Imperial College London
Portrait Picture

Professor Myungshik Kim

Faculty of Natural Sciences, Department of Physics

Chair in Theoretical Quantum Information Sciences
 
 
 
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Contact

 

+44 (0)20 7594 7754m.kim

 
 
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Location

 

1202Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhang:2019:10.1103/PhysRevLett.122.080401,
author = {Zhang, A and Xu, H and Xie, J and Zhang, H and Smith, BJ and Kim, MS and Zhang, L},
doi = {10.1103/PhysRevLett.122.080401},
journal = {Physical Review Letters},
title = {Experimental test of contextuality in quantum and classical systems},
url = {http://dx.doi.org/10.1103/PhysRevLett.122.080401},
volume = {122},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Contextuality is considered as an intrinsic signature of nonclassicality and a crucial resource for achieving unique advantages of quantum information processing. However, recently, there have been debates on whether classical fields may also demonstrate contextuality. Here, we experimentally configure a contextuality test for optical fields, adopting various definitions of measurement events, and analyze how the definitions affect the emergence of nonclassical correlations. The heralded single-photon state, which is a typical nonclassical light field, manifests contextuality in our setup; whereas contextuality for classical coherent fields strongly depends on the specific definition of measurement events, which is equivalent to filtering the nonclassical component of the input state. Our results highlight the importance of the definition of measurement events to demonstrate contextuality, and they link the contextual correlations to nonclassicality defined by quasiprobabilities in phase space.
AU  - Zhang,A
AU  - Xu,H
AU  - Xie,J
AU  - Zhang,H
AU  - Smith,BJ
AU  - Kim,MS
AU  - Zhang,L
DO  - 10.1103/PhysRevLett.122.080401
PY  - 2019///
SN  - 0031-9007
TI  - Experimental test of contextuality in quantum and classical systems
T2  - Physical Review Letters
UR  - http://dx.doi.org/10.1103/PhysRevLett.122.080401
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000459920000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/68530
VL  - 122
ER  -
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