TY - JOUR
T1 - Quantum duality
T2 - A source point of view
AU - Qian, X. F.
AU - Agarwal, G. S.
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2020/2
Y1 - 2020/2
N2 - Usual quantitative studies of quantum wave-particle duality employ Young's double-slit context and treat the slits approximately as ideal point sources, i.e., neglecting practical nonperfections such as slit finite width, roughness, etc. Here, we investigate the duality of a photon that is generated from genuine point sources, i.e., a pair of nonlocally entangled two-level atoms. This justifies a free-space exact spherical wave treatment. More importantly, it allows for a systematic quantitative analysis of the source effects on a quantum particle's duality property. Surprisingly, duality is found to be a conditional phenomenon depending on the photon's atomic source. It can be tuned maximum, medium, and even minimum (completely absent) by the atomic state purity through an exact Pythagorean duality source relation. Our analysis shows another way of investigating quantum duality by accounting how the single quantum object is created. The results can be tested in various practical physical systems.
AB - Usual quantitative studies of quantum wave-particle duality employ Young's double-slit context and treat the slits approximately as ideal point sources, i.e., neglecting practical nonperfections such as slit finite width, roughness, etc. Here, we investigate the duality of a photon that is generated from genuine point sources, i.e., a pair of nonlocally entangled two-level atoms. This justifies a free-space exact spherical wave treatment. More importantly, it allows for a systematic quantitative analysis of the source effects on a quantum particle's duality property. Surprisingly, duality is found to be a conditional phenomenon depending on the photon's atomic source. It can be tuned maximum, medium, and even minimum (completely absent) by the atomic state purity through an exact Pythagorean duality source relation. Our analysis shows another way of investigating quantum duality by accounting how the single quantum object is created. The results can be tested in various practical physical systems.
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U2 - 10.1103/PhysRevResearch.2.012031
DO - 10.1103/PhysRevResearch.2.012031
M3 - Article
AN - SCOPUS:85098835685
SN - 2643-1564
VL - 2
JO - Physical Review Research
JF - Physical Review Research
IS - 1
M1 - 012031
ER -