Observing the quantum Cheshire cat with a nondestructive weak measuring device

Observing counterintuitive quantum phenomena have provided physical perspectives on quantum mechanics as well as important evidence of its validity. One of such phenomena, namely the quantum Cheshire cat effect, illustrates the situation that the physical property is disembodied from its physical ca...

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Published in2019 Conference on Lasers and Electro-Optics (CLEO) pp. 1 - 2
Main Authors Kim, Yosep, Im, Dong-Gil, Kim, Yong-Su, Lee, Sang-Yun, Han, Sang-Wook, Moon, Sung, Kim, Yoon-Ho, Cho, Young-Wook
Format Conference Proceeding
LanguageEnglish
Published OSA 01.05.2019
Subjects
Cats
Optical polarization
Optical variables measurement
Photonics
Polarization
Probes
Quantum mechanics
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Abstract Observing counterintuitive quantum phenomena have provided physical perspectives on quantum mechanics as well as important evidence of its validity. One of such phenomena, namely the quantum Cheshire cat effect, illustrates the situation that the physical property is disembodied from its physical carrier. Here, we experimentally demonstrate the quantum Cheshire cat effect with a nondestructive weak measuring device. A pre- and post-selected photonic quantum system is subject to a weak nondestructive measuring device to probe where the photon and its polarization property can be found. Intriguingly, a quantum pointer after the weak quantum measurement indicates that the polarization can be found at the path the photon did not take.
AbstractList Observing counterintuitive quantum phenomena have provided physical perspectives on quantum mechanics as well as important evidence of its validity. One of such phenomena, namely the quantum Cheshire cat effect, illustrates the situation that the physical property is disembodied from its physical carrier. Here, we experimentally demonstrate the quantum Cheshire cat effect with a nondestructive weak measuring device. A pre- and post-selected photonic quantum system is subject to a weak nondestructive measuring device to probe where the photon and its polarization property can be found. Intriguingly, a quantum pointer after the weak quantum measurement indicates that the polarization can be found at the path the photon did not take.
Author Cho, Young-Wook
Moon, Sung
Lee, Sang-Yun
Kim, Yong-Su
Im, Dong-Gil
Kim, Yoon-Ho
Kim, Yosep
Han, Sang-Wook
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Snippet Observing counterintuitive quantum phenomena have provided physical perspectives on quantum mechanics as well as important evidence of its validity. One of...
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SubjectTerms Cats
Optical polarization
Optical variables measurement
Photonics
Polarization
Probes
Quantum mechanics
Title Observing the quantum Cheshire cat with a nondestructive weak measuring device
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