consist in interpreting the particle history previous to measurement by studying quantum systems in the presence of small disturbances.
Experimental demonstration of the quantum Cheshire cat have already been claimed in different systems, including photons[2] and neutrons.[3] The effect has been suggested as a probe to study properties of massive particles by detaching it from its magnetic moment in order to shield them from electromagnetic disturbances.[4][5] A dynamical quantum Cheshire cat has also been proposed as a counterfactual quantum communication protocol.[6]
^Aharonov, Yakir; Popescu, Sandu; Rohrlich, Daniel; Skrzypczyk, Paul (2013-11-07). "Quantum Cheshire Cats". New Journal of Physics. 15 (11): 113015. arXiv:1202.0631. Bibcode:2013NJPh...15k3015A. doi:10.1088/1367-2630/15/11/113015. ISSN 1367-2630.
In quantum mechanics, the quantumCheshirecat is a quantum phenomena that suggests that a particle's physical properties can take a different trajectory...
The CheshireCat (/ˈtʃɛʃər, -ɪər/ CHESH-ər, -eer) is a fictional cat popularised by Lewis Carroll in Alice's Adventures in Wonderland and known for its...
his group, Popescu discovered a number of quantum paradoxes, such as the quantumCheshirecat, and the quantum pigeonhole principle. They also introduced...
אהרונוב; born August 28, 1932) is an Israeli physicist specializing in quantum physics. He has been a Professor of Theoretical Physics and the James J...
This is a timeline of quantum computing. Stephen Wiesner invents conjugate coding (published in ACM SIGACT News 15(1): 78–88). James Park articulates...
from the age of three. During her schooling at Wilmslow High School in Cheshire, she became involved in amateur dramatics with the Tempo youth group in...
independence of radius is referred to as the CheshireCat principle, after the fading of Lewis Carroll's CheshireCat to just its smile. It is expected that...
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in particular the events of the webcomic's "Quantum Crook!" story arc. Sergei and Morag Lewis of Toothy Cat comparatively compared the series to fellow...
Othello (2016). Daniel Wroughton Craig was born on 2 March 1968 in Chester, Cheshire, as the son of an art teacher, Carol Olivia (née Williams), and Timothy...
earliest section of the wall begins to recede, disappearing like the CheshireCat but leaving its ever-expanding smile behind. By the time the growth front...
May 2022. Retrieved 13 May 2022. "Oscar winner Michelle Yeoh's time at Cheshire college recalled by friend". 26 March 2023. Archived from the original...
August 1938, Jung gave the presidential address, followed by a visit to Cheshire to stay with the Bailey family at Lawton Mere. In 1946, Jung agreed to...
Mike. "In a Mind-Bending New Paper, Physicists Give Schrodinger's Cat a Cheshire Grin". ScienceAlert. Retrieved 16 January 2021. Aharonov, Yakir; Rohrlich...
nucleon. Hollowed-out skyrmions form the basis for the chiral bag model (CheshireCat model) of the nucleon. The exact results for the duality between the...
Producer(s) Qimmit, a Clash of Two Truths 2010 Joelie Sanguya, Ole Gjerstad Quantum Hoops 2007 Rick Greenwald Rick Greenwald Queen, The 1968 Frank Simon Don...
Linear Accelerator Center. In 1973 he went to the Daresbury Laboratory in Cheshire and then to CERN in Switzerland from 1973 to 1975. He joined the Rutherford...
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Powerful Women list in 2023. Porat was born to a Jewish family in Sale, Cheshire, England, the daughter of Dr. Dan and Frieda Porat. Her mother was born...
includes the Equation Group, Flame, Duqu, and Flowershop (also known as 'CheshireCat'). In 2020, researcher Facundo Muñoz found evidence suggesting that Equation...
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